FIRMLOK STRUCTURAL BEAMS - Lysaght Professionals · FIRMLOK ® STRUCTURAL BEAMS 1.3 FIRMLOK® QUICK...

FIRMLOK® STRUCTURAL BEAMSQUICK SELECTION GUIDE FOR HOME IMPROVEMENT PATIOS, CARPORTS AND AWNINGS

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LYSAGHT FIRMLOK® STRUCTURAL BEAMS

1.1 FIRMLOK® STRUCTURAL BEAMS FIRMLOK® structural beams consist of two interlocking C-sections. They are light, strong and universal in their application. A range of connection types and accessories allows you to erect your project with ease.

FIRMLOK® is uniform in quality, it doesn’t warp or split and it doesn’t need painting. Consistent straightness simplifies alignment. LYSAGHT FIRMLOK® beams are available in three sizes 100mm, 150mm and 200mm deep depending on your application and aesthetic preference.

This publication demonstrates FIRMLOK® in its application as roofing members, combined with our range of roof sheeting. Typical applications include patios, carports and awnings.

MATERIAL SPECIFICATIONS

Next generation ZINCALUME® aluminium/zinc/magnesium alloy coated steel complies with AS 1397:2011 G550, AM125 (550 MPa minimum yield stress, 125g/m2 minimum coating mass).

COLORBOND® is pre-painted steel for exterior roofing and walling. It is the most widely used. The painting complies with AS/NZS 2728:2013 and the steel base is an aluminium/zinc alloy-coated steel complying with AS 1397:2011. Minimum yield strengths are G550 (550 MPa). Minimum coating mass is AM100 (100g/m2).

The base metal thicknesses are 0.55, 0.75 and 1.00mm.

COLOURS

FIRMLOK® beams are available in ZINCALUME® steel and a range of COLORBOND® steel colours.

The FIRMLOK® universal brackets are also available powder coated to match the COLORBOND® steel colours.

LENGTHS

Stock lengths may vary from state to state. Please enquire at your local distribution outlet for available lengths.

Alternatively, FIRMLOK® may be ordered to length (maximum length at 12000mm). Extended lead times may apply.

1.0 General Data 2

1.1 FIRMLOK® Structural Beams 2

1.2 FIRMLOK® Components 3

1.3 FIRMLOK® Quick Selection Tables 4

1.4 Design conditions and notes for the tables 5

PART A

2.0 Cladding 6

2.1 Cladding Selection 6

2.2 Cladding Types and Recommended Fixing Patterns for Home Improvement Applications 7

2.3 Cladding Fasteners 7

2.4 Roof Cladding Span Tables 8

PART B

3.0 Flat Structures 11

3.1 Quick Selection Tables 11

3.2 Key Plan for Flat Structures 12

3.3 Connection Details 13

3.4 Table Index 15

3.5 Quick Selection Tables:

Purlins - Table 1 16

Headbeams Supporting Sheeting - Tables 2A, 2B, 2C 17

Rafters - Tables 3A, 3B, 3C & 3D 20

Headbeams Supporting Rafters - Tables 4A & 4B 24

Attachment Loads - Table 5 26

3.6 Typical Flat Structure Type 27 3.7 Design Examples: Flat Structures 28

PART C

4.0 Pitched Structures 33

4.1 Tables for Pitched Structures 33

4.2 Key Plan for Pitched Structures 34

4.3 Connection Details 35

4.4 Quick Selection Tables 39

Collar-Tie - Table 6A & 6B 39

Portal Frame Rafter - Tables 7A & 7B 41

Purlin - Tables 8A & 8B 43

4.5 Design Examples: Pitched Structures 45

Contents

1. General Data

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F100

2tD=100

W=50

W=50

W=50

D=150

D=2002t

2t

tt

t

F150 F200

FIRMLOK® SECTION PROPERTIES

FIRMLOK® Section

Mass

ZINCALUME®/ (COLORBOND®)

Nominal Dimension

D X W

Web Thickness

t

Full Section Area

A

Moment of Inertia Section Modulus Radius of Gyration

Ix Iy Zx Zy rx ry

kg/m mm mm mm2 mm4 mm4 mm3 mm3 mm mm

F10011 1.87 (1.90) 100 X 50 0.55 234 347000 81000 7050 3230 38.5 18.6

F15015 3.13 (3.17) 150 X 50 0.75 393 1256000 152000 16910 6068 56.5 19.7

F20020 4.95 (5.00) 200 X 50 1 620 3374000 258000 33990 10300 73.8 20.4

Notes:1. Depth and width are nominal dimensions.2. All section properties are based on gross section.

1.2 FIRMLOK® COMPONENTS

Note: for cladding fasteners, refer to cladding section of this document.

Universal Connector

FLUB100ZL05 – 100 purlin / rail FLUB150ZL05 – 150 purlin / rail FLUB200ZL05 – 200 purlin / rail

Ra�er Connector FLUB100ZL15 – 15° pitch, 100 ra�er FLUB150ZL15 – 15° pitch, 150 ra�er FLUB200ZL15 – 15° pitch, 200 ra�er

FLUB100ZL225 – 22.5° pitch, 100 ra�er FLUB150ZL225 – 22.5° pitch, 150 ra�er FLUB200ZL225 – 22.5° pitch, 200 ra�er

Delta Integrated Connector (22.5° pitch only) CC10 – 100 ra�er & purlin, end frame CC15X – 150 ra�er & purlin, end frame CCD10 – 100 ra�er & purlin, internal frame CCD10X – 150 ra�er & purlin, internal frame

Apex Connector FLAB100Z15 – 15° pitch, 100 ra�er FLAB150Z15 – 15° pitch, 150 ra�er FLAB200Z15 – 15° pitch, 200 ra�er

FLAB100Z225 – 22.5° pitch, 100 ra�er FLAB150Z225 – 22.5° pitch, 150 ra�er FLAB200Z225 – 22.5° pitch, 200 ra�er

Collar-tie Connector CTC10 – 22.5° pitch, 100 collar-tie CTC15 – 22.5° pitch, 150 collar-tie CTC1015 – 15° pitch, 100 collar-tie CTC1515 - 15° pitch, 150 collar-tie

Bolt M8/M10 cup/hex head bolts, standard /Nylock nut & washer, Grade 4.6 / S

Metal screw 12g-14x20mm hex head tek 12g-24x32mm hex head tek 12g-14x80mm hex head tek


Universal Connector











Universal Connector











Universal Connector










IDENTIFICATION

The format of the number code is:

F xxx xx

F = FIRMLOK® xxx = Section depth D (mm) xx = 2 t x 10 (mm)

Some component are subjected to availability, check with your local Lysaght branch.

Not all components available in all regions – contact you nearest Lysaght branch for more information.

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1.3 FIRMLOK® QUICK SELECTION TABLESINTRODUCTION

FIRMLOK® “Quick Selection Tables” provide an easy tool for determining the roof layout of your structure, using FIRMLOK® beams and lysaght cladding.

This guide is divided into sections: Cladding Selection, Flat Structures and Pitched Structures. Each section comprises of diagrams and span tables. The diagrams assist with selecting your structure type and the tables determine the size of each member based on loading.

When using the Quick Selection Tables, member designation is important.

• Purlins run at 90° to the ribs of your cladding and the cladding is screwed to them.

• Rafters generally run parallel to the ribs on your cladding and have purlins attached

• Headbeams support the upper and lower edge of the roof and are supported by posts.

USING QUICK SELECTION TABLES

The Quick Selection tables have been developed to be comprehensive and flexible, whilst remaining easy to use. The three sections allow you to design most typical structures with little effort.

Note: The sections for free-standing structures can be used to design similar attached structures, provided correct design of attachment to existing structure is performed.

To begin, you will need to determine:

Structure Type (Flat or Pitched): This will indicate which section of the “Quick Selection Tables” is appropriate to your design.

Wind classification (N1, N2, N3 or N4) and wind blocking: It is important to know the wind class for your area and structure. Refer to Australian Standards AS4055 - 2012 Wind loads for housing for wind classification. Alternatively, seek guidance from a qualified engineer or builder.

Structure size: The structure size is the overall width and length of the intended structure in plan view.

This is all the information you need to begin designing your structure. An experienced user will have no problems using the tables to design each structure. You may wish to refer to the example at the end of each section.

Attached Flat Structure

Attached Pitched Structure

Free-standing Flat Structure

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1.4 DESIGN CONDITIONS AND NOTES FOR THE TABLES GENERAL

This document is an engineering aid to help in the design of carports, awnings and patio covers by designers. This document gives all the information to design an economical structure based on the wind classification, wind blocking and geometry of the structure.

DESIGN STANDARDS

FIRMLOK® “Quick Selection Tables” have been prepared in accordance with the appropriate Australian Standards. Cladding, beam and connection capacities are based on limit state design and testing at LYSAGHT® Research and Technology. The following standards have been referenced:

• AS/NZS 4600: 2005 Cold formed steel structures

• AS/NZS 1170.0 - 2002 Part 0: General principles

• AS/NZS 1170.1 - 2002 Part 1: Permanent, imposed and other actions

• AS/NZS 1170.2 - 2011 Part 2: Wind Actions

• AS 4055 - 2012 Wind loads for housing

• AS 1562.1 - 1992 Design and installation of sheet roof and wall cladding Part 1: Metal

• AS 4040.2 - 1992 Methods of testing sheet roof and wall cladding – Resistance to wind pressure for non-cyclonic regions

• NCC - Building code of Australia (BCA) (current edition)

WIND

The tables presented in this brochure are for attached/freestanding awnings and pitched structures in normal wind (non-cyclonic) for wind classifications N1, N2, N3 and N4.

Design Wind speeds and wind pressure coefficient factors used to calculate the design net pressures have been derived from AS/NZS 1170.2-2011: Structural Design Actions Part 2: Wind Actions. For residential application, the wind classification system from AS 4055-2012: Wind Loads for Housing has been adopted for user convenience. For each structural configuration, five wind loading situations have been considered:

1B - one side blocked, typically attached to one side of an existing house or 0/4 sides blocked.

2B - two sides blocked, typically attached to two sides of an existing house

3B - three sides blocked, typically attached to three sides of an existing house; a "U" shaped configuration.

The structures with flat roof must have a roof slope greater than 2 degs and no greater than 10 degrees. Roof slopes higher than 10 degrees may experience greater wind loads than used in the design. Pitched roofs have been designed for 15 and 22.5 degrees.

WIND CLASSIFICATION NOTATION TO AS 4055 & NCC-BCA

NCC - BCA Wind Class

Legacy Wind Speed Notation

Permissable Stess Wind Speed Vp (m/s)

Serviceability Wind Speed

Vs (m/s)

Ultimate Wind Speed Vu (m/s)

Ultimate Wind Pressure (kPa)

N1 W28 28 26 34 0.69

N2 W33 33 26 40 0.96

N3 W41 41 32 50 1.50

N4 W50 50 39 61 2.23

LOADS

The structure is designed for the following loads:

• Wind Loads: as described above.

• Dead Loads: Self weight of both sheeting and FIRMLOK® beam have been considered. No allowance for ceilings or other dead loads uniformly distributed or point loads have been made.

• Live Loads: A Live Load of 0.25 kPa has been considered on the beams. A concentrated live load of 1.1kN factored up, has been considered on each beam individually.

DEFLECTION

Deflection limits adopted for the design of FIRMLOK® beams are:

• Dead Load: Span/300 for beams with a maximum of 20mm

• Wind Load: Span/150 for serviceability wind pressure

• Live Load: Not Applicable

ATTACHED AND FREESTANDING AWNINGS

The capacity of the existing structure to withstand the additional loads arising from the attached awning must be verified by a competent person, an engineer or builder. It’s advised to check with your local government authority to determine any specific requirements or rules for the attachment to existing structures.

Awnings have not been designed to account for any additional rainwater runoff, other than that falling directly onto its roof area. Rainwater must not be distributed from existing roofs onto the awning.

The quick selection tables have been created based on design and tested using LYSAGHT® components.

CONNECTIONS FOR STRUCTURES

When a beam is designed for strength, the connection at the ends of the beam must be checked against its strength. There are several connection types which are considered in the span tables. Beams are always connected to each other with FIRMLOK® universal connectors. These brackets connect to the beams basically with a bolt and one or two teks to the supported beam or post.

Bolts are used on the beam to beam connectors to distribute the load to the two sides of the supporting beam. The bolts are used with the post to take the higher loads from big spanning beams. The connection capacities for beams are based on a member supported by a member of the same size. If the supporting member is bigger the connection capacity may be stronger than indicated in the tables.

There are two main types of connections for beams to posts: Post behind beam using bolts and Post to side of beam using brackets. The connection capacities are based on extensive testing at our NATA registered laboratory.

For pitched structures, portal frame rafter and collar-tie truss frames and their immediate supports (e.g. post, existing structure etc.) are assumed to be connected as simple, moment free pinned connections.

Portal frame rafters are assumed to be laterally restrained by purlins only at eave, apex and internally where indicated on the relevant diagrams.

Post to side of beam with brackets

Post behind beam - bolted

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2.1 CLADDING SELECTION• The tables presented in this section are for non-cyclonic

conditions only.

• Wind Loads: Design Wind speeds have been based on the classification system used in AS4055:2012. Factors used to calculate the design net pressures have been derived from AS1170.2:2011. Five wind blocking cases relevant to home improvement structures have been considered.

• Flat roofs must have a roof slope no greater than 10 degrees and no less thaan 2 degrees. Roof slopes beyond 10 degrees may experience greater wind loads than have been designed for. Refer to the minimum roof pitch table.

• Pitched roofs have been designed for two slopes, 15 and 22.5 degrees.

• Dead Loads: Self weight of sheeting only has been considered.

• Live Load: No general live load has been used. As the sheet spans are for ‘No Foot Traffic’, i.e. no person is allowed to walk on the sheeting. Where spans have been reduced for foot traffic, the sheeting has been tested for a person weighing up to 110kg. Where the spans are used for no foot traffic, a sign should be attached to the inside of the beams.

The tables give the spans for wind pressure, termed “foot traffic - NO” and the span for foot traffic, termed “foot traffic - YES”. The sheeting has been tested in accordance to AS 4040.2 with serviceability deflection limit of Span/120 + Fastener Pitch/30. LYSAGHT FLATDEK® cladding spans may result in noticeable deflections under maximum loads. In situations where deflections are deemed critical, spans should be reduced to the walkable spans e.g. in a screen room.

NON-CYCLONIC AREAS

The information in this section for cladding is suitable for use only in areas where a tropical cyclone is unlikely to occur as defined in AS 1170.2:2011.

CLADDING AVAILABILITY

Not all sheeting available nationally. Please check availability with your local Lysaght branch.

Single Span

End Span End SpanInternal Span

Single Span

End Span End SpanInternal Span

Cladding Span Types

Cladding Overhang and Spans

FIRMLOK® Beam

FIRMLOK® Beam

50mm Min. Overhang

Overhang

50mm Min.

Sheet Length

Sheet Length

Sheet Span

Sheet Span

PART A2.0 Cladding

MINIMUM ROOF PITCH AND MAXIMUM SHEET OVERHANG

Lysaght Roofing Minimum Fall (mm/m) / Roof Pitch

Maximum overhang No foot traffic** (mm)

0.42mm CUSTOM ORB® 50 / 3° 300

0.40mm CUSTOM ORB ACCENT 21® 50 / 3° 400

0.42mm SPANDEK® 35 / 2° 630

0.42mm TRIMDEK® 35 / 2° 430

0.42mm FLATDEK® * 25 / 1.5° 630

0.42mm FLATDEK® II * 35 / 2° 630

0.48mm KLIP-LOK® 406 25 / 1.5° 600

0.42mm KLIP-LOK CLASSIC® 700 25 / 1.5° 530

0.42mm KLIPLOK 700HS 25 / 1.5° 530

* To achieve 1.5° pitch,it is recommended to build a gutter around the perimeter of the flat roof.

** These spans are only applicable for overhanging sheets attached with a gutter or an angle stiffener.

For gutter and roof maintainence, always walk on the support beams, do not walk on the sheets overhang or use the overhang sheets as support. See diagrams below. Maximum roof pitch for a flat structure is 10°. The maximum span for maintenance foot traffic on sheet overhang is 100mm for all sheets.

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2.2 CLADDING TYPES AND RECOMMENDED FIXING PATTERNS FOR HOME IMPROVEMENT APPLICATIONS

Lysaght Claddings Flat Roof Pitched Roof

Fix to Purlin Fix to Purlin Fix to Rail Fix to Ridge

CUSTOM ORB®

CUSTOM ORB ACCENT 21®

#12-14x39 AutoTeks®

#12-14x45* (Crest fixed)





#12-14x45*

M6-11x50 RoofZips (Crest fixed)

#12-14x20 Metal Teks®

#12-14x25 AutoTeks® (Pan fixed)

SPANDEK®

TRIMDEK®




#12-14x45*

M6-11x50 RoofZips® (Crest fixed)

#12-14x65*

M6-11x65 RoofZips® (Crest fixed)



FLATDEK®/ FLATDEK® II

KLIP-LOK® 406

KLIP-LOK 700 HI-STRENGTH®/ KLIPLOK CLASSIC®









Notes:

All screws to have hex head with EDPM seal, minimum coating class is Class 4 to AS3566.Teks, AutoTeks and RoofZips are registered trademarks of Buildex.

* Fully threaded equivalent fastener.

2.3 CLADDING FASTENERS

CUSTOM ORB® / CUSTOM ORB ACCENT 21®

SPANDEK®

TRIMDEK®

FLATDEK®

FLATDEK® II

KLIP-LOK® 406

KLIP-LOK 700 HI-STRENGTH®

KLIP-LOK CLASSIC® 700

Notes:

At side-laps, pan fix to female rib. For wide pan cladding such as FLATDEK® or KLIP-LOK®, position 1 fastener at centre and 1 fastener next to the rib in each pan. If translucent sheeting is used as light panels, there must be at least 2 metal sheets between each translucent sheet. The light panels must be stitched to the side of the metal sheets if the spans from the tables are used.

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB

CUSTOM ORB ACCENT 21

KLIP-LOK 406

KLIP-LOK CLASSIC 700

KLIP-LOK 700 HI-STRENGTH

SPANDEK

TRIMDEK

No. of Fixings: 5 per sheet

1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

1 2 3 4

25 NOM

25 MAX

25 NOM

FLATDEK II

FLATDEK

CUSTOM ORB


KLIP-LOK 406



SPANDEK

TRIMDEK


1 2 3 4 5Overlap









Crest fixed

Male Rib

Male Rib

Female Rib

Female Rib

Female Rib

Pan fixed

1 2 3 4

1 2 3

25 NOM

4

1 2 3 4

5

OverlapPan Fixing

Overlap

Female Rib

Female Rib

Male Rib

Male Rib

Male Rib

1 2 3 4 5Overlap

25 NOM

25 NOM

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2.4 ROOF CLADDING SPAN TABLES

N1 & N2 - 0/1/4 SIDES BLOCKED


End / Int. Span Single Span End / Int. Span Single Span

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900

CUSTOM ORB ACCENT 21® 0.40 1800 1200 1800 900 1800 1200 1800 900

FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3600 2600 3600 2100 3600 2600 3300 2100

KLIP-LOK CLASSIC® 700 0.42 3600 2600 3600 2100 3600 2600 3300 2100

KLIP-LOK 700 HI-STRENGTH® 0.42 * 3600 2600 3600 2100 3600 2600 3300 2100

SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300

N1 & N2 - 2 SIDES BLOCKED



Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3600 2600 3600 2100 3600 2600 3300 2100

KLIP-LOK CLASSIC® 700 0.42 3600 2600 3600 2100 3600 2600 3300 2100


SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300

N1 & N2 - 3 SIDES BLOCKED



Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3600 2600 3600 2100 3600 2600 3300 2100

KLIP-LOK CLASSIC® 700 0.42 3600 2600 3600 2100 3600 2600 3300 2100


SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300

Notes:

1. All spans are in mm.

2. The “No Foot Traffic” span range is designed for the condition where no person is allowed to walk on the roof. The design criteria includes deflection due to self weight, maximum wind pressure and fastener capacity based on FIRMLOK® beams. A sticker must be placed on the supporting beams which has the No Foot Traffic sign on it.

3. The ‘FOOT TRAFFIC’ spans were derived from testing carried out for home improvement type structures only. The foot traffic spans have been tested for a person with a weight up to 110kg. This design criteria is different to the testing criteria in AS 4040.1:1992.

4. The above tables can be used for sheets with bigger thickness of the same LYSAGHT® profile and material specification.

5. All sheeting materials are G550 grade steel with COLORBOND® or ZINCALUME® steel.

6. For cladding with foot traffic, use the smaller of the two spans given in the tables (YES = foot traffic, NO = no foot traffic ).

7. For more details on LYSAGHT® claddings, refer to the individual product brochures by visiting www.lysaght.com.

8. *KL700HS, if sheet span ≥ 2400mm, provide 1 rivet/screw at the side-lap at mid-span to keep sheets together. *TRIMDEK® & SPANDEK®, if sheet span ≥ 2000mm, provide 1 rivet/screw at the side-lap at mid-span to keep sheets together. *CUSTOM ORB®, if sheet span ≥ 1500mm, provide 1 rivet/screw at the side-lap at mid-span to keep sheets together.

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N3 - 0/1/4 SIDES BLOCKED



Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3600 2600 3600 2100 3600 2600 3300 2100

KLIP-LOK CLASSIC® 700 0.42 3600 2600 3600 2100 3600 2600 3300 2100


SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300

N3 - 2 SIDES BLOCKED



Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3000 2600 3000 2100 3000 2600 3300 2100

KLIP-LOK CLASSIC® 700 0.42 3565 2600 3580 2100 3565 2600 3300 2100


SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300




Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3000 2600 3000 2100 3000 2600 3000 2100

KLIP-LOK CLASSIC® 700 0.42 3000 2600 3000 2100 3000 2600 3000 2100


SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300

Notes:









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N4 - 0/1/4 SIDES BLOCKED



Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4500 2600 4500 2100 4000 2600 3300 2100

FLATDEK® II 0.42 4000 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 3600 2600 3600 2100 3600 2600 3300 2100

KLIP-LOK CLASSIC® 700 0.42 3600 2600 3600 2100 3600 2600 3300 2100


SPANDEK® 0.42 * 3000 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300




Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 4300 2600 4340 2100 4000 2600 3300 2100

FLATDEK® II 0.42 3605 2600 4000 2100 3500 2600 3000 2100

KLIP-LOK® 406 0.48 2250 2600 2250 2100 2250 2600 2250 2100

KLIP-LOK CLASSIC® 700 0.42 2250 2600 2250 2100 2250 2600 2250 2100


SPANDEK® 0.42 * 2950 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2700 2000 2400 1300 2100 2000 2100 1300




Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

Foot Traffic No Yes

CUSTOM ORB® 0.42 * 1800 1200 1800 900 1800 1200 1800 900


FLATDEK® 0.42 3730 2600 3875 2100 3730 2600 3300 2100

FLATDEK® II 0.42 3005 2600 3875 2100 3005 2600 3000 2100

KLIP-LOK® 406 0.48 1785 1785 1785 1785 1785 1785 1785 1785

KLIP-LOK CLASSIC® 700 0.42 1785 1785 1785 1785 1785 1785 1785 1785


SPANDEK® 0.42 * 2420 1800 3000 1300 2400 1800 2400 1300

TRIMDEK® 0.42 * 2450 2000 2400 1300 2100 2000 2100 1300

Notes:









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3.1 QUICK SELECTION TABLESThere are several tables based on the type of member and the way it is loaded together with the connection at the end of the beam. The tables are used to give the span of FIRMLOK® beams for different wind classifications and wind blocking based on the applied load and the load width. The table is organised as shown below:

HEADBEAM OVERHANG

Headbeams can have overhang and are tabulated for beams supporting sheeting only. A bolted post behind connection must be used to overhang the headbeam past the supporting post. The headbeam span must be the span shown in the diagram to get the strength of the beam. With this span the post can be moved in creating the overhang. This distance can only be up to the span/4 (one quarter of the span). The maximum overhang each beam can have is given in the overhang table.

HEADBEAM OVERHANG (MM)

FIRMLOK® Beam Size Maximum Overhang

F100 1000

F150 1250

F200 1750

For supporting cladding only.

PART B3.0 Flat Structures

EXTRACT FROM A SPAN TABLE

Wind Blocking Wind Class Beam Size Load Width (mm)3000

0/1/4 sides N1/ N2 F100

F200

F300

4800, 1.0

7500, 1.5

9250, 2.0

The width of loading to be supported by the selected beam.

Reaction load at the end of the beam. This is used to work out the total load for the support.

Maximum beam span.

Post

hei

ght

Post

Post

Post

Headbeam Span Headbeam Span

Headbeam Headbeam

HeadbeamOverhang

Min. Back Span = 3x Overhang

Post on slabPost intofooting

Post into core drilled footing

Slab

Purlin

Purlin

Ra�erHeadbeam

Sheeting

Post

Basic Terminology Sheet Overhang

Headbeam

Shee

t Ove

rhan

g

Shee

t Len

gth

Load

Wid

th

Fall

attached or freestanding

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3.2 KEY PLANS FOR FLAT STRUCTURES

For typical beam to bracket detail, refer to connection on the following pages.

For typical beam to bracket detail, refer to connection on the following pages.

F7

F3

F5F3F7F5

Post Behind Beam Connections

Beam to Side of Post Connections

F1

F1

F9

F4a

F4bF4a

Attached Structure

Purlin Purlin

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Headbeam

F4a

F2

F6F4a

F4b

F8F6

F4a

F9

F2

Attached Structure

Purlin Purlin

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Headbeam

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3.3 CONNECTION DETAILS

F1a UNIVERSAL BRACKET TO BEAM

F100: 4x 12g-14x20 Teks

F150 & F200: 6x 12g-14x20 Teks

F100: 1x M8 Hex Head Bolt1x 12g-14x20 Tek

F150/F200: 1x M8 Hex Head Bolt2x 12g-14x20 Teks

F100:1x M8 Cuphead Bolt+ 1x 12g-14x20 Tek

F150/F200: 1x M8 Cuphead Bolt+ 2x 12g-14x20 Teks

F100, X=N/AF150, X=35mmF200, X=50mm

F100:1x M8 Hex Head Bolt + 1x 12g-14x20 Tek - Typical

F150/F200: 1x M8 Hex Head Bolt + 2x 12g-14x20 Teks - Typical

VIEW A

VIEW B

Substitute12g-14x20 Teks with 12g-14x80 TeksIf access is restricted. Ensure Teks penetrate both sides of bracket and beam into post

Fix beam to post with 2x M10 Cuphead Bolts located in beam indents

For beam to bracket refer to F1a

F4 TYPICAL BEAM TO BEAM CONNECTIONS

F4b BEAM TO BEAM CONNECTION

F4a BEAM T - JUNCTION

F2 BEAMS TO SIDE OF POST CONNECTION F3 POST BEHIND BEAM CONNECTION

F1 BRACKET TO BEAM CONNECTIONS

F1b UNIVERSAL BRACKET TO BEAM AT POST F5 POST BEHIND HEADBEAM AT CORNER WITH RAFTER CONNECTION F7 POST BEHIND WITH INCOMING BEAM CONNECTION

F6 BEAMS TO SIDE OF POST AT CORNER CONNECTION F8 3 BEAMS TO SIDE OF POST CONNECTION

F9a BEAM TO EXISITING FASCIA

F9 BEAM TO ATTACHED STRUCTURE CONNECTION

For beam to post refer to F3

For beam to bracket refer to F1a use short Teks only this side

For beam to post refer to F1b long Teks ra�er side

Refer to F4a For post behind beam refer to F3

For beam to beam refer to F4

For beam to post refer to

F1b long Teks ra�er side

For beam to side of post refer to F2 stagger bolt location where necessaryFor beam to bracket refer to F1a

Existing house ra�er

Timber or metal fascia

FIRMLOK® beam must be directly connected to a load carrying member, connection detail to be designed by a qualitied engineer

F9b BEAM TO EXISTING WALL

Existing timber or masonry wallConnecting bracket

FIRMLOK® Beam

FIRMLOK® Beam




For beam to side of post refer to F2 stagger bolt location where necessary

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F1a UNIVERSAL BRACKET TO BEAM

F100: 4x 12g-14x20 Teks

F150 & F200: 6x 12g-14x20 Teks

F100: 1x M8 Hex Head Bolt1x 12g-14x20 Tek

F150/F200: 1x M8 Hex Head Bolt2x 12g-14x20 Teks

F100:1x M8 Cuphead Bolt+ 1x 12g-14x20 Tek

F150/F200: 1x M8 Cuphead Bolt+ 2x 12g-14x20 Teks

F100, X=N/AF150, X=35mmF200, X=50mm

F100:1x M8 Hex Head Bolt + 1x 12g-14x20 Tek - Typical

F150/F200: 1x M8 Hex Head Bolt + 2x 12g-14x20 Teks - Typical

VIEW A

VIEW B

Substitute12g-14x20 Teks with 12g-14x80 TeksIf access is restricted. Ensure Teks penetrate both sides of bracket and beam into post

Fix beam to post with 2x M10 Cuphead Bolts located in beam indents


F4 TYPICAL BEAM TO BEAM CONNECTIONS

F4b BEAM TO BEAM CONNECTION

F4a BEAM T - JUNCTION

F2 BEAMS TO SIDE OF POST CONNECTION F3 POST BEHIND BEAM CONNECTION

F1 BRACKET TO BEAM CONNECTIONS

F1b UNIVERSAL BRACKET TO BEAM AT POST F5 POST BEHIND HEADBEAM AT CORNER WITH RAFTER CONNECTION F7 POST BEHIND WITH INCOMING BEAM CONNECTION

F6 BEAMS TO SIDE OF POST AT CORNER CONNECTION F8 3 BEAMS TO SIDE OF POST CONNECTION

F9a BEAM TO EXISITING FASCIA

F9 BEAM TO ATTACHED STRUCTURE CONNECTION

For beam to post refer to F3

For beam to bracket refer to F1a use short Teks only this side

For beam to post refer to F1b long Teks ra�er side

Refer to F4a For post behind beam refer to F3

For beam to beam refer to F4

For beam to post refer to

F1b long Teks ra�er side

For beam to side of post refer to F2 stagger bolt location where necessaryFor beam to bracket refer to F1a

Existing house ra�er

Timber or metal fascia

FIRMLOK® beam must be directly connected to a load carrying member, connection detail to be designed by a qualitied engineer

F9b BEAM TO EXISTING WALL

Existing timber or masonry wallConnecting bracket

FIRMLOK® Beam

FIRMLOK® Beam




For beam to side of post refer to F2 stagger bolt location where necessary

Notes:

1. All screws are self drilling metal Hex Head Teks® 12g-14x20 i.e. 12 gauge with 14 TPI, 20 long U.N.O. Values given are: gauge - threads per inch x length in mm. Tek is a trademark of Buildex.

2. The finish for all Teks is Coating Class 4.

3. All bolts are galavanised M8 steel for beam to beam & beam to side of post connection, Grade 4.6 snug-tight.

4. All bolts are galavnised M10 steel for connections to posts, Grade 4.6 snug-tight.

5. Bolts are either hex head or cuphead; see connection details.

6. Use standard nut and washer in Non-cyclonic areas & Nylock nuts in Cyclonic areas.

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3.4 TABLE INDEXFLAT STRUCTURES - ATTACHED AND FREE STANDING

Table Beam Span Type Supporting Connection

1 Purlin Simply supported Sheeting Beam to side of beam/post

2A Headbeam Simply supported Sheeting Beam to side of post

2B Headbeam Simply supported Sheeting Post bolted behind beam

2C Headbeam Multiple continuous Sheeting Beam to side of post

3A Rafter Simply supported 1 Purlin Beam to side of post

Post bolted behind beam

3B Rafter Simply supported 2 Purlins Beam to side of post


3C Rafter Double continuous 1 Purlin Beam to side of post

3D Rafter Double continuous 2 Purlins Beam to side of post

4A Headbeam Simply supported 1 Rafter Beam to side of post


4B Headbeam Simply supported 2 Rafters Beam to side of post


5 Attachment load Simply supported 0 Rafters Attached to fascia or wall

16FIR

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3.5

QU

ICK

SEL

ECTI

ON

TA

BLE

STa

ble

1

Purli

n Sp

an a

nd R

eact

ion.

Spa

n Ty

pe: S

impl

y Su

ppor

ted.

Con

nect

ion:

Bra

cket

. Sup

porti

ng: S

heet

ing.

Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Purl

in L

oad

Wid

th (m

m)

≤ 9

00

120

015

00

180

02

100

24

00

27

00

30

00

33

00

36

00

39

00

42

00

45

00

0/1

/4 s

ides

N1

/ N

2F1

0054

00, 1

.550

00, 1

.547

00, 1

.544

50, 2

.042

50, 2

.040

50, 2

.539

00, 2

.538

00, 2

.537

00, 3

.036

00, 3

.035

00, 3

.034

00, 3

.533

50, 3

.5

F150

7500

, 1.5

7100

, 2.0

6750

, 2.5

6500

, 2.5

6300

, 3.0

6100

, 3.5

5950

, 3.5

5750

, 4.0

5600

, 4.0

5450

, 4.5

5300

, 4.5

5200

, 5.0

5100

, 5.0

F200

9250

, 2.0

8800

, 2.5

8450

, 3.0

8150

, 3.5

7900

, 3.5

7700

, 4.0

7500

, 4.5

7350

, 5.0

7200

, 5.5

7050

, 5.5

6950

, 6.0

6850

, 6.5

6700

, 6.5

N3

F100

5400

, 2.0

4900

, 2.5

4550

, 2.5

4250

, 3.0

4050

, 3.0

3850

, 3.5

3700

, 3.5

3550

, 4.0

3400

, 4.0

3250

, 4.5

3150

, 4.5

3000

, 4.5

2900

, 5.0

F150

7500

, 2.5

7100

, 3.0

6750

, 3.5

6500

, 4.5

6250

, 5.0

5950

, 5.0

5700

, 5.5

5500

, 6.0

5350

, 6.5

5150

, 6.5

4950

, 7.0

4750

, 7.0

4600

, 7.5

F200

9250

, 3.0

8800

, 4.0

8450

, 4.5

8150

, 5.0

7900

, 6.0

7700

, 6.5

7500

, 7.0

7350

, 8.0

7200

, 8.5

7050

, 9.0

6950

, 9.5

6750

, 10.

065

50, 1

0.5

N4

F100

4650

, 2.5

4200

, 3.0

3900

, 3.5

3650

, 3.5

3450

, 4.0

3250

, 4.5

3050

, 4.5

2900

, 5.0

2750

, 5.0

2650

, 5.5

2450

, 5.5

2300

, 5.5

2150

, 5.5

F150

7200

, 3.5

6500

, 4.5

6000

, 5.0

5650

, 5.5

5350

, 6.0

5100

, 6.5

4800

, 7.0

4550

, 7.5

4350

, 8.0

4150

, 8.0

4000

, 8.5

3850

, 9.0

3700

, 9.0

F200

9250

, 4.5

8800

, 5.5

8450

, 7.0

7900

, 7.5

7500

, 8.5

7150

, 9.5

6850

, 10.

065

00, 1

0.5

6200

, 11.

059

00, 1

1.5

5700

, 12.

054

50, 1

2.5

5300

, 13.

0

2 s

ides

N1

/ N

2F1

00

4850

, 2.0

4400

, 2.5

4050

, 3.0

3800

, 3.5

3600

, 3.5

3450

, 4.0

3300

, 4.5

3150

, 4.5

3000

, 5.0

2850

, 5.0

2750

, 5.0

2650

, 5.5

2500

, 5.5

F150

7500

, 3.0

6800

, 4.0

6300

, 4.5

5900

, 5.0

5600

, 5.5

5350

, 6.0

5100

, 6.5

4950

, 7.0

4700

, 7.5

4500

, 7.5

4300

, 8.0

4150

, 8.0

4000

, 8.5

F200

9250

, 4.0

8800

, 5.0

8450

, 6.0

8150

, 7.0

7850

, 7.5

7450

, 8.5

7150

, 9.0

6900

, 9.5

6700

, 10.

064

00, 1

0.5

6150

, 11.

059

00, 1

1.5

5700

, 12.

0

N3

F100

4150

, 3.0

3750

, 3.5

3450

, 4.0

3200

, 4.5

2950

, 4.5

2750

, 5.0

2600

, 5.5

2350

, 5.5

2150

, 5.5

1950

, 5.5

1800

, 5.5

1650

, 5.5

1550

, 5.5

F150

6400

, 4.5

5800

, 5.0

5350

, 6.0

5050

, 7.0

4700

, 7.5

4350

, 8.0

4100

, 8.0

3900

, 8.5

3700

, 9.0

3550

, 9.5

3400

, 10.

033

00, 1

0.5

3100

, 10.

5

F200

9000

, 6.0

8100

, 7.0

7500

, 8.5

7050

, 9.5

6650

, 10.

562

00, 1

1.0

5850

, 11.

555

50, 1

2.0

5300

, 13.

050

50, 1

3.5

4800

, 14.

044

50, 1

3.5

4150

, 13.

5

N4

F100

3550

, 3.5

3200

, 4.5

2850

, 5.0

2600

, 5.5

2250

, 5.5

1950

, 5.5

1750

, 5.5

1550

, 5.5

1400

, 5.5

1300

, 5.5

1200

, 5.5

1100

, 5.5

1050

, 5.5

F150

5500

, 5.5

5000

, 6.5

4500

, 7.5

4100

, 8.5

3800

, 9.0

3550

, 9.5

3350

, 10.

030

50, 1

0.0

2800

, 10.

525

50, 1

0.5

2350

, 10.

022

00, 1

0.5

2050

, 10.

5

F200

7750

, 7.5

7000

, 9.5

6400

, 10.

558

50, 1

1.5

5400

, 12.

550

50, 1

3.5

4650

, 14.

041

50, 1

4.0

3800

, 14.

034

50, 1

4.0

3200

, 14.

029

50, 1

3.5

2750

, 13.

5

3 s

ides

N1

/ N

2F1

0045

00, 2

.541

00, 3

.038

00, 3

.535

50, 4

.033

50, 4

.032

00, 4

.530

00, 4

.528

50, 5

.027

00, 5

.026

00, 5

.524

00, 5

.522

00, 5

.520

50, 5

.5

F150

7000

, 3.5

6350

, 4.5

5850

, 5.0

5500

, 5.5

5200

, 6.0

4950

, 7.0

4750

, 7.5

4500

, 7.5

4250

, 8.0

4100

, 8.5

3950

, 8.5

3800

, 9.0

3650

, 9.5

F200

9250

, 4.5

8800

, 6.0

8200

, 7.0

7700

, 7.5

7300

, 8.5

6950

, 9.5

6700

, 10.

064

00, 1

0.5

6100

, 11.

558

00, 1

1.5

5600

, 12.

054

00, 1

2.5

5200

, 13.

0

N3

F100

3850

, 3.5

3500

, 4.0

3200

, 4.5

2900

, 5.0

2700

, 5.0

2450

, 5.5

2150

, 5.5

1950

, 5.5

1750

, 5.5

1600

, 5.5

1500

, 5.5

1400

, 5.5

1300

, 5.5

F150

6000

, 5.0

5400

, 6.0

5000

, 7.0

4600

, 7.5

4250

, 8.0

4000

, 8.5

3750

, 9.0

3550

, 9.5

3400

, 10.

032

00, 1

0.5

2950

, 10.

527

50, 1

0.5

2550

, 10.

5

F200

8400

, 6.5

7600

, 8.0

7000

, 9.5

6550

, 10.

560

50, 1

1.5

5650

, 12.

053

50, 1

3.0

5050

, 13.

547

00, 1

4.0

4300

, 13.

540

00, 1

4.0

3700

, 14.

034

50, 1

4.0

N4

F100

3350

, 4.0

2900

, 5.0

2600

, 5.5

2150

, 5.5

1850

, 5.5

1600

, 5.5

1450

, 5.5

1300

, 5.5

1150

, 5.0

1050

, 5.0

1000

, 5.5

900,

5.0

850,

5.5

F150

5150

, 6.5

4600

, 7.5

4100

, 8.5

3750

, 9.0

3450

, 9.5

3200

, 10.

528

50, 1

0.5

2550

, 10.

523

00, 1

0.0

2100

, 10.

019

50, 1

0.0

1800

, 10.

017

00, 1

0.5

F200

7250

, 8.5

6550

, 10.

558

50, 1

1.5

5300

, 12.

549

00, 1

3.5

4300

, 13.

538

50, 1

4.0

3450

, 14.

031

50, 1

4.0

2850

, 13.

526

50, 1

4.0

2450

, 13.

523

00, 1

4.0

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

purli

n sp

an in

mm

, the

2nd

val

ue in

the

tabl

e is

the

reac

tion

(kN

) on

the

supp

ortin

g ra

fter.

3. T

he re

actio

n is

base

d on

1 p

urlin

span

and

2 ra

fter s

uppo

rts. F

or 2

or m

ore

simpl

y sp

an p

urlin

s, d

oubl

e (2

x) th

e re

actio

n fo

r int

erna

l raf

ters

.4.

Pur

lin sp

an =

spac

ing

of ra

fters

.5.

Val

ues f

rom

1 si

ded

bloc

ked

can

be c

onse

rvat

ivel

y us

ed fo

r 0 a

nd 4

side

s win

d bl

ocki

ng.

Dia

gra

m 1

Purli

n su

ppor

ting

shee

ting.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

17FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

Tab

le 2

A

Hea

dbea

m S

pan

and

Reac

tion,

Spa

n Ty

pe: S

impl

y Su

ppor

ted,

Con

nect

ion:

Bra

cket

, Sup

porti

ng: S

heet

ing,

Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Hea

db

eam

Lo

ad W

idth

(mm

)

≤ 9

00

120

015

00

180

02

100

24

00

27

00

30

00

33

00

36

00

39

00

42

00

45

00

0/1

/4 s

ides

N1

/ N

2F1

0054

00, 1

.550

00, 1

.547

00, 1

.544

50, 2

.042

50, 2

.040

50, 2

.539

00, 2

.538

00, 2

.537

00, 3

.036

00, 3

.035

00, 3

.034

00, 3

.533

00, 3

.5

F150

7500

, 1.5

7100

, 2.0

6700

, 2.5

6500

, 2.5

6300

, 3.0

6100

, 3.5

5950

, 3.5

5750

, 4.0

5600

, 4.0

5450

, 4.5

5300

, 4.5

5200

, 5.0

5100

, 5.0

F200

9250

, 2.0

8800

, 2.5

8450

, 3.0

8050

, 3.0

7900

, 3.5

7700

, 4.0

7500

, 4.5

7350

, 5.0

7200

, 5.5

7050

, 5.5

6950

, 6.0

6850

, 6.5

6700

, 6.5

N3

F100

5400

, 2.0

4900

, 2.5

4550

, 2.5

4250

, 3.0

4050

, 3.0

3850

, 3.5

3700

, 3.5

3550

, 4.0

3400

, 4.0

3250

, 4.5

3150

, 4.5

3000

, 4.5

2900

, 5.0

F150

7500

, 2.5

7100

, 3.0

6750

, 3.5

6500

, 4.5

6250

, 5.0

5950

, 5.0

5700

, 5.5

5500

, 6.0

5350

, 6.5

5150

, 6.5

4900

, 7.0

4750

, 7.0

4600

, 7.5

F200

9250

, 3.0

8800

, 4.0

8450

, 4.5

8050

, 5.0

7900

, 6.0

7700

, 6.5

7500

, 7.0

7350

, 8.0

7200

, 8.5

7050

, 9.0

6950

, 9.5

6750

, 10.

065

50, 1

0.5

N4

F100

4650

, 2.5

4200

, 3.0

3900

, 3.5

3650

, 3.5

3450

, 4.0

3250

, 4.5

3050

, 4.5

2900

, 5.0

2750

, 5.0

2650

, 5.5

2450

, 5.5

2300

, 5.5

2150

, 5.5

F150

7200

, 3.5

6500

, 4.5

6000

, 5.0

5600

, 5.5

5300

, 6.0

5100

, 6.5

4800

, 7.0

4550

, 7.5

4300

, 8.0

4150

, 8.0

4000

, 8.5

3850

, 9.0

3700

, 9.0

F200

9250

, 4.5

8800

, 5.5

8450

, 7.0

7900

, 7.5

7500

, 8.5

7150

, 9.5

6850

, 10.

065

00, 1

0.5

6200

, 11.

059

00, 1

1.5

5700

, 12.

054

50, 1

2.5

5300

, 13.

0

2 s

ides

N1

/ N

2F1

00

4850

, 2.0

4400

, 2.5

4050

, 3.0

3800

, 3.5

3600

, 3.5

3450

, 4.0

3300

, 4.5

3150

, 4.5

3000

, 5.0

2850

, 5.0

2700

, 5.0

2650

, 5.5

2500

, 5.5

F150

7500

, 3.0

6800

, 4.0

6300

, 4.5

5900

, 5.0

5600

, 5.5

5350

, 6.0

5050

, 6.5

4950

, 7.0

4700

, 7.5

4500

, 7.5

4300

, 8.0

4150

, 8.0

4000

, 8.5

F200

9250

, 4.0

8800

, 5.0

8450

, 6.0

8050

, 6.5

7850

, 7.5

7450

, 8.5

7150

, 9.0

6900

, 9.5

6700

, 10.

063

00, 1

0.5

6150

, 11.

059

00, 1

1.5

5700

, 12.

0

N3

F100

4150

, 3.0

3750

, 3.5

3450

, 4.0

3200

, 4.5

2950

, 4.5

2750

, 5.0

2600

, 5.5

2350

, 5.5

2150

, 5.5

1950

, 5.5

1750

, 5.0

1650

, 5.5

1550

, 5.5

F150

6400

, 4.5

5800

, 5.0

5350

, 6.0

5050

, 7.0

4700

, 7.5

4200

, 7.5

4050

, 8.0

3850

, 8.5

3700

, 9.0

3550

, 9.5

3400

, 10.

033

00, 1

0.5

3150

, 10.

5

F200

9000

, 6.0

8100

, 7.0

7500

, 8.5

7050

, 9.5

6550

, 10.

062

00, 1

1.0

5850

, 11.

555

50, 1

2.0

5300

, 13.

050

50, 1

3.5

4850

, 14.

047

00, 1

4.5

4500

, 15.

0

N4

F100

3500

, 3.5

3200

, 4.5

2850

, 5.0

2600

, 5.5

2250

, 5.5

1950

, 5.5

1750

, 5.5

1550

, 5.5

1400

, 5.5

1300

, 5.5

1200

, 5.5

1100

, 5.5

1050

, 5.5

F150

5500

, 5.5

5000

, 6.5

4500

, 7.5

4100

, 8.5

3800

, 9.0

3500

, 9.5

3350

, 10.

031

50, 1

0.5

2850

, 10.

526

00, 1

0.5

2400

, 10.

522

00, 1

0.5

2050

, 10.

5

F200

7750

, 7.5

7000

, 9.5

6400

, 10.

558

50, 1

1.5

5400

, 12.

550

50, 1

3.5

4750

, 14.

045

00, 1

5.0

4300

, 15.

541

00, 1

6.5

3850

, 16.

535

50, 1

6.5

3300

, 16.

5

3 s

ides

N1

/ N

2F1

0045

00, 2

.541

00, 3

.038

00, 3

.534

00, 3

.533

50, 4

.032

00, 4

.529

50, 4

.528

50, 5

.027

00, 5

.026

00, 5

.524

00, 5

.522

00, 5

.520

50, 5

.5

F150

7000

, 3.5

6350

, 4.5

5800

, 5.0

5500

, 5.5

5200

, 6.0

4950

, 7.0

4750

, 7.5

4500

, 7.5

4250

, 8.0

4100

, 8.5

3950

, 8.5

3800

, 9.0

3650

, 9.5

F200

9250

, 4.5

8800

, 6.0

8200

, 7.0

7650

, 7.5

7300

, 8.5

6950

, 9.5

6700

, 10.

064

00, 1

0.5

6100

, 11.

558

00, 1

1.5

5600

, 12.

054

00, 1

2.5

5200

, 13.

0

N3

F100

3850

, 3.5

3500

, 4.0

3200

, 4.5

2900

, 5.0

2700

, 5.0

2450

, 5.5

2100

, 5.0

1950

, 5.5

1750

, 5.5

1600

, 5.5

1500

, 5.5

1400

, 5.5

1300

, 5.5

F150

6000

, 5.0

5400

, 6.0

5000

, 7.0

4600

, 7.5

4250

, 8.0

4000

, 8.5

3750

, 9.0

3550

, 9.5

3400

, 10.

032

50, 1

0.5

3000

, 10.

528

00, 1

0.5

2600

, 10.

5

F200

8400

, 6.5

7600

, 8.0

7000

, 9.5

6550

, 10.

559

50, 1

1.0

5650

, 12.

053

50, 1

3.0

5050

, 13.

548

00, 1

4.0

4600

, 14.

544

00, 1

5.0

4250

, 16.

041

00, 1

6.5

N4

F100

3350

, 4.0

2900

, 5.0

2600

, 5.5

2150

, 5.5

1850

, 5.5

1600

, 5.5

1450

, 5.5

1300

, 5.5

1150

, 5.0

1050

, 5.0

1000

, 5.5

900,

5.0

800,

5.0

F150

5100

, 6.0

4600

, 7.5

4100

, 8.5

3750

, 9.0

3450

, 9.5

3250

, 10.

529

00, 1

0.5

2600

, 10.

523

50, 1

0.5

2150

, 10.

520

00, 1

0.5

1850

, 10.

517

00, 1

0.5

F200

7250

, 8.5

6550

, 10.

558

50, 1

1.5

5300

, 12.

549

00, 1

3.5

4600

, 14.

543

50, 1

5.5

4100

, 16.

537

50, 1

6.5

3450

, 16.

532

00, 1

6.5

2950

, 16.

527

50, 1

6.5

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

head

beam

span

in m

m, t

he 2

nd v

alue

in th

e ta

ble

is th

e te

nsile

reac

tion

(kN

) on

the

supp

ort (

post

).3.

The

pos

t rea

ctio

n is

base

d on

1 h

eadb

eam

span

and

2 su

ppor

ts. F

or 2

or m

ore

simpl

y sp

an h

eadb

eam

s, d

oubl

e (2

x) th

e po

st re

actio

n fo

r int

erna

l pos

ts.

4. H

eadb

eam

span

= sp

acin

g of

supp

orts

.5.

Val

ues f

rom

1 si

ded

bloc

ked

can

be c

onse

rvat

ivel

y us

ed fo

r 0 a

nd 4

side

s win

d bl

ocki

ng.

Dia

gra

m 2

A

Hea

d be

am, n

o ra

fters

bra

cket

to si

de

of p

ost.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

18FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

Tab

le 2

B

Hea

dbea

m S

pan

and

Reac

tion,

Spa

n Ty

pe: S

impl

y Su

ppor

ted,

Con

nect

ion:

Bol

ted,

Sup

porti

ng: S

heet

ing,

Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Hea

db

eam

Lo

ad W

idth

(mm

)

≤ 9

00

120

015

00

180

02

100

24

00

27

00

30

00

33

00

36

00

39

00

42

00

45

00

0/1

/4 s

ides

N1

/ N

2F1

0054

00, 1

.550

00, 1

.547

00, 1

.544

50, 2

.042

50, 2

.040

50, 2

.539

00, 2

.538

00, 2

.537

00, 3

.036

00, 3

.035

00, 3

.034

00, 3

.533

00, 3

.5

F150

7500

, 1.5

7100

, 2.0

6700

, 2.5

6500

, 2.5

6300

, 3.0

6100

, 3.5

5950

, 3.5

5750

, 4.0

5600

, 4.0

5450

, 4.5

5300

, 4.5

5200

, 5.0

5100

, 5.0

F200

9250

, 2.0

8800

, 2.5

8450

, 3.0

8050

, 3.0

7900

, 3.5

7700

, 4.0

7500

, 4.5

7350

, 5.0

7200

, 5.5

7050

, 5.5

6950

, 6.0

6850

, 6.5

6700

, 6.5

N3

F100

5400

, 2.0

4900

, 2.5

4550

, 2.5

4250

, 3.0

4050

, 3.0

3850

, 3.5

3700

, 3.5

3550

, 4.0

3400

, 4.0

3250

, 4.5

3150

, 4.5

3000

, 4.5

2900

, 5.0

F150

7500

, 2.5

7100

, 3.0

6750

, 3.5

6500

, 4.5

6250

, 5.0

5950

, 5.0

5700

, 5.5

5500

, 6.0

5350

, 6.5

5150

, 6.5

4900

, 7.0

4750

, 7.0

4600

, 7.5

F200

9250

, 3.0

8800

, 4.0

8450

, 4.5

8050

, 5.0

7900

, 6.0

7700

, 6.5

7500

, 7.0

7350

, 8.0

7200

, 8.5

7050

, 9.0

6950

, 9.5

6750

, 10.

065

50, 1

0.5

N4

F100

4650

, 2.5

4200

, 3.0

3900

, 3.5

3650

, 3.5

3450

, 4.0

3250

, 4.5

3050

, 4.5

2900

, 5.0

2750

, 5.0

2650

, 5.5

2550

, 5.5

2450

, 5.5

2350

, 6.0

F150

7200

, 3.5

6500

, 4.5

6000

, 5.0

5600

, 5.5

5300

, 6.0

5100

, 6.5

4800

, 7.0

4550

, 7.5

4300

, 8.0

4150

, 8.0

4000

, 8.5

3850

, 9.0

3700

, 9.0

F200

9250

, 4.5

8800

, 5.5

8450

, 7.0

7900

, 7.5

7500

, 8.5

7150

, 9.5

6850

, 10.

065

00, 1

0.5

6200

, 11.

059

00, 1

1.5

5700

, 12.

054

50, 1

2.5

5300

, 13.

0

2 s

ides

N1

/ N

2F1

00

4850

, 2.0

4400

, 2.5

4050

, 3.0

3800

, 3.5

3600

, 3.5

3450

, 4.0

3300

, 4.5

3150

, 4.5

3000

, 5.0

2850

, 5.0

2700

, 5.0

2650

, 5.5

2550

, 5.5

F150

7500

, 3.0

6800

, 4.0

6300

, 4.5

5900

, 5.0

5600

, 5.5

5350

, 6.0

5050

, 6.5

4950

, 7.0

4700

, 7.5

4500

, 7.5

4300

, 8.0

4150

, 8.0

4000

, 8.5

F200

9250

, 4.0

8800

, 5.0

8450

, 6.0

8050

, 6.5

7850

, 7.5

7450

, 8.5

7150

, 9.0

6900

, 9.5

6700

, 10.

063

00, 1

0.5

6150

, 11.

059

00, 1

1.5

5700

, 12.

0

N3

F100

4150

, 3.0

3750

, 3.5

3450

, 4.0

3200

, 4.5

2950

, 4.5

2750

, 5.0

2600

, 5.5

2450

, 5.5

2350

, 6.0

2250

, 6.0

2150

, 6.5

2100

, 6.5

2000

, 7.0

F150

6400

, 4.5

5800

, 5.0

5350

, 6.0

5050

, 7.0

4700

, 7.5

4200

, 7.5

4050

, 8.0

3850

, 8.5

3700

, 9.0

3550

, 9.5

3400

, 10.

033

00, 1

0.5

3150

, 10.

5

F200

9000

, 6.0

8100

, 7.0

7500

, 8.5

7050

, 9.5

6550

, 10.

062

00, 1

1.0

5850

, 11.

555

50, 1

2.0

5300

, 13.

050

50, 1

3.5

4850

, 14.

047

00, 1

4.5

4500

, 15.

0

N4

F100

3500

, 3.5

3200

, 4.5

2850

, 5.0

2600

, 5.5

2400

, 5.5

2250

, 6.0

2100

, 6.5

2000

, 7.0

1800

, 6.5

1650

, 6.5

1500

, 6.5

1400

, 6.5

1300

, 6.5

F150

5500

, 5.5

5000

, 6.5

4500

, 7.5

4100

, 8.5

3800

, 9.0

3500

, 9.5

3350

, 10.

031

50, 1

0.5

2850

, 10.

526

00, 1

0.5

2400

, 10.

522

00, 1

0.5

2050

, 10.

5

F200

7750

, 7.5

7000

, 9.5

6400

, 10.

558

50, 1

1.5

5400

, 12.

550

50, 1

3.5

4750

, 14.

045

00, 1

5.0

4300

, 15.

541

00, 1

6.5

3850

, 16.

535

50, 1

6.5

3300

, 16.

5

3 s

ides

N1

/ N

2F1

0045

00, 2

.541

00, 3

.038

00, 3

.534

00, 3

.533

50, 4

.032

00, 4

.529

50, 4

.528

50, 5

.027

00, 5

.026

00, 5

.525

00, 5

.524

00, 6

.023

00, 6

.0

F150

7000

, 3.5

6350

, 4.5

5800

, 5.0

5500

, 5.5

5200

, 6.0

4950

, 7.0

4750

, 7.5

4500

, 7.5

4250

, 8.0

4100

, 8.5

3950

, 8.5

3800

, 9.0

3650

, 9.5

F200

9250

, 4.5

8800

, 6.0

8200

, 7.0

7650

, 7.5

7300

, 8.5

6950

, 9.5

6700

, 10.

064

00, 1

0.5

6100

, 11.

558

00, 1

1.5

5600

, 12.

054

00, 1

2.5

5200

, 13.

0

N3

F100

3850

, 3.5

3500

, 4.0

3200

, 4.5

2900

, 5.0

2700

, 5.0

2500

, 5.5

2350

, 6.0

2250

, 6.0

2150

, 6.5

1950

, 6.5

1900

, 6.5

1750

, 6.5

1650

, 7.0

F150

6000

, 5.0

5400

, 6.0

5000

, 7.0

4600

, 7.5

4250

, 8.0

4000

, 8.5

3750

, 9.0

3550

, 9.5

3400

, 10.

032

50, 1

0.5

3000

, 10.

528

00, 1

0.5

2600

, 10.

5

F200

8400

, 6.5

7600

, 8.0

7000

, 9.5

6550

, 10.

559

50, 1

1.0

5650

, 12.

053

50, 1

3.0

5050

, 13.

548

00, 1

4.0

4600

, 14.

544

00, 1

5.0

4250

, 16.

041

00, 1

6.5

N4

F100

3350

, 4.0

2900

, 5.0

2600

, 5.5

2350

, 6.0

2200

, 6.5

2050

, 6.5

1850

, 7.0

1650

, 7.0

1500

, 7.0

1350

, 6.5

1250

, 6.5

1150

, 6.5

1100

, 7.0

F150

5100

, 6.0

4600

, 7.5

4100

, 8.5

3750

, 9.0

3450

, 9.5

3250

, 10.

529

00, 1

0.5

2600

, 10.

523

50, 1

0.5

2150

, 10.

520

00, 1

0.5

1850

, 10.

517

00, 1

0.5

F200

7250

, 8.5

6550

, 10.

558

50, 1

1.5

5300

, 12.

549

00, 1

3.5

4600

, 14.

543

50, 1

5.5

4100

, 16.

537

50, 1

6.5

3450

, 16.

532

00, 1

6.5

2950

, 16.

527

50, 1

6.5

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

head

beam

span

in m

m, t

he 2

nd v

alue

in th

e ta

ble

is th

e te

nsile

reac

tion

(kN

) on

the

supp

ort (

post

).3.

The

pos

t rea

ctio

n is

base

d on

1 h

eadb

eam

span

and

2 su

ppor

ts. F

or 2

or m

ore

simpl

y sp

an h

eadb

eam

s, d

oubl

e (2

x) th

e po

st re

actio

n fo

r int

erna

l pos

ts.

4. H

eadb

eam

span

= sp

acin

g of

supp

orts

.5.

Atta

chm

ent l

oad

is th

e un

iform

ly d

esig

n di

strib

uted

load

in k

N/m

act

ing

on th

e at

tach

men

t stru

ctur

e e.

g. e

xist

ing

wal

l.

Dia

gra

m 2

B

Hea

d be

am,n

o ra

fters

pos

t bol

ted

behi

nd.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A r a

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

19FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

Tab

le 2

C

Hea

dbea

m S

pan

and

Reac

tion,

Spa

n Ty

pe: D

oubl

e/M

ultip

le C

ontin

uous

, Con

nect

ion:

Bol

ted,

Sup

porti

ng: S

heet

ing,

Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Hea

db

eam

Lo

ad W

idth

(mm

)

≤ 9

00

120

015

00

180

02

100

24

00

27

00

30

00

33

00

36

00

39

00

42

00

45

00

0/1

/4 s

ides

N1

/ N

2F1

0069

50, 3

.5

6350

, 4.5

56

50, 4

.5

5050

, 5.0

47

00, 5

.5

4350

, 6.0

41

00, 6

.0

3850

, 6.5

36

50, 6

.5

3450

, 7.0

33

00, 7

.0

3150

, 7.5

29

50, 7

.5

F150

9350

, 4.5

88

50, 5

.5

8450

, 7.0

80

00, 8

.0

7300

, 8.5

67

50, 9

.0

6400

, 9.5

60

00, 1

0.0

5700

, 10.

5 54

00, 1

0.5

5150

, 11.

0 49

00, 1

1.5

4700

, 11.

5

F200

1150

0, 5

.0

1100

0, 7

.0

1060

0, 8

.5

1020

0, 9

.5

9900

, 11.

0 96

50, 1

2.5

9150

, 13.

0 86

50, 1

4.0

8200

, 14.

5 77

00, 1

5.0

7450

, 15.

5 70

50, 1

6.0

6600

, 16.

0

N3

F100

6350

, 5.0

54

00, 6

.0

4750

, 6.5

43

00, 7

.0

3900

, 7.5

36

00, 8

.0

3350

, 8.0

31

50, 8

.5

2950

, 9.0

28

00, 9

.0

2600

, 9.0

25

00, 9

.5

2400

, 9.5

F150

9350

, 7.5

86

00, 9

.0

7550

, 10.

0 68

00, 1

1.0

6200

, 11.

5 57

00, 1

2.0

5250

, 12.

5 49

50, 1

3.0

4650

, 13.

5 44

00, 1

4.0

4100

, 14.

0 40

00, 1

5.0

3800

, 15.

0

F200

1155

0, 9

.0

1100

0, 1

1.5

1060

0, 1

3.5

9800

, 15.

0 90

00, 1

6.5

8300

, 17.

5 77

50, 1

8.5

7250

, 19.

0 66

00, 1

9.0

5950

, 19.

0 55

50, 1

9.0

5150

, 19.

0 48

00, 1

9.0

N4

F100

5050

, 6.0

42

50, 7

.0

3750

, 7.5

33

50, 8

.0

3000

, 8.5

27

50, 9

.0

2450

, 9.0

24

00, 1

0.0

2250

, 10.

0 21

00, 1

0.5

1950

, 10.

5 18

50, 1

0.5

1700

, 10.

5

F150

7950

, 9.5

67

50, 1

1.0

5900

, 12.

0 52

50, 1

2.5

4750

, 13.

5 43

50, 1

4.0

4050

, 15.

0 37

50, 1

5.0

3500

, 15.

5 33

00, 1

6.0

3100

, 16.

5 29

50, 1

6.5

2800

, 17.

0

F200

1155

0, 1

3.5

9750

, 15.

5 85

50, 1

7.0

7700

, 18.

5 68

50, 1

9.0

5850

, 18.

5 53

00, 1

9.0

4750

, 19.

0 43

00, 1

9.0

3950

, 19.

0 36

00, 1

9.0

3300

, 18.

5 31

50, 1

9.0

2 s

ides

N1

/ N

2F1

00

5500

, 6.0

46

50, 6

.5

4100

, 7.0

36

50, 7

.5

3350

, 8.0

30

50, 8

.5

2850

, 9.0

26

50, 9

.5

2500

, 9.5

23

50, 1

0.0

2200

, 10.

0 21

00, 1

0.5

2000

, 10.

5

F150

8700

, 9.0

74

00, 1

0.0

6450

, 11.

0 58

00, 1

2.0

5250

, 12.

5 48

50, 1

3.5

4500

, 14.

0 42

00, 1

4.5

3900

, 15.

0 37

00, 1

5.5

3500

, 15.

5 33

00, 1

6.0

3100

, 16.

0

F200

1155

0, 1

1.5

1070

0, 1

4.5

9400

, 16.

0 84

50, 1

7.0

7700

, 18.

5 70

00, 1

9.0

6200

, 19.

0 55

50, 1

9.0

5050

, 19.

0 46

50, 1

9.0

4250

, 19.

0 39

50, 1

9.0

3700

, 19.

0

N3

F100

4200

, 7.0

35

50, 8

.0

3100

, 8.5

27

50, 9

.0

2450

, 9.5

22

50, 1

0.0

2050

, 10.

5 19

00, 1

0.5

1700

, 10.

5 15

50, 1

0.5

1450

, 10.

5 13

50, 1

0.5

1250

, 10.

5

F150

6650

, 11.

0 56

00, 1

2.5

4800

, 13.

0 43

00, 1

4.0

3900

, 15.

0 35

50, 1

5.5

3250

, 16.

0 30

00, 1

6.5

2800

, 17.

0 26

00, 1

7.0

2450

, 17.

5 22

50, 1

7.5

2100

, 17.

5

F200

9650

, 15.

5 81

50, 1

7.5

7050

, 19.

0 58

00, 1

9.0

5000

, 19.

0 43

50, 1

9.0

3850

, 19.

0 35

00, 1

9.0

3150

, 19.

0 29

00, 1

9.0

2650

, 19.

0 24

50, 1

9.0

2300

, 19.

0

N4

F100

3300

, 8.5

27

50, 9

.0

2350

, 10.

0 20

50, 1

0.5

1800

, 10.

5 15

50, 1

0.5

1350

, 10.

0 12

50, 1

0.5

1150

, 10.

5 10

50, 1

0.5

950,

10.

5 90

0, 1

0.5

800,

10.

0

F150

4950

, 12.

5 42

00, 1

4.0

3700

, 15.

5 32

50, 1

6.0

2900

, 17.

0 26

00, 1

7.0

2350

, 17.

5 21

00, 1

7.5

1900

, 17.

5 17

50, 1

7.5

1600

, 17.

5 15

00, 1

7.5

1400

, 17.

5

F200

7550

, 18.

5 58

50, 1

9.0

4650

, 19.

0 38

50, 1

9.0

3300

, 19.

0 29

00, 1

9.0

2550

, 19.

0 23

00, 1

9.0

2100

, 19.

0 19

00, 1

9.0

1750

, 19.

0 16

00, 1

8.5

1500

, 18.

5

3 s

ides

N1

/ N

2F1

0049

00, 6

.0

4150

, 7.0

36

50, 7

.5

3250

, 8.5

29

50, 9

.0

2700

, 9.0

24

50, 9

.5

2350

, 10.

0 22

00, 1

0.0

2050

, 10.

5 19

00, 1

0.5

1750

, 10.

5 16

50, 1

0.5

F150

7800

, 9.5

66

00, 1

1.0

5750

, 12.

0 51

50, 1

3.0

4650

, 13.

5 43

00, 1

4.5

3950

, 15.

0 37

00, 1

5.5

3450

, 16.

0 32

50, 1

6.5

3050

, 16.

5 29

00, 1

7.0

2750

, 17.

5

F200

1130

0, 1

3.5

9600

, 15.

5 82

50, 1

7.0

7550

, 18.

5 66

00, 1

9.0

5750

, 19.

0 51

00, 1

9.0

4600

, 19.

0 41

50, 1

9.0

3800

, 19.

0 35

00, 1

9.0

3200

, 18.

5 30

50, 1

9.0

N3

F100

3750

, 7.5

30

50, 8

.0

2750

, 9.0

24

00, 9

.5

2150

, 10.

0 19

50, 1

0.5

1750

, 10.

5 15

50, 1

0.5

1400

, 10.

5 13

00, 1

0.5

1200

, 10.

5 11

00, 1

0.5

1050

, 10.

5

F150

5950

, 12.

0 50

00, 1

3.0

4300

, 14.

0 38

00, 1

5.0

3350

, 15.

5 30

50, 1

6.0

2850

, 17.

0 26

00, 1

7.5

2400

, 17.

5 22

00, 1

7.5

2000

, 17.

5 18

50, 1

7.0

1750

, 17.

5

F200

8650

, 17.

0 73

00, 1

9.0

5800

, 19.

0 48

50, 1

9.0

4150

, 19.

0 36

00, 1

9.0

3200

, 19.

0 28

50, 1

9.0

2600

, 19.

0 24

00, 1

9.0

2200

, 19.

0 20

50, 1

9.0

1900

, 19.

0

N4

F100

2900

, 9.0

24

00, 9

.5

2050

, 10.

5 17

50, 1

0.5

1500

, 10.

5 13

00, 1

0.5

1150

, 10.

5 10

50, 1

0.5

950,

10.

5 85

0, 1

0.5

800,

10.

5 75

0, 1

0.5

700,

10.

5

F150

4600

, 13.

5 38

00, 1

5.0

3250

, 16.

0 28

50, 1

7.0

2500

, 17.

5 21

50, 1

7.0

1900

, 17.

0 17

50, 1

7.5

1550

, 17.

0 14

50, 1

7.5

1350

, 17.

5 12

50, 1

7.5

1150

, 17.

0

F200

6500

, 19.

0 48

50, 1

9.0

3850

, 19.

0 32

00, 1

9.0

2750

, 19.

0 24

00, 1

9.0

2100

, 19.

0 19

00, 1

9.0

1700

, 18.

5 15

50, 1

8.5

1450

, 19.

0 13

50, 1

9.0

1200

, 18.

0

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

purli

n sp

an in

mm

, the

2nd

val

ue in

the

tabl

e is

the

tens

ile re

actio

n (k

N) o

n th

e su

ppor

t (po

st).

3. T

he p

ost r

eact

ions

in Ta

ble

2C a

re b

ased

on

the

reac

tion

in a

n in

tern

al su

ppor

t of a

2 e

qual

con

tinuo

us sp

ans w

ith 3

supp

orts

. For

end

pos

ts, m

ultip

ly th

e po

st re

actio

n in

tabl

e 2C

by

0.4.

4. H

eadb

eam

span

= sp

acin

g of

supp

orts

.5.

Atta

chm

ent l

oad

is th

e un

iform

ly d

esig

n di

strib

uted

load

in k

N/m

act

ing

on th

e at

tach

men

t stru

ctur

e e.

g. e

xist

ing

wal

l.6.

Val

ues f

rom

1 si

ded

bloc

ked

can

be c

onse

rvat

ivel

y us

ed fo

r 0 a

nd 4

side

s win

d bl

ocki

ng.

Dia

gra

m 2

C

Con

tinuo

us h

eadb

eam

, pos

t bol

ted

behi

nd.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

20FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

Tab

le 3

A

Rafte

r Spa

n an

d Re

actio

n, S

pan

Type

: Sim

ply

Supp

orte

d, C

onne

ctio

n: B

rack

et O

r Bol

ted,

Sup

porti

ng: 1

Pur

lin, F

lat S

truct

ure

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Raf

ter L

oad

Wid

th (m

m)

≤ 12

00

150

018

00

210

02

40

02

70

03

00

03

30

03

60

03

90

04

20

04

50

04

80

0

0/1

/4 s

ides

N1

/ N

2F1

0051

50, 1

.048

50, 1

.045

50, 1

.043

50, 1

.041

50, 1

.540

00, 1

.539

00, 1

.537

50, 1

.536

50, 1

.535

50, 1

.534

50, 1

.533

50, 2

.032

50, 2

.0

F150

7300

, 1.0

6950

, 1.5

6700

, 1.5

6500

, 1.5

6300

, 2.0

6150

, 2.0

6000

, 2.0

5800

, 2.0

5650

, 2.5

5500

, 2.5

5400

, 2.5

5250

, 2.5

5100

, 3.0

F200

9050

, 1.0

8700

, 1.5

8400

, 1.5

8150

, 2.0

7950

, 2.0

7750

, 2.5

7600

, 2.5

7450

, 2.5

7300

, 3.0

7150

, 3.0

7050

, 3.5

6950

, 3.5

6850

, 3.5

N3

F100

5150

, 1.5

4850

, 1.5

4550

, 1.5

4300

, 2.0

4050

, 2.0

3800

, 2.0

3600

, 2.0

3450

, 2.0

3300

, 2.5

3150

, 2.5

3050

, 2.5

2950

, 2.5

2850

, 2.5

F150

7300

, 1.5

6950

, 2.0

6700

, 2.5

6500

, 2.5

6150

, 2.5

5800

, 3.0

5550

, 3.0

5300

, 3.0

5100

, 3.5

4900

, 3.5

4750

, 3.5

4600

, 4.0

4450

, 4.0

F200

9050

, 2.0

8700

, 2.5

8400

, 2.5

8150

, 3.0

7950

, 3.5

7750

, 3.5

7550

, 4.0

7200

, 4.0

6950

, 4.5

6700

, 4.5

6500

, 5.0

6300

, 5.0

6100

, 5.0

N4

F100

4550

, 1.5

4150

, 2.0

3750

, 2.0

3500

, 2.0

3250

, 2.5

3050

, 2.5

2900

, 2.5

2800

, 2.5

2650

, 2.5

2500

, 3.0

2350

, 3.0

2150

, 3.0

2050

, 3.0

F150

6950

, 2.5

6300

, 2.5

5750

, 3.0

5350

, 3.0

5050

, 3.5

4750

, 3.5

4550

, 4.0

4350

, 4.0

4150

, 4.0

4000

, 4.5

3850

, 4.5

3750

, 4.5

3600

, 5.0

F200

9050

, 3.0

8500

, 3.5

7850

, 4.0

7300

, 4.0

6900

, 4.5

6550

, 5.0

6250

, 5.0

5950

, 5.5

5750

, 5.5

5500

, 6.0

5350

, 6.0

5150

, 6.5

5000

, 6.5

2 s

ides

N1

/ N

2F1

00

4800

, 1.5

4450

, 1.5

4100

, 2.0

3800

, 2.0

3550

, 2.0

3350

, 2.5

3150

, 2.5

3000

, 2.5

2900

, 2.5

2750

, 2.5

2650

, 2.5

2550

, 3.0

2400

, 3.0

F150

7300

, 2.0

6750

, 2.5

6200

, 2.5

5800

, 3.0

5450

, 3.0

5150

, 3.5

4900

, 3.5

4700

, 3.5

4500

, 4.0

4350

, 4.0

4200

, 4.0

4050

, 4.5

3900

, 4.5

F200

9050

, 2.5

8700

, 3.0

8400

, 3.5

7850

, 4.0

7400

, 4.0

7000

, 4.5

6700

, 4.5

6400

, 5.0

6150

, 5.0

5950

, 5.5

5750

, 5.5

5550

, 6.0

5400

, 6.0

N3

F100

3950

, 2.0

3550

, 2.0

3200

, 2.5

3000

, 2.5

2800

, 2.5

2650

, 3.0

2400

, 3.0

2150

, 3.0

2000

, 3.0

1850

, 3.0

1700

, 3.0

1600

, 3.0

1500

, 3.0

F150

6050

, 3.0

5450

, 3.0

5000

, 3.5

4650

, 3.5

4350

, 4.0

4100

, 4.0

3900

, 4.5

3750

, 4.5

3600

, 5.0

3450

, 5.0

3300

, 5.0

3100

, 5.0

2900

, 5.0

F200

8200

, 3.5

7400

, 4.0

6850

, 4.5

6350

, 5.0

6000

, 5.5

5650

, 5.5

5400

, 6.0

5150

, 6.5

4950

, 6.5

4800

, 7.0

4450

, 7.0

4200

, 7.0

3900

, 7.0

N4

F100

3200

, 2.5

2850

, 2.5

2600

, 3.0

2250

, 3.0

1950

, 3.0

1750

, 3.0

1600

, 3.0

1450

, 3.0

1300

, 2.5

1200

, 2.5

1150

, 3.0

1050

, 3.0

1000

, 3.0

F150

5000

, 3.5

4500

, 4.0

4100

, 4.0

3800

, 4.5

3550

, 5.0

3350

, 5.0

3100

, 5.5

2800

, 5.0

2550

, 5.0

2350

, 5.0

2200

, 5.0

2050

, 5.0

1950

, 5.5

F200

6800

, 4.5

6150

, 5.0

5650

, 5.5

5250

, 6.0

4950

, 6.5

4600

, 7.0

4150

, 7.0

3800

, 7.0

3450

, 7.0

3200

, 7.0

2950

, 7.0

2750

, 7.0

2600

, 7.0

3 s

ides

N1

/ N

2F1

0044

50, 1

.540

50, 2

.037

00, 2

.034

50, 2

.032

00, 2

.530

00, 2

.528

50, 2

.527

50, 2

.526

00, 3

.024

00, 3

.022

50, 3

.021

00, 3

.019

50, 3

.0

F150

6850

, 2.5

6200

, 2.5

5700

, 3.0

5300

, 3.0

4950

, 3.5

4700

, 3.5

4450

, 4.0

4250

, 4.0

4100

, 4.0

3950

, 4.5

3800

, 4.5

3650

, 4.5

3550

, 5.0

F200

9050

, 3.0

8400

, 3.5

7750

, 4.0

7200

, 4.0

6800

, 4.5

6450

, 5.0

6150

, 5.0

5850

, 5.5

5650

, 5.5

5450

, 6.0

5250

, 6.0

5100

, 6.5

4950

, 6.5

N3

F100

3600

, 2.0

3200

, 2.5

2950

, 2.5

2700

, 2.5

2450

, 3.0

2200

, 3.0

1950

, 3.0

1800

, 3.0

1650

, 3.0

1500

, 2.5

1400

, 3.0

1300

, 2.5

1250

, 3.0

F150

5550

, 3.0

5000

, 3.5

4550

, 4.0

4250

, 4.0

4000

, 4.5

3750

, 4.5

3550

, 5.0

3400

, 5.0

3200

, 5.0

2950

, 5.0

2750

, 5.0

2550

, 5.0

2400

, 5.0

F200

7550

, 4.0

6800

, 4.5

6250

, 5.0

5850

, 5.5

5500

, 6.0

5200

, 6.5

4950

, 6.5

4700

, 7.0

4300

, 7.0

4000

, 7.0

3700

, 7.0

3450

, 7.0

3250

, 7.0

N4

F100

2900

, 2.5

2600

, 3.0

2200

, 3.0

1850

, 3.0

1650

, 3.0

1450

, 3.0

1300

, 3.0

1200

, 3.0

1100

, 3.0

1000

, 3.0

950,

3.0

850,

2.5

800,

2.5

F150

4550

, 4.0

4100

, 4.0

3750

, 4.5

3450

, 5.0

3200

, 5.0

2850

, 5.0

2550

, 5.0

2300

, 5.0

2150

, 5.5

1950

, 5.0

1800

, 5.0

1700

, 5.0

1600

, 5.0

F200

6250

, 5.0

5650

, 5.5

5200

, 6.5

4850

, 7.0

4300

, 7.0

3850

, 7.0

3450

, 7.0

3150

, 7.0

2850

, 7.0

2650

, 7.0

2450

, 7.0

2300

, 7.0

2150

, 7.0

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

rafte

r spa

n in

mm

, the

2nd

val

ue in

the

tabl

e is

the

tens

ile re

actio

n (k

N) o

n th

e su

ppor

t (po

st).

3. T

he su

ppor

t rea

ctio

n is

base

d on

1 ra

fter s

pan

and

2 su

ppor

ts.

4. R

afte

r spa

n =

spac

ing

of su

ppor

ts.

Dia

gra

m 3

A

Rafte

r sup

porti

ng o

ne p

urlin

.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

21FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

Tab

le 3

B

Rafte

r Spa

n an

d Re

actio

n, S

pan

Type

: Sim

ply

Supp

orte

d, C

onne

ctio

n: B

rack

et O

r Bol

ted,

Sup

porti

ng: 2

Pur

lins,

Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Raf

ter L

oad

Wid

th (m

m)

≤ 12

00

150

018

00

210

02

40

02

70

03

00

03

30

03

60

03

90

04

20

04

50

04

80

0

0/1

/4 s

ides

N1

/ N

2F1

0049

00, 1

.045

50, 1

.043

00, 1

.541

00, 1

.539

00, 1

.537

50, 1

.536

50, 1

.535

00, 2

.034

00, 2

.033

00, 2

.032

50, 2

.031

50, 2

.031

00, 2

.0

F150

7050

, 1.5

6700

, 1.5

6450

, 2.0

6250

, 2.0

6050

, 2.0

5850

, 2.5

5650

, 2.5

5500

, 2.5

5350

, 3.0

5200

, 3.0

5100

, 3.0

4950

, 3.5

4850

, 3.5

F200

8800

, 1.5

8450

, 2.0

8150

, 2.0

7900

, 2.5

7700

, 2.5

7500

, 3.0

7300

, 3.0

7150

, 3.5

7000

, 3.5

6900

, 4.0

6800

, 4.0

6650

, 4.5

6550

, 4.5

N3

F100

4900

, 1.5

4550

, 2.0

4300

, 2.0

4100

, 2.0

3900

, 2.5

3750

, 2.5

3650

, 2.5

3500

, 3.0

3400

, 3.0

3300

, 3.0

3250

, 3.5

3150

, 3.5

3050

, 3.5

F150

7050

, 2.0

6700

, 2.5

6450

, 3.0

6250

, 3.0

6050

, 3.5

5850

, 4.0

5650

, 4.0

5500

, 4.5

5350

, 4.5

5200

, 5.0

5100

, 5.0

4950

, 5.5

4800

, 5.5

F200

8800

, 2.5

8450

, 3.0

8150

, 3.5

7900

, 4.0

7700

, 4.5

7500

, 5.0

7300

, 5.0

7150

, 5.5

7000

, 6.0

6900

, 6.5

6800

, 6.5

6650

, 7.0

6550

, 7.5

N4

F100

4400

, 2.0

4100

, 2.5

3850

, 2.5

3650

, 3.0

3500

, 3.0

3300

, 3.5

3100

, 3.5

2950

, 3.5

2850

, 4.0

2750

, 4.0

2650

, 4.0

2550

, 4.0

2450

, 4.5

F150

6800

, 3.0

6250

, 3.5

5900

, 4.0

5600

, 4.5

5350

, 4.5

5150

, 5.0

4900

, 5.5

4650

, 5.5

4450

, 6.0

4300

, 6.0

4150

, 6.5

4000

, 6.5

3850

, 6.5

F200

8800

, 4.0

8450

, 4.5

8150

, 5.5

7800

, 6.0

7450

, 6.5

7150

, 7.0

6850

, 7.5

6550

, 7.5

6250

, 8.0

6050

, 8.5

5800

, 8.5

5650

, 9.0

5450

, 9.5

2 s

ides

N1

/ N

2F1

00

4600

, 2.0

4250

, 2.0

4000

, 2.5

3800

, 2.5

3650

, 3.0

3500

, 3.0

3400

, 3.0

3250

, 3.5

3100

, 3.5

2950

, 3.5

2850

, 4.0

2750

, 4.0

2700

, 4.0

F150

7050

, 2.5

6600

, 3.0

6150

, 3.5

5850

, 4.0

5600

, 4.0

5350

, 4.5

5200

, 5.0

5000

, 5.0

4850

, 5.5

4650

, 5.5

4500

, 6.0

4350

, 6.0

4200

, 6.0

F200

8800

, 3.0

8450

, 4.0

8150

, 4.5

7900

, 5.0

7700

, 5.5

7500

, 6.0

7200

, 6.5

7000

, 7.0

6750

, 7.5

6500

, 7.5

6300

, 8.0

6100

, 8.5

5900

, 8.5

N3

F100

3900

, 2.5

3650

, 3.0

3400

, 3.0

3200

, 3.5

3000

, 3.5

2800

, 4.0

2650

, 4.0

2550

, 4.0

2450

, 4.5

2350

, 4.5

2250

, 4.5

2200

, 5.0

2100

, 5.0

F150

6050

, 3.5

5600

, 4.0

5250

, 4.5

5000

, 5.0

4700

, 5.5

4400

, 6.0

4200

, 6.0

4000

, 6.5

3800

, 6.5

3650

, 7.0

3550

, 7.5

3400

, 7.5

3300

, 8.0

F200

8450

, 5.0

7800

, 5.5

7350

, 6.5

6950

, 7.0

6550

, 7.5

6200

, 8.0

5900

, 8.5

5650

, 9.0

5400

, 9.5

5200

, 10.

050

00, 1

0.0

4800

, 10.

546

50, 1

1.0

N4

F100

3400

, 3.0

3050

, 3.5

2800

, 4.0

2600

, 4.0

2400

, 4.5

2300

, 4.5

2150

, 5.0

2050

, 5.0

1950

, 5.5

1850

, 5.5

1700

, 5.5

1600

, 5.5

1500

, 5.5

F150

5200

, 4.5

4800

, 5.5

4400

, 6.0

4050

, 6.5

3800

, 7.0

3600

, 7.0

3400

, 7.5

3250

, 8.0

3100

, 8.0

3000

, 8.5

2900

, 9.0

2800

, 9.5

2700

, 9.5

F200

7250

, 6.5

6750

, 7.5

6200

, 8.0

5750

, 9.0

5350

, 9.5

5050

, 10.

048

00, 1

0.5

4600

, 11.

044

00, 1

1.5

4200

, 12.

040

50, 1

2.5

3950

, 13.

038

00, 1

3.5

3 s

ides

N1

/ N

2F1

0043

00, 2

.039

50, 2

.537

50, 2

.535

50, 3

.034

00, 3

.032

50, 3

.530

50, 3

.529

50, 3

.528

00, 4

.027

00, 4

.026

00, 4

.025

00, 4

.524

50, 4

.5

F150

6600

, 3.0

6100

, 3.5

5750

, 4.0

5450

, 4.5

5200

, 4.5

5000

, 5.0

4800

, 5.5

4600

, 5.5

4400

, 6.0

4200

, 6.0

4050

, 6.5

3950

, 6.5

3800

, 7.0

F200

8800

, 4.0

8450

, 4.5

8050

, 5.5

7600

, 6.0

7250

, 6.5

6950

, 7.0

6700

, 7.5

6450

, 8.0

6150

, 8.0

5950

, 8.5

5750

, 9.0

5550

, 9.0

5350

, 9.5

N3

F100

3650

, 2.5

3400

, 3.0

3150

, 3.5

2900

, 3.5

2700

, 4.0

2550

, 4.0

2400

, 4.5

2300

, 4.5

2200

, 5.0

2100

, 5.0

2050

, 5.0

2000

, 5.5

1850

, 5.5

F150

5650

, 4.0

5200

, 4.5

4900

, 5.5

4550

, 5.5

4250

, 6.0

4000

, 6.5

3800

, 7.0

3650

, 7.0

3500

, 7.5

3350

, 7.5

3200

, 8.0

3100

, 8.0

3000

, 8.5

F200

7900

, 5.5

7300

, 6.5

6850

, 7.5

6400

, 8.0

6000

, 8.5

5650

, 9.0

5350

, 9.5

5100

, 10.

049

00, 1

0.5

4700

, 11.

045

50, 1

1.0

4400

, 11.

542

50, 1

2.0

N4

F100

3100

, 3.5

2800

, 4.0

2550

, 4.0

2350

, 4.5

2200

, 5.0

2100

, 5.0

1950

, 5.5

1800

, 5.5

1650

, 5.5

1500

, 5.5

1400

, 5.5

1300

, 5.0

1250

, 5.5

F150

4850

, 5.5

4400

, 6.0

4000

, 6.5

3700

, 7.0

3450

, 7.5

3250

, 8.0

3100

, 8.5

2950

, 8.5

2850

, 9.0

2700

, 9.5

2600

, 9.5

2550

, 10.

024

00, 1

0.0

F200

6800

, 7.0

6200

, 8.0

5650

, 9.0

5250

, 10.

049

00, 1

0.5

4600

, 11.

044

00, 1

1.5

4200

, 12.

040

00, 1

2.5

3850

, 13.

037

00, 1

3.5

3450

, 13.

532

50, 1

3.5

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

rafte

r spa

n in

mm

, the

2nd

val

ue in

the

tabl

e is

the

tens

ile re

actio

n (k

N) o

n th

e su

ppor

t (po

st).

3. T

he su

ppor

t rea

ctio

n is

base

d on

1 p

urlin

span

and

2 su

ppor

ts.

4. R

afte

r spa

n =

spac

ing

of su

ppor

ts.

Dia

gra

m 3

B

Rafte

r sup

porti

ng tw

o pu

rlins

.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

22FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

Tab

le 3

C

Rafte

r Spa

n An

d Re

actio

n, S

pan

Type

: Dou

ble/

Mul

tiple

Con

tinuo

us, C

onne

ctio

n: B

olte

d, S

uppo

rting

: 1 P

urlin

, Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Raf

ter L

oad

Wid

th (m

m)

≤ 12

00

150

018

00

210

02

40

02

70

03

00

03

30

03

60

03

90

04

20

04

50

04

80

0

0/1

/4 s

ides

N1

/ N

2F1

0066

00, 2

.563

00, 3

.058

50, 3

.054

50, 3

.551

00, 3

.547

50, 4

.045

00, 4

.043

00, 4

.541

00, 4

.539

00, 4

.537

50, 4

.536

50, 5

.035

00, 5

.0

F150

9000

, 3.0

8600

, 3.5

8250

, 4.5

8000

, 5.0

7700

, 5.5

7300

, 6.0

6950

, 6.0

6650

, 6.5

6400

, 7.0

6200

, 7.0

5950

, 7.5

5700

, 7.5

5500

, 8.0

F200

1115

0, 3

.510

750,

4.5

1035

0, 5

.010

050,

6.0

9800

, 6.5

9550

, 7.5

9300

, 8.0

8950

, 8.5

8600

, 9.0

8350

, 9.5

8050

, 9.5

7850

, 10.

076

00, 1

0.5

N3

F100

6200

, 3.5

5600

, 4.0

5050

, 4.5

4700

, 5.0

4350

, 5.0

4100

, 5.5

3900

, 5.5

3700

, 6.0

3500

, 6.0

3350

, 6.5

3250

, 6.5

3100

, 7.0

3000

, 7.0

F150

9000

, 5.0

8350

, 6.0

7700

, 6.5

7150

, 7.0

6750

, 8.0

6400

, 8.5

6050

, 8.5

5750

, 9.0

5500

, 9.5

5250

, 10.

050

50, 1

0.0

4850

, 10.

547

00, 1

1.0

F200

1115

0, 6

.010

750,

7.5

1025

0, 8

.596

00, 9

.590

50, 1

0.0

8600

, 11.

082

00, 1

1.5

7900

, 12.

576

00, 1

3.0

7300

, 13.

571

00, 1

4.0

6850

, 14.

566

50, 1

5.0

N4

F100

5050

, 4.5

4450

, 5.0

4050

, 5.5

3750

, 6.0

3500

, 6.5

3250

, 6.5

3100

, 7.0

2950

, 7.0

2700

, 7.0

2500

, 7.0

2350

, 7.5

2150

, 7.0

2050

, 7.5

F150

7600

, 6.5

6900

, 7.5

6350

, 8.5

5850

, 9.0

5450

, 9.5

5100

, 10.

048

00, 1

0.5

4550

, 11.

043

50, 1

1.5

4150

, 12.

040

00, 1

2.5

3800

, 12.

537

00, 1

3.0

F200

1015

0, 8

.592

50, 1

0.0

8550

, 11.

080

00, 1

2.0

7550

, 13.

071

50, 1

4.0

6800

, 15.

065

50, 1

5.5

6250

, 16.

559

50, 1

7.0

5750

, 17.

555

00, 1

8.0

5300

, 18.

5

2 s

ides

N1

/ N

2F1

00

5450

, 4.0

4850

, 4.5

4400

, 5.0

4050

, 5.5

3800

, 6.0

3550

, 6.0

3350

, 6.5

3200

, 6.5

3050

, 7.0

2900

, 7.0

2750

, 7.5

2550

, 7.0

2400

, 7.5

F150

8200

, 6.0

7400

, 7.0

6800

, 7.5

6350

, 8.5

5950

, 9.0

5550

, 9.5

5250

, 10.

050

00, 1

0.5

4750

, 10.

545

50, 1

1.0

4350

, 11.

542

00, 1

2.0

4050

, 12.

0

F200

1085

0, 8

.099

00, 9

.091

50, 1

0.0

8550

, 11.

081

00, 1

2.0

7650

, 12.

573

00, 1

3.5

7000

, 14.

567

50, 1

5.0

6500

, 15.

562

50, 1

6.0

6050

, 17.

058

00, 1

7.0

N3

F100

4250

, 5.0

3800

, 6.0

3450

, 6.5

3150

, 6.5

2950

, 7.0

2650

, 7.0

2400

, 7.5

2150

, 7.0

2000

, 7.5

1850

, 7.5

1700

, 7.0

1600

, 7.0

1500

, 7.0

F150

6600

, 8.0

5950

, 9.0

5400

, 9.5

4950

, 10.

546

00, 1

1.0

4300

, 11.

540

50, 1

2.0

3800

, 12.

536

50, 1

3.0

3450

, 13.

533

00, 1

4.0

3100

, 14.

029

00, 1

4.0

F200

8900

, 10.

581

00, 1

2.0

7450

, 13.

069

50, 1

4.5

6550

, 15.

561

50, 1

6.5

5800

, 17.

055

00, 1

8.0

5200

, 18.

548

00, 1

8.5

4450

, 18.

542

00, 1

8.5

3900

, 18.

5

N4

F100

3450

, 6.5

3050

, 7.0

2650

, 7.5

2250

, 7.0

1950

, 7.0

1750

, 7.0

1600

, 7.5

1450

, 7.5

1300

, 7.0

1200

, 7.0

1150

, 7.5

1050

, 7.0

1000

, 7.5

F150

5350

, 9.5

4750

, 10.

543

00, 1

1.5

3900

, 12.

536

00, 1

3.0

3350

, 13.

531

00, 1

4.0

2800

, 14.

025

50, 1

4.0

2350

, 14.

022

00, 1

4.0

2050

, 14.

019

50, 1

4.0

F200

7450

, 13.

067

50, 1

5.0

6150

, 16.

556

50, 1

7.5

5200

, 18.

546

00, 1

8.5

4150

, 18.

538

00, 1

9.0

3450

, 18.

532

00, 1

8.5

2950

, 18.

527

50, 1

8.5

2600

, 18.

5

3 s

ides

N1

/ N

2F1

0049

50, 4

.544

00, 5

.040

00, 5

.537

00, 6

.034

00, 6

.532

00, 6

.530

50, 7

.028

50, 7

.026

00, 7

.024

00, 7

.022

50, 7

.021

00, 7

.019

50, 7

.0

F150

7500

, 7.0

6800

, 7.5

6250

, 8.5

5750

, 9.0

5350

, 9.5

5000

, 10.

047

00, 1

0.5

4500

, 11.

542

50, 1

1.5

4050

, 12.

039

00, 1

2.5

3750

, 13.

036

00, 1

3.0

F200

1005

0, 9

.091

00, 1

0.0

8400

, 11.

078

50, 1

2.5

7400

, 13.

070

50, 1

4.0

6700

, 15.

064

50, 1

6.0

6150

, 16.

558

50, 1

7.0

5600

, 17.

554

00, 1

8.5

5150

, 18.

5

N3

F100

3850

, 5.5

3450

, 6.5

3100

, 7.0

2800

, 7.0

2450

, 7.0

2200

, 7.5

1950

, 7.0

1800

, 7.0

1650

, 7.0

1500

, 7.0

1400

, 7.0

1300

, 7.0

1250

, 7.5

F150

6050

, 8.5

5350

, 9.5

4850

, 10.

544

50, 1

1.5

4100

, 12.

038

50, 1

2.5

3600

, 13.

034

00, 1

3.5

3200

, 14.

029

50, 1

4.0

2750

, 14.

025

50, 1

4.0

2400

, 14.

0

F200

8200

, 11.

574

50, 1

3.0

6850

, 14.

564

00, 1

6.0

5950

, 17.

055

50, 1

8.0

5200

, 18.

547

00, 1

8.5

4300

, 18.

540

00, 1

8.5

3700

, 18.

534

50, 1

8.5

3250

, 18.

5

N4

F100

3100

, 7.0

2600

, 7.0

2200

, 7.5

1850

, 7.0

1650

, 7.5

1450

, 7.0

1300

, 7.0

1200

, 7.5

1100

, 7.5

1000

, 7.0

950,

7.5

850,

7.0

800,

7.0

F150

4850

, 10.

542

50, 1

1.5

3850

, 12.

535

00, 1

3.5

3200

, 14.

028

50, 1

4.0

2550

, 14.

023

00, 1

4.0

2150

, 14.

019

50, 1

4.0

1800

, 13.

517

00, 1

4.0

1600

, 14.

0

F200

6850

, 14.

561

50, 1

6.5

5550

, 18.

049

00, 1

8.5

4300

, 18.

538

50, 1

8.5

3450

, 18.

531

50, 1

9.0

2850

, 18.

526

50, 1

8.5

2450

, 18.

523

00, 1

8.5

2150

, 18.

5

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

rafte

r spa

n in

mm

, the

2nd

val

ue in

the

tabl

e is

the

tens

ile re

actio

n (k

N) o

n th

e su

ppor

t (po

st).

3. T

he su

ppor

t rea

ctio

ns in

the

abov

e ta

ble

are

base

d on

the

reac

tion

in a

n in

tern

al su

ppor

t of a

2 e

qual

con

tinuo

us sp

an b

eam

with

3 su

ppor

ts. F

or e

nd p

osts

, mul

tiply

the

post

reac

tion

in ta

bles

3C

by

0.4.

4. R

afte

r spa

n =

spac

ing

of su

ppor

ts.

5. V

alue

s fro

m 1

side

d bl

ocke

d ca

n be

con

serv

ativ

ely

used

for 0

and

4 si

des w

ind

bloc

king

.

Dia

gra

m 3

C

Con

tinuo

us ra

fter s

uppo

rting

one

pu

rlin.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

t ed

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A r a

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

23FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

Tab

le 3

D

Rafte

r Spa

n An

d Re

actio

n, S

pan

Type

: Dou

ble/

Mul

tiple

Con

tinuo

us, C

onne

ctio

n: B

olte

d, S

uppo

rting

: 2 P

urlin

s, F

lat S

truct

ure

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Raf

ter L

oad

Wid

th (m

m)

≤ 12

00

150

018

00

210

02

40

02

70

03

00

03

30

03

60

03

90

04

20

04

50

04

80

0

0/1

/4 s

ides

N1

/ N

2F1

0064

50, 3

.060

50, 3

.555

00, 4

.050

50, 4

.047

00, 4

.544

00, 4

.541

50, 4

.539

50, 5

.037

50, 5

.036

00, 5

.534

50, 5

.533

00, 5

.531

50, 5

.5

F150

8800

, 4.0

8400

, 4.5

8050

, 5.5

7800

, 6.0

7350

, 6.5

6900

, 7.0

6500

, 7.5

6200

, 7.5

5900

, 8.0

5650

, 8.5

5400

, 8.5

5200

, 9.0

5000

, 9.0

F200

1095

0, 4

.510

500,

5.5

1015

0, 6

.598

50, 7

.595

50, 8

.593

50, 9

.591

00, 1

0.0

8850

, 11.

084

50, 1

1.5

8100

, 11.

577

50, 1

2.0

7500

, 12.

572

00, 1

3.0

N3

F100

6000

, 4.5

5300

, 5.0

4800

, 5.5

4450

, 6.0

4100

, 6.0

3850

, 6.5

3650

, 7.0

3450

, 7.0

3300

, 7.5

3150

, 7.5

3000

, 8.0

2900

, 8.0

2800

, 8.0

F150

8800

, 6.5

8350

, 7.5

7550

, 8.5

6900

, 9.0

6400

, 9.5

6000

, 10.

056

50, 1

0.5

5350

, 11.

051

00, 1

1.5

4850

, 11.

546

50, 1

2.0

4450

, 12.

543

00, 1

2.5

F200

1095

0, 8

.010

500,

9.5

1015

0, 1

1.0

9850

, 12.

592

50, 1

3.5

8650

, 14.

081

50, 1

5.0

7700

, 15.

573

50, 1

6.0

7000

, 16.

567

00, 1

7.0

6450

, 17.

562

00, 1

8.0

N4

F100

4750

, 5.5

4200

, 6.0

3800

, 6.5

3500

, 7.0

3250

, 7.5

3000

, 7.5

2850

, 8.0

2700

, 8.5

2550

, 8.5

2450

, 9.0

2300

, 9.0

2200

, 9.5

2150

, 9.5

F150

7450

, 8.5

6600

, 9.5

5950

, 10.

054

50, 1

1.0

5000

, 11.

547

00, 1

2.0

4400

, 12.

541

50, 1

3.0

3900

, 13.

037

50, 1

3.5

3550

, 14.

034

00, 1

4.5

3250

, 14.

5

F200

1050

0, 1

1.5

9450

, 13.

085

50, 1

4.5

7850

, 15.

572

50, 1

6.0

6800

, 17.

064

00, 1

8.0

6000

, 18.

556

50, 1

9.0

5250

, 19.

048

50, 1

9.0

4550

, 19.

042

50, 1

9.0

2 s

ides

N1

/ N

2F1

00

5200

, 5.0

4600

, 5.5

4150

, 6.0

3800

, 6.5

3550

, 7.0

3300

, 7.0

3100

, 7.5

2950

, 8.0

2800

, 8.0

2700

, 8.5

2550

, 8.5

2450

, 9.0

2350

, 9.0

F150

8150

, 8.0

7200

, 8.5

6500

, 9.5

5950

, 10.

055

00, 1

0.5

5150

, 11.

048

50, 1

1.5

4550

, 12.

043

50, 1

2.5

4150

, 13.

039

50, 1

3.5

3750

, 13.

536

00, 1

4.0

F200

1095

0, 1

0.0

1020

0, 1

2.0

9350

, 13.

586

00, 1

4.5

7950

, 15.

074

50, 1

6.0

7000

, 16.

566

00, 1

7.5

6300

, 18.

060

00, 1

8.5

5700

, 19.

053

00, 1

9.0

5000

, 19.

0

N3

F100

4000

, 6.5

3550

, 7.0

3200

, 7.5

2900

, 8.0

2700

, 8.5

2500

, 8.5

2350

, 9.0

2200

, 9.5

2100

, 9.5

2000

, 10.

019

00, 1

0.0

1800

, 10.

517

00, 1

0.5

F150

6250

, 9.5

5500

, 10.

549

50, 1

1.5

4500

, 12.

041

50, 1

3.0

3850

, 13.

536

00, 1

4.0

3400

, 14.

532

00, 1

5.0

3050

, 15.

029

00, 1

5.5

2750

, 16.

026

50, 1

6.0

F200

9050

, 13.

579

50, 1

5.0

7200

, 16.

565

50, 1

7.5

6050

, 18.

555

50, 1

9.0

5000

, 19.

045

50, 1

9.0

4150

, 19.

038

50, 1

9.0

3550

, 19.

033

00, 1

9.0

3100

, 19.

0

N4

F100

3150

, 7.5

2800

, 8.0

2500

, 9.0

2250

, 9.0

2100

, 10.

019

00, 1

0.0

1800

, 10.

516

50, 1

0.5

1500

, 10.

514

00, 1

0.5

1300

, 10.

512

00, 1

0.5

1150

, 10.

5

F150

4950

, 11.

543

00, 1

2.5

3850

, 13.

535

00, 1

4.0

3200

, 15.

029

50, 1

5.5

2750

, 16.

025

50, 1

6.5

2400

, 16.

522

50, 1

7.0

2150

, 17.

520

00, 1

7.5

1900

, 17.

5

F200

7150

, 16.

562

50, 1

8.0

5500

, 19.

047

00, 1

9.0

4100

, 19.

036

50, 1

9.0

3300

, 19.

030

00, 1

9.0

2750

, 19.

025

50, 1

9.0

2350

, 19.

022

00, 1

9.0

2050

, 19.

0

3 s

ides

N1

/ N

2F1

0047

00, 5

.541

50, 6

.037

50, 6

.534

50, 7

.031

50, 7

.529

50, 8

.028

00, 8

.026

50, 8

.525

00, 9

.024

00, 9

.022

50, 9

.021

50, 9

.521

00, 1

0.0

F150

7300

, 8.5

6450

, 9.5

5800

, 10.

053

50, 1

1.0

4900

, 11.

546

00, 1

2.0

4300

, 12.

540

50, 1

3.0

3850

, 13.

536

50, 1

4.0

3500

, 14.

533

00, 1

4.5

3200

, 15.

0

F200

1030

0, 1

1.5

9300

, 13.

584

00, 1

4.5

7700

, 15.

571

50, 1

6.5

6650

, 17.

562

50, 1

8.0

5900

, 19.

055

00, 1

9.0

5050

, 19.

047

00, 1

9.0

4400

, 19.

041

00, 1

9.0

N3

F100

3600

, 7.0

3200

, 7.5

2850

, 8.0

2600

, 8.5

2400

, 9.0

2250

, 9.5

2100

, 10.

019

50, 1

0.0

1850

, 10.

517

50, 1

0.5

1600

, 10.

515

00, 1

0.5

1400

, 10.

5

F150

5600

, 10.

549

50, 1

1.5

4400

, 12.

540

00, 1

3.0

3700

, 14.

034

00, 1

4.0

3200

, 15.

030

00, 1

5.5

2800

, 15.

526

50, 1

6.0

2500

, 16.

024

00, 1

6.5

2300

, 17.

0

F200

8150

, 15.

071

50, 1

6.5

6400

, 17.

558

50, 1

9.0

5150

, 19.

046

00, 1

9.0

4100

, 19.

037

50, 1

9.0

3450

, 19.

031

50, 1

9.0

2950

, 19.

027

50, 1

9.0

2550

, 19.

0

N4

F100

2850

, 8.0

2500

, 9.0

2200

, 9.5

2000

, 10.

018

50, 1

0.5

1650

, 10.

515

00, 1

0.5

1350

, 10.

512

50, 1

0.5

1150

, 10.

510

50, 1

0.0

1000

, 10.

595

0, 1

0.5

F150

4400

, 12.

538

50, 1

3.5

3400

, 14.

530

50, 1

5.0

2800

, 15.

525

50, 1

6.0

2400

, 17.

022

00, 1

7.0

2050

, 17.

019

00, 1

7.0

1750

, 17.

016

50, 1

7.0

1550

, 17.

0

F200

6400

, 18.

055

00, 1

9.0

4550

, 19.

039

00, 1

9.0

3400

, 19.

030

50, 1

9.0

2 700

, 19.

024

50, 1

9.0

2250

, 19.

021

00, 1

9.0

1950

, 19.

018

00, 1

9.0

1700

, 19.

0

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

rafte

r spa

n in

mm

, the

2nd

val

ue in

the

tabl

e is

the

tens

ile re

actio

n (k

N) o

n th

e su

ppor

t (po

st).

3. T

he su

ppor

t rea

ctio

ns in

the

abov

e ta

ble

are

base

d on

the

reac

tion

in a

n in

tern

al su

ppor

t of a

2 e

qual

con

tinuo

us sp

an b

eam

with

3 su

ppor

ts. F

or e

nd p

osts

, mul

tiply

the

post

reac

tion

in ta

bles

3D

by

0.4.

4. R

afte

r spa

n =

spac

ing

of su

ppor

ts.

5. V

alue

s fro

m 1

side

d bl

ocke

d ca

n be

con

serv

ativ

ely

used

for 0

and

4 si

des w

ind

bloc

king

.

Dia

gra

m 3

D

Con

tinuo

us ra

fter s

uppo

rting

tw

o pu

rlins

.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am

span

s bet

wee

n 2

supp

orts

(pos

ts o

r bea

ms).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pa

st a

t lea

st 1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

the

gutte

r is l

ocat

ed.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am

is su

ppor

ted

e.g.

by

a un

iver

sal b

rack

et

bolte

d to

the

side

of th

e po

st o

r the

bea

m is

bo

lted

with

the

post

beh

ind

the

beam

.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he

shee

t ove

rhan

g is

incl

uded

in th

e sh

eet l

oad

wid

th.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to

atta

ched

or f

rees

tand

ing

stru

ctur

es. T

he

tabl

es g

ive

the

atta

chm

ent l

oad

whe

re

appl

icab

le.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

24FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

Tab

le 4

A

Hea

dbea

m S

pan

And

Reac

tion,

Spa

n Ty

pe: S

impl

y Su

ppor

ted,

Con

nect

ion:

Bra

cket

Or B

olte

d, S

uppo

rting

: 1 R

afte

r, Fl

at S

truct

ure

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Raf

ter S

pan

(mm

)

≤ 3

00

03

50

04

00

04

50

05

00

05

50

06

00

06

50

07

00

07

50

08

00

08

50

0

0/1

/4 s

ides

N1

/ N

2F1

0044

50, 1

.043

00, 1

.541

00, 1

.540

00, 1

.538

50, 1

.537

50, 2

.036

50, 2

.035

50, 2

.035

00, 2

.034

00, 2

.033

50, 2

.533

00, 2

.5

F150

6600

, 1.5

6400

, 2.0

6250

, 2.0

6100

, 2.5

5950

, 2.5

5800

, 2.5

5650

, 3.0

5500

, 3.0

5400

, 3.0

5300

, 3.5

5200

, 3.5

5100

, 3.5

F200

8250

, 2.0

8050

, 2.5

7850

, 2.5

7700

, 3.0

7550

, 3.0

7400

, 3.5

7250

, 3.5

7150

, 4.0

7050

, 4.0

6950

, 4.0

6850

, 4.5

6750

, 4.5

N3

F100

4450

, 2.0

4300

, 2.0

4100

, 2.5

4000

, 2.5

3850

, 2.5

3750

, 3.0

3650

, 3.0

3500

, 3.0

3350

, 3.0

3250

, 3.5

3150

, 3.5

3050

, 3.5

F150

6600

, 2.5

6400

, 3.0

6250

, 3.5

6100

, 3.5

5950

, 4.0

5800

, 4.5

5650

, 4.5

5500

, 5.0

5300

, 5.0

5100

, 5.0

4950

, 5.5

4750

, 5.5

F200

8250

, 3.5

8050

, 3.5

7850

, 4.0

7700

, 4.5

7550

, 5.0

7400

, 5.5

7250

, 5.5

7150

, 6.0

7050

, 6.5

6950

, 7.0

6850

, 7.0

6700

, 7.5

N4

F100

4100

, 2.5

3850

, 3.0

3600

, 3.0

3400

, 3.0

3200

, 3.5

3050

, 3.5

2950

, 3.5

2800

, 4.0

2700

, 4.0

2600

, 4.0

2550

, 4.5

2450

, 4.5

F150

6350

, 4.0

6000

, 4.5

5650

, 4.5

5350

, 5.0

5050

, 5.0

4800

, 5.5

4600

, 5.5

4400

, 6.0

4250

, 6.0

4100

, 6.5

4000

, 6.5

3850

, 6.5

F200

8250

, 5.0

8050

, 5.5

7850

, 6.5

7600

, 7.0

7150

, 7.0

6800

, 7.5

6500

, 8.0

6250

, 8.0

6000

, 8.5

5800

, 9.0

5600

, 9.0

5400

, 9.5

2 s

ides

N1

/ N

2F1

00

4350

, 2.5

4100

, 2.5

3900

, 3.0

3700

, 3.0

3500

, 3.0

3300

, 3.5

3200

, 3.5

3050

, 3.5

2950

, 3.5

2850

, 4.0

2750

, 4.0

2650

, 4.0

F150

6600

, 3.5

6300

, 4.0

6000

, 4.0

5750

, 4.5

5500

, 5.0

5200

, 5.0

5000

, 5.5

4800

, 5.5

4600

, 5.5

4450

, 6.0

4300

, 6.0

4150

, 6.0

F200

8250

, 4.0

8050

, 5.0

7850

, 5.5

7700

, 6.0

7550

, 6.5

7400

, 7.0

7050

, 7.5

6750

, 7.5

6500

, 8.0

6300

, 8.0

6050

, 8.5

5850

, 8.5

N3

F100

3550

, 3.0

3300

, 3.5

3050

, 3.5

2900

, 3.5

2750

, 4.0

2600

, 4.0

2500

, 4.5

2400

, 4.5

2300

, 4.5

2250

, 5.0

2150

, 5.0

2100

, 5.0

F150

5600

, 4.5

5200

, 5.0

4850

, 5.5

4550

, 5.5

4300

, 6.0

4100

, 6.5

3950

, 6.5

3800

, 7.0

3650

, 7.0

3500

, 7.5

3400

, 7.5

3300

, 8.0

F200

7900

, 6.5

7350

, 7.0

6900

, 7.5

6450

, 8.0

6100

, 8.5

5800

, 8.5

5550

, 9.0

5350

, 9.5

5150

, 10.

049

50, 1

0.0

4800

, 10.

546

00, 1

0.5

N4

F100

2900

, 4.0

2650

, 4.0

2500

, 4.5

2350

, 4.5

2200

, 4.5

2100

, 5.0

2050

, 5.0

1950

, 5.5

1800

, 5.5

1700

, 5.5

1600

, 5.5

1500

, 5.5

F150

4550

, 5.5

4200

, 6.0

3950

, 6.5

3700

, 7.0

3500

, 7.5

3350

, 7.5

3200

, 8.0

3050

, 8.5

2950

, 8.5

2850

, 9.0

2750

, 9.0

2650

, 9.5

F200

6450

, 8.0

5950

, 8.5

5600

, 9.0

5250

, 10.

049

50, 1

0.0

4750

, 11.

045

00, 1

1.0

4350

, 11.

541

50, 1

2.0

4000

, 12.

539

00, 1

3.0

3750

, 13.

0

3 s

ides

N1

/ N

2F1

0040

00, 2

.538

00, 3

.035

50, 3

.033

50, 3

.531

50, 3

.530

00, 3

.529

00, 4

.027

50, 4

.026

50, 4

.025

50, 4

.025

00, 4

.524

00, 4

.5

F150

6200

, 4.0

5850

, 4.5

5550

, 4.5

5250

, 5.0

4950

, 5.0

4750

, 5.5

4550

, 6.0

4350

, 6.0

4200

, 6.0

4050

, 6.5

3900

, 6.5

3800

, 7.0

F200

8250

, 5.0

8050

, 6.0

7800

, 6.5

7450

, 7.0

7050

, 7.5

6700

, 7.5

6400

, 8.0

6150

, 8.5

5900

, 8.5

5700

, 9.0

5500

, 9.0

5300

, 9.5

N3

F100

3250

, 3.5

3000

, 3.5

2800

, 4.0

2650

, 4.0

2500

, 4.5

2350

, 4.5

2250

, 4.5

2200

, 5.0

2100

, 5.0

2050

, 5.0

1950

, 5.5

1850

, 5.5

F150

5100

, 5.0

4700

, 5.5

4400

, 6.0

4150

, 6.5

3900

, 6.5

3750

, 7.0

3550

, 7.0

3450

, 7.5

3300

, 7.5

3200

, 8.0

3100

, 8.5

3000

, 8.5

F200

7250

, 7.0

6700

, 7.5

6250

, 8.5

5850

, 8.5

5550

, 9.0

5300

, 9.5

5050

, 10.

048

50, 1

0.5

4650

, 11.

045

00, 1

1.0

4350

, 11.

542

00, 1

2.0

N4

F100

2600

, 4.0

2400

, 4.5

2250

, 4.5

2150

, 5.0

2000

, 5.0

1900

, 5.5

1750

, 5.5

1600

, 5.5

1500

, 5.5

1400

, 5.5

1300

, 5.5

1250

, 5.5

F150

4150

, 6.5

3800

, 6.5

3550

, 7.0

3350

, 7.5

3200

, 8.0

3050

, 8.5

2900

, 8.5

2800

, 9.0

2700

, 9.5

2600

, 10.

025

00, 1

0.0

2450

, 10.

5

F200

5850

, 8.5

5450

, 9.5

5050

, 10.

047

50, 1

0.5

4500

, 11.

043

00, 1

2.0

4100

, 12.

039

50, 1

3.0

3800

, 13.

036

50, 1

3.5

3550

, 14.

0 34

00, 1

4.5

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

head

beam

span

(mm

), th

e 2n

d va

lue

in th

e ta

ble

is th

e te

nsile

reac

tion

(kN

) on

the

supp

ort (

e.g.

pos

t).3.

The

supp

ort r

eact

ion

is ba

sed

on 1

span

and

2 su

ppor

ts.

4. H

eadb

eam

span

= sp

acin

g of

supp

orts

.5.

Val

ues f

rom

1 si

ded

bloc

ked

can

be c

onse

rvat

ivel

y us

ed fo

r 0 a

nd 4

side

s win

d bl

ocki

ng.

Dia

gra

m 4

A

Hea

dbea

m su

ppor

ting

one

rafte

r.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am sp

ans

betw

een

2 su

ppor

ts (p

osts

or b

eam

s).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pas

t at l

east

1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

th

e gu

tter i

s loc

ated

.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am is

supp

orte

d e.

g. b

y a

univ

ersa

l bra

cket

bol

ted

to th

e sid

e of

the

post

or

the

beam

is b

olte

d w

ith th

e po

st b

ehin

d th

e be

am.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he sh

eet o

verh

ang

is in

clud

ed in

the

shee

t loa

d w

idth

.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to a

ttach

ed o

r fre

esta

ndin

g st

ruct

ures

. The

tabl

es g

ive

the

atta

chm

ent

load

whe

re a

pplic

able

.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

25FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

Tab

le 4

B

Hea

dbea

m S

pan

And

Reac

tion,

Spa

n Ty

pe: S

impl

y Su

ppor

ted,

Con

nect

ion:

Bra

cket

Or B

olte

d, S

uppo

rting

: 2 R

afte

rs, F

lat S

truct

ure

Win

d B

lock

ing

Win

d C

lass

Bea

m S

ize

Raf

ter S

pan

(mm

)

≤ 3

00

03

50

04

00

04

50

05

00

05

50

06

00

06

50

07

00

07

50

08

00

08

50

0

0/1

/4 s

ides

N1

/ N

2F1

0043

00, 1

.541

00, 1

.539

50, 1

.538

00, 1

.537

00, 2

.036

00, 2

.035

00, 2

.034

00, 2

.033

50, 2

.032

50, 2

.532

00, 2

.531

50, 2

.5

F150

6450

, 2.0

6250

, 2.0

6100

, 2.5

5900

, 2.5

5750

, 2.5

5600

, 3.0

5450

, 3.0

5300

, 3.0

5200

, 3.5

5100

, 3.5

5000

, 3.5

4900

, 4.0

F200

8100

, 2.0

7900

, 2.5

7700

, 2.5

7550

, 3.0

7400

, 3.5

7250

, 3.5

7100

, 4.0

7000

, 4.0

6900

, 4.5

6800

, 4.5

6700

, 5.0

6600

, 5.0

N3

F100

4300

, 2.0

4100

, 2.0

3950

, 2.5

3800

, 2.5

3700

, 3.0

3600

, 3.0

3500

, 3.0

3400

, 3.5

3350

, 3.5

3250

, 3.5

3200

, 4.0

3150

, 4.0

F150

6450

, 3.0

6250

, 3.5

6100

, 3.5

5900

, 4.0

5750

, 4.5

5600

, 4.5

5450

, 5.0

5300

, 5.0

5200

, 5.5

5100

, 5.5

5000

, 6.0

4900

, 6.0

F200

8100

, 3.5

7900

, 4.0

7700

, 4.5

7550

, 5.0

7400

, 5.5

7250

, 6.0

7100

, 6.0

7000

, 6.5

6900

, 7.0

6800

, 7.5

6700

, 8.0

6600

, 8.0

N4

F100

4050

, 3.0

3850

, 3.0

3700

, 3.5

3500

, 3.5

3300

, 4.0

3150

, 4.0

3050

, 4.0

2900

, 4.5

2800

, 4.5

2700

, 4.5

2600

, 4.5

2550

, 5.0

F150

6250

, 4.0

5900

, 4.5

5650

, 5.0

5400

, 5.5

5200

, 6.0

4950

, 6.0

4750

, 6.5

4550

, 6.5

4400

, 7.0

4250

, 7.0

4100

, 7.5

3950

, 7.5

F200

8100

, 5.5

7900

, 6.0

7700

, 7.0

7550

, 7.5

7300

, 8.0

7050

, 8.5

6750

, 9.0

6450

, 9.5

6200

, 9.5

6000

, 10.

058

00, 1

0.5

5600

, 10.

5

2 s

ides

N1

/ N

2F1

00

4300

, 2.5

4050

, 3.0

3850

, 3.0

3700

, 3.5

3550

, 3.5

3450

, 3.5

3300

, 4.0

3150

, 4.0

3050

, 4.0

2950

, 4.5

2850

, 4.5

2750

, 4.5

F150

6450

, 3.5

6200

, 4.0

5950

, 4.5

5700

, 5.0

5500

, 5.5

5300

, 5.5

5150

, 6.0

4950

, 6.0

4750

, 6.5

4600

, 6.5

4450

, 7.0

4300

, 7.0

F200

8100

, 4.5

7900

, 5.0

7700

, 6.0

7550

, 6.5

7400

, 7.0

7250

, 7.5

7100

, 8.0

6950

, 8.5

6750

, 9.0

6500

, 9.0

6300

, 9.5

6050

, 9.5

N3

F100

3600

, 3.5

3400

, 3.5

3200

, 4.0

3000

, 4.0

2850

, 4.5

2700

, 4.5

2600

, 5.0

2500

, 5.0

2400

, 5.0

2300

, 5.5

2150

, 5.5

2050

, 5.5

F150

5550

, 5.0

5250

, 5.5

5000

, 6.0

4700

, 6.5

4450

, 7.0

4250

, 7.0

4050

, 7.5

3900

, 8.0

3750

, 8.0

3650

, 8.5

3500

, 8.5

3400

, 9.0

F200

7750

, 7.0

7350

, 8.0

7000

, 8.5

6700

, 9.0

6300

, 9.5

6000

, 10.

057

50, 1

0.5

5500

, 11.

053

00, 1

1.0

5100

, 11.

549

50, 1

2.0

4800

, 12.

5

N4

F100

3000

, 4.5

2750

, 4.5

2550

, 5.0

2450

, 5.0

2300

, 5.5

2100

, 5.5

1900

, 5.5

1750

, 5.5

1650

, 5.5

1550

, 5.5

1450

, 5.5

1350

, 5.5

F150

4700

, 6.5

4350

, 7.0

4050

, 7.5

3800

, 8.0

3600

, 8.5

3450

, 8.5

3300

, 9.0

3150

, 9.5

3050

, 10.

029

50, 1

0.0

2850

, 10.

527

00, 1

0.5

F200

6650

, 9.0

6150

, 10.

057

50, 1

0.5

5400

, 11.

051

50, 1

2.0

4900

, 12.

546

50, 1

2.5

4500

, 13.

543

00, 1

3.5

4150

, 14.

040

00, 1

4.5

3900

, 15.

0

3 s

ides

N1

/ N

2F1

0039

50, 3

.037

50, 3

.036

00, 3

.534

50, 3

.532

50, 4

.031

00, 4

.030

00, 4

.528

50, 4

.527

50, 4

.526

50, 4

.526

00, 5

.025

00, 5

.0

F150

6100

, 4.5

5750

, 4.5

5500

, 5.0

5300

, 5.5

5100

, 6.0

4900

, 6.5

4700

, 6.5

4500

, 7.0

4350

, 7.0

4200

, 7.5

4050

, 7.5

3900

, 7.5

F200

8100

, 5.5

7900

, 6.5

7700

, 7.0

7350

, 7.5

7100

, 8.0

6850

, 8.5

6600

, 9.0

6350

, 9.5

6100

, 10.

059

00, 1

0.0

5700

, 10.

555

00, 1

0.5

N3

F100

3350

, 4.0

3100

, 4.0

2900

, 4.5

2700

, 4.5

2600

, 5.0

2450

, 5.0

2350

, 5.5

2200

, 5.5

2050

, 5.5

1900

, 5.5

1800

, 5.5

1700

, 5.5

F150

5150

, 5.5

4850

, 6.5

4550

, 6.5

4250

, 7.0

4050

, 7.5

3850

, 8.0

3700

, 8.0

3550

, 8.5

3400

, 9.0

3300

, 9.0

3200

, 9.5

3100

, 9.5

F200

7250

, 8.0

6850

, 8.5

6450

, 9.5

6050

, 10.

057

50, 1

0.5

5450

, 11.

052

00, 1

1.5

5000

, 12.

048

00, 1

2.5

4650

, 12.

545

00, 1

3.0

4350

, 13.

5

N4

F100

2700

, 4.5

2500

, 5.0

2350

, 5.5

2100

, 5.5

1900

, 5.5

1700

, 5.5

1600

, 5.5

1450

, 5.5

1350

, 5.5

1250

, 5.5

1200

, 5.5

1100

, 5.0

F150

4250

, 7.0

3950

, 7.5

3700

, 8.0

3450

, 8.5

3300

, 9.0

3150

, 9.5

3000

, 10.

029

00, 1

0.5

2700

, 10.

525

00, 1

0.5

2350

, 10.

522

00, 1

0.5

F200

6050

, 10.

056

00, 1

1.0

5250

, 11.

549

50, 1

2.5

4650

, 13.

044

50, 1

3.5

4250

, 14.

040

50, 1

4.5

3900

, 15.

038

00, 1

5.5

3650

, 16.

0 35

50, 1

6.5

Tabl

e N

otes

:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

head

beam

span

(mm

), th

e 2n

d va

lue

in th

e ta

ble

is th

e te

nsile

reac

tion

(kN

) on

the

supp

ort (

e.g.

pos

t).3.

The

supp

ort r

eact

ion

is ba

sed

on 1

span

and

2 su

ppor

ts.

4. H

eadb

eam

span

= sp

acin

g of

supp

orts

.5.

Val

ues f

rom

1 si

ded

bloc

ked

can

be c

onse

rvat

ivel

y us

ed fo

r 0 a

nd 4

side

s win

d bl

ocki

ng.

Dia

gra

m 4

B

Hea

dbea

m su

ppor

ting

two

rafte

rs.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am sp

ans

betw

een

2 su

ppor

ts (p

osts

or b

eam

s).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pas

t at l

east

1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

th

e gu

tter i

s loc

ated

.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am is

supp

orte

d e.

g. b

y a

univ

ersa

l bra

cket

bol

ted

to th

e sid

e of

the

post

or

the

beam

is b

olte

d w

ith th

e po

st b

ehin

d th

e be

am.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he sh

eet o

verh

ang

is in

clud

ed in

the

shee

t loa

d w

idth

.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to a

ttach

ed o

r fre

esta

ndin

g st

ruct

ures

. The

tabl

es g

ive

the

atta

chm

ent

load

whe

re a

pplic

able

.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

26FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

Tab

le 5

Atta

chm

ent L

oad,

Fla

t Stru

ctur

e

Win

d B

lock

ing

Win

d C

lass

Att

achm

ent L

oad

Wid

th (m

m)

≤ 9

00

120

015

00

180

02

100

24

00

27

00

30

00

33

00

36

00

39

00

42

00

45

00

0/1

/4 s

ides

N1

/ N

20.

40.

50.

60.

80.

91

1.2

1.3

1.4

1.5

1.7

1.8

1.9

N3

0.6

0.8

11.

31.

51.

71.

92.

12.

32.

52.

72.

93.

2

N4

0.9

1.3

1.6

1.9

2.2

2.6

2.9

3.2

3.5

3.8

4.2

4.5

4.8

2 s

ides

N1

/ N

20.

81.

11.

41.

61.

92.

22.

52.

73

3.3

3.6

3.8

4.1

N3

1.3

1.7

2.2

2.6

33.

53.

94.

34.

85.

25.

76.

16.

5

N4

22.

63.

33.

94.

65.

25.

96.

57.

27.

98.

59.

29.

8

3 s

ides

N1

/ N

21

1.3

1.6

22.

32.

63

3.3

3.6

44.

34.

65

N3

1.6

2.1

2.6

3.1

3.7

4.2

4.7

5.2

5.8

6.3

6.8

7.4

7.9

N4

2.4

3.1

3.9

4.7

5.5

6.3

7.1

7.9

8.7

9.5

10.3

1111

.8

Tabl

e N

otes

:

1. A

ttach

men

t loa

d is

the

unifo

rmly

des

ign

dist

ribut

ed lo

ad in

kN

/m a

ctin

g on

the

atta

chm

ent s

truct

ure

e.g.

exi

stin

g w

all.

Dia

gra

m 5

Atta

chm

ent l

oad.

Gen

eral

Not

es:

1.

A si

mpl

y su

ppor

ted

beam

mea

ns th

e be

am sp

ans

betw

een

2 su

ppor

ts (p

osts

or b

eam

s).

2.

A c

ontin

uous

bea

m m

eans

the

beam

span

s pas

t at l

east

1

inte

rnal

pos

ts (i

.e. b

eam

on

3 or

mor

e po

sts).

3.

A p

urlin

is a

bea

m w

hich

supp

orts

shee

ting

only.

4.

A ra

fter r

uns d

own

the

slope

(fal

l) an

d su

ppor

ts p

urlin

s.

5.

A h

eadb

eam

supp

orts

the

low

er e

dge

of th

e ro

of w

here

th

e gu

tter i

s loc

ated

.

6.

The

conn

ectio

n co

lum

n gi

ves h

ow th

e be

am is

supp

orte

d e.

g. b

y a

univ

ersa

l bra

cket

bol

ted

to th

e sid

e of

the

post

or

the

beam

is b

olte

d w

ith th

e po

st b

ehin

d th

e be

am.

7.

The

tabl

es a

llow

for s

heet

ove

rhan

g. T

he sh

eet o

verh

ang

is in

clud

ed in

the

shee

t loa

d w

idth

.

8.

The

tabl

es a

nd d

iagr

ams a

pply

equ

ally

to a

ttach

ed o

r fre

esta

ndin

g st

ruct

ures

. The

tabl

es g

ive

the

atta

chm

ent

load

whe

re a

pplic

able

.

2C

Purli

n Sp

an

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Fall

Bac

k at

tach

men

t or f

rees

tand

ing

Ra�er Span

Ra�er Span

Ra�er

Ra�er

Ra�er

Ra�er Span

Ra�er Span

Ra�er Span

Ra�er Span

Sheet Span

Tabl

e 2a

Tabl

e 1

Tabl

e 2c

Tabl

e 3b

Tabl

e 3a

Tabl

e 4a

Tabl

e 5

Tabl

e 4b

4A

5

4B

1

3B

3A

Tabl

e 3c

3D

Tabl

e 3d

Tabl

e 2b

Hea

db

eam

Sp

an

Hea

db

eam

Sp

anH

ead

bea

m S

pan

Load

Wid

thLo

ad W

idth

Load Width

Sheet Span

Load

Wid

thLo

ad W

idth

Load Width

Load Width

Sheet Span

3C

2A

Sheet Span

Fall

Hea

db

eam

Sp

an

Bac

k at

tach

men

t or f

rees

tand

ing

Load Width

Sheet Span

Fall

2B

Hea

db

eam

Sp

an

Load Width

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t or f

rees

tand

ing

Bac

k at

tach

men

t

Bac

k at

tach

men

t or f

rees

tand

ing

27FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

Sample 1 Sample 2

Sample 4

Sample 3

Sample 5 Sample 6

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

*Ra�

er -

Non

-load

bea

ring

Ra�e

r

Ra�e

r

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Shee

t Sp

an

Headbeam

Headbeam

*Ra�er is non-load bearing as there is no purlin fixed to it.

Headbeam

Headbeam

Headbeam Headbeam

Headbeam

Headbeam

Headbeam

Headbeam SpanHeadbeam Span


Purlin

Purlin

Purlin

Purlin Span

Purlin Span

Purlin Span Purlin Span

Purlin Span

Purlin

Purlin Purlin

Purlin Purlin

Purlin Purlin

Post

Post

PostPost

Post

Post

Post Post Post

Post

Post Post Post Post

Post

PostPostPost

Post Post

Post

Post

Post

Post

PostPost

Int. Ra�er LW End Ra�er LWInt. Ra�er LW End Ra�er LW

Post

Post

Headbeam Span Headbeam Span Headbeam Span

Headbeam Span

Attachment LW

Attachment LW

Roof slope & sheet fall






Headbeam LWHeadbeam LW

Hea

db

eam

LW

Hea

db

eam

LW

Hea

db

eam

LW

Purli

n LW

Purli

n LW

Purlin LW

Purli

n LW

Ra�er LW

Attached to existing structure


Sample 1

Headbeam, continuous span, sheeting only, attached.

Sample 2

Headbeam, simple span, no intermediate rafters, multiple purlins, attached.

Sample 3

Headbeam, simple span, freestanding.

Sample 5

Headbeam supporting rafters, freestanding.

Sample 6

Multiple rafters with multiple purlins, freestanding.

Sample 4

Rafter with multiple purlins, freestanding.

3.6 TYPICAL FLAT STRUCTURE TYPES

Sample 1 Sample 2

Sample 4

Sample 3

Sample 5 Sample 6

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

*Ra�

er -

Non

-load

bea

ring

Ra�e

r

Ra�e

r

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Ra�e

r

Shee

t Sp

an

Headbeam

Headbeam


Headbeam

Headbeam

Headbeam Headbeam

Headbeam

Headbeam

Headbeam



Purlin

Purlin

Purlin

Purlin Span

Purlin Span


Purlin Span

Purlin

Purlin Purlin

Purlin Purlin

Purlin Purlin

Post

Post

PostPost

Post

Post

Post Post Post

Post

Post Post Post Post

Post

PostPostPost

Post Post

Post

Post

Post

Post

PostPost


Post

Post


Headbeam Span

Attachment LW

Attachment LW








Hea

db

eam

LW

Hea

db

eam

LW

Hea

db

eam

LW

Purli

n LW

Purli

n LW

Purlin LW

Purli

n LW

Ra�er LW



Sample 1 Sample 2

Sample 4

Sample 3

Sample 5 Sample 6

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

*Ra�

er -

Non

-load

bea

ring

Ra�e

r

Ra�e

r

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r

Ra�e

r

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r

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Headbeam


Headbeam

Headbeam

Headbeam Headbeam

Headbeam

Headbeam

Headbeam



Purlin

Purlin

Purlin

Purlin Span

Purlin Span


Purlin Span

Purlin

Purlin Purlin

Purlin Purlin

Purlin Purlin

Post

Post

PostPost

Post

Post

Post Post Post

Post

Post Post Post Post

Post

PostPostPost

Post Post

Post

Post

Post

Post

PostPost


Post

Post


Headbeam Span

Attachment LW

Attachment LW








Hea

db

eam

LW

Hea

db

eam

LW

Hea

db

eam

LW

Purli

n LW

Purli

n LW

Purlin LW

Purli

n LW

Ra�er LW



Sample 1 Sample 2

Sample 4

Sample 3

Sample 5 Sample 6

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

*Ra�

er -

Non

-load

bea

ring

Ra�e

r

Ra�e

r

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

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r

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Ra�e

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Ra�e

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Ra�e

r

Ra�e

r

Shee

t Sp

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Headbeam

Headbeam


Headbeam

Headbeam

Headbeam Headbeam

Headbeam

Headbeam

Headbeam



Purlin

Purlin

Purlin

Purlin Span

Purlin Span


Purlin Span

Purlin

Purlin Purlin

Purlin Purlin

Purlin Purlin

Post

Post

PostPost

Post

Post

Post Post Post

Post

Post Post Post Post

Post

PostPostPost

Post Post

Post

Post

Post

Post

PostPost


Post

Post


Headbeam Span

Attachment LW

Attachment LW








Hea

db

eam

LW

Hea

db

eam

LW

Hea

db

eam

LW

Purli

n LW

Purli

n LW

Purlin LW

Purli

n LW

Ra�er LW



Sample 1 Sample 2

Sample 4

Sample 3

Sample 5 Sample 6

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

*Ra�

er -

Non

-load

bea

ring

Ra�e

r

Ra�e

r

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

Ra�e

r Sp

an

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Ra�e

r

Ra�e

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Ra�e

r

Ra�e

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Ra�e

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Shee

t Sp

an

Headbeam

Headbeam


Headbeam

Headbeam

Headbeam Headbeam

Headbeam

Headbeam

Headbeam



Purlin

Purlin

Purlin

Purlin Span

Purlin Span


Purlin Span

Purlin

Purlin Purlin

Purlin Purlin

Purlin Purlin

Post

Post

PostPost

Post

Post

Post Post Post

Post

Post Post Post Post

Post

PostPostPost

Post Post

Post

Post

Post

Post

PostPost


Post

Post


Headbeam Span

Attachment LW

Attachment LW








Hea

db

eam

LW

Hea

db

eam

LW

Hea

db

eam

LW

Purli

n LW

Purli

n LW

Purlin LW

Purli

n LW

Ra�er LW


Attached to existing structureSample 1 Sample 2

Sample 4

Sample 3

Sample 5 Sample 6

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

Shee

t Sp

an

*Ra�

er -

Non

-load

bea

ring

Ra�e

r

Ra�e

r

Ra�e

r Sp

an

Ra�e

r Sp

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Ra�e

r Sp

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Ra�e

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Ra�e

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Ra�e

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Ra�e

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Shee

t Sp

an

Headbeam

Headbeam


Headbeam

Headbeam

Headbeam Headbeam

Headbeam

Headbeam

Headbeam



Purlin

Purlin

Purlin

Purlin Span

Purlin Span


Purlin Span

Purlin

Purlin Purlin

Purlin Purlin

Purlin Purlin

Post

Post

PostPost

Post

Post

Post Post Post

Post

Post Post Post Post

Post

PostPostPost

Post Post

Post

Post

Post

Post

PostPost


Post

Post


Headbeam Span

Attachment LW

Attachment LW








Hea

db

eam

LW

Hea

db

eam

LW

Hea

db

eam

LW

Purli

n LW

Purli

n LW

Purlin LW

Purli

n LW

Ra�er LW



LW = Load Width

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3.7 DESIGN EXAMPLES: FLAT STRUCTURESEXAMPLES

There are two examples given to show the procedure for designing an awning. Example 1 is a simple attached awning which uses the long spanning capability of FLATDEK® to provide a structure with minimal FIRMLOK® beams.

Example 2 is a bigger freestanding carport with purlins, rafters and headbeams. It has 2 different solutions to illustrate different choices in the awning design configuration.

GENERAL NOTES

The following design parameters are required:

DIMENSIONS

Work out the relevant length, width and height for your structure.

WIND CLASS

Refer to AS4055 or consult your local building authority, engineer or builder to determine if the Wind Category is N1, N2, N3, etc. Refer to the ‘Lysaght Design Guide for Wind’.

WIND BLOCKING

From site condition, determine wind blocking (0,1,2,3,4 sides blocked) as defined in Section 1.4.

BEAM CONNECTIONS

Refer to the key diagram and connection details, see different ways to connect FIRMLOK® beams to a support.

ROOF CLADDING

Refer to the cladding selection portion of this guide for claddings and spans. Check sheet overhang if required. Cladding overhang and gutter width must be included in load width calculation when determining beam size and span

Try out different beam sizes, number of beams and connection types to find the most suitable arrangement for your structure. Interpolation between values of the same category is allowed, in the following examples. For simplicity, the next higher value is used.

Follow the Guide for the design process detailed here.

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EXAMPLE 1:

A SIMPLE FLAT AWNING ATTACHED TO THE BACK OF AN EXISTING DWELLING.

Design parameters:

• Wind Class: N3 (W41N)

• Wind Blocking: 1 side blocked

• Projection: 4200

• Width: 6200

• Cladding: No foot traffic, No overhang

• Connection: Beam to side of post

STEP 1: SELECT CLADDING

Refer to roof sheeting span table for wind class N3, 1 side blocked. An economical solution is to try a long span sheeting like FLATDEK® so no purlins or rafters are required. FLATDEK® 0.42mm spans a distance of 4500mm for single/continuous span with no foot traffic, thus FLATDEK® 0.42mm can be used with only a headbeam for the awning. This is a “No Foot Traffic” solution.

STEP 2: DETERMINE BEAM LOAD WIDTH

Half the wind load on the sheeting is taken at the house and the headbeam.

The beam load width is calculated as follows:

Half sheet span 4200 / 2 = 2100, sheeting overhang = 0, total load width = 2100 + 0 = 2100 mm

STEP 3: DETERMINE BEAM SIZE

Refer to the Beam Table Index for the headbeam tables for 1 span simply supported with connection type: Beam to side of post; refer to Table 2A. For an awning width = 6200mm, headbeam load width = 2100 mm, wind class: N3 and wind blocking: 1 side blocked, the following beam spans are:

Beam Span (mm)

F100 4050 < 6200 Not OK

F150 6250 > 6200 OK

F200 7900 > 6200 OK

Minimum suitable beam size is a F150 beam; adopt a F150 for headbeam. Edge beams are optional at the sides of the awning; they don’t carry any load. For uniform appearance, use the same size edge beam as the headbeam; for minimum cost, use a F100 beam.

Posts:

The value next to the beam span in the tables is the reaction (load) at the end of the beam acting on the post. This value can be used to design the post. The wind uplift reaction on the post in this example is 5 kN. Please refer to post manufacturer’s data for post capacity.

STEP 4 DETERMINE ATTACHMENT LOAD

Use Table 5 to determine the load from the awning transferred to the attached structure. The attachment load is assumed to be uniformly distributed along the attached structure. The attachment load width: 4200mm/2 = 2100mm. For N3 & 1 side blocked, the attachment load is 1.5 kN/m. Use this load to check the attachment member e.g. receiver channel or beam, the fixings and the supporting structure e.g. wall or fascia and house rafters.

STEP 5 CONNECTION DETAILS

Since the Beam to side of post connection was chosen for the awning, refer to connection F6 for Beam to side of post corner detail and F9 for Beam to attachment detail.

DESIGN OUTCOME

Existing Structure

6200 width

Post

PostF6

F6

F9

F9

Roof Fall/Cladding Span

AttachmentAttachment LW: 2100

Headbeam LW: 2100

Headbeam F150

6200 width4200

Projection

Edge Beam F150

Edge Beam F150

Cladding: FLATDEK 0.42

42

00

Pro

ject

ion

Existing Structure

6200 width

Post

PostF6

F6

F9

F9


AttachmentAttachment LW: 2100

Headbeam LW: 2100

Headbeam F150

6200 width4200

Projection

Edge Beam F150

Edge Beam F150

Cladding: FLATDEK 0.42

42

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Pro

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EXAMPLE 2:

A SIMPLE FREE STANDING AWNING NEXT TO AN EXISTING DWELLING.

Design parameters:


• Wind blocking: 2 sides blocked

• Projection: 6000

• Width: 5000

• Cladding: SPANDEK® 0.42mm, Cladding overhang 0mm

• Connection: Use post behind beam

FREE STANDING AWNING


For this example, SPANDEK® 0.42mm was chosen. The cladding span tables for N4 wind with 1 side blocked shows that SPANDEK® can span 3000 mm. The awning projection is 5000 mm, hence the number of purlin spacings is: 5000 / 3000 = 1.67 i.e. 2 spaces; therefore try 1 intermediate purlin.

STEP 2: DETERMINE PURLIN SIZE

Refer to Table 1 to look up purlin size and span. The Load width for the purlin is 5000 / 2 = 2500 hence use 2700 mm without interpolation. In this example, at least 1 row of purlins is required. For N3 and wind blocking on 2 sides, the following single spans are:

Beam Span (mm)

F100 2600 < 6000 Not OK

F150 4100 < 6000 Not OK

F200 5850 < 6000 Not OK

For a single purlin span arrangement, no span is suitable. Let’s add an intermediate rafter to support the purlin and shorten the purlin span. Now the purlin span is 6000 / 2 = 3000. F150 can span 4100 > 3000 mm, OK.

Another possible solution is to add an extra row of purlins to reduce the load carried by each purlin. This will be explored as an option later.

STEP 3: DETERMINE RAFTER SIZE

Refer to the Beam Table Index for the rafter tables. For 1 span simply supported with a connection type: Post behind beam and supporting 1 row of internal purlins, refer to Table 3A.

Intermediate Rafter:

Awning width = 6000 mm, intermediate rafter load width = 6000 / 2 = 3000 hence use 3000 mm. For Wind Class: N3 and wind blocking on 2 sides, the following rafter spans are:

Beam Span (mm)

F100 2400 < 5000 Not OK

F150 3900 < 5000 Not OK

F200 5400 > 5000 OK

Minimum suitable rafter size is a F200 beam. Adopt F200 for the rafter.

End Rafter:

Awning width = 6000 mm, perimeter rafter load width = 6000 / 4 = 1500 hence use 1500 mm.

The available rafter spans are:

Beam Span (mm)

F100 3550 < 5000 Not OK

F150 5450 > 5000 OK

F200 7400 > 5000 OK

Minimum suitable rafter size is a F150 beam. For economy use a F150.

For universal appearance use a F200 beam since intermediate rafter size is a F200. The reaction is 3 kN.

Headbeam

Headbeam

Headbeam

Headbeam

Purlin

Purlin Purlin

Ra�e

r

Ra�e

rRa

�er

Ra�e

r

Ra�e

r


6000 width

Existing structure

1 side blocked

<1m

50

00

pro

ject

ion

Ra�er Span

Ra�er

F150/F200

Ra�er

F200

Post

Post

Post

Post

Post

Post

Post

Post

Ra�er F200

Ra�er

F150/F2002500

Purlin LW

833

Headbeam

LW

833

1667

Purlin LW

1667

Cladding:

Spandek 0.42

Cladding:

Spandek 0.42

5000

projection

5000

projection

6000 width

6000 width

3000Ra�er LW

3000Ra�er LW

Headbeam F200

Headbeam

F150/F200

Purlin F200Purlin F200

Headbeam

F150/F200

Headbeam F200

Purlin F150

Purlin F150

F5

F4a

F5

F4a

F4a

F4a

F5

F5

F4a

F4a

F5

F5

F4a

F4a

F5

F4bF5

2 purlins supported by an intermediate rafter.

Headbeam

Headbeam

Headbeam

Headbeam

Purlin

Purlin Purlin

Ra�e

r

Ra�e

rRa

�er

Ra�e

r

Ra�e

r


6000 width

Existing structure

1 side blocked

<1m

50

00

pro

ject

ion

Ra�er Span

Ra�er

F150/F200

Ra�er

F200

Post

Post

Post

Post

Post

Post

Post

Post

Ra�er F200

Ra�er

F150/F2002500

Purlin LW

833

Headbeam

LW

833

1667

Purlin LW

1667

Cladding:

Spandek 0.42

Cladding:

Spandek 0.42

5000

projection

5000

projection

6000 width

6000 width

3000Ra�er LW

3000Ra�er LW

Headbeam F200

Headbeam

F150/F200


Headbeam

F150/F200

Headbeam F200

Purlin F150

Purlin F150

F5

F4a

F5

F4a

F4a

F4a

F5

F5

F4a

F4a

F5

F5

F4a

F4a

F5

F4bF5

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ALTERNATE DESIGN: EXAMPLE 2

No intermediate rafter and 1 more purlin

Headbeam

Headbeam

Purlin

Purlin

Ra�e

r

Ra�e

r

STEP 2 DETERMINE PURLIN SIZE

Continuing from the end of Step 1 in the previous design, now try 2 rows of purlins with no intermediate rafter. Refer to Table 1 to lookup the purlin size and span. In this case the purlin load width is reduced to 5000 / 3 = 1667, hence use 1800 mm.

For N3 and 2 sides wind blocking, the following spans are.

Beam Span (mm)

F100 3200 < 6000 Not OK

F150 5050 < 6000 Not OK

F200 7050 > 6000 OK

The only suitable purlin size is a F200 beam; therefore adopt a F200 for the purlin.

STEP 3 DETERMINE RAFTER SIZE

For 1 rafter with connection type: ‘Post behind beam’ and supporting 2 purlins, refer to Table 3B. For awning projection = 5000, the rafter load width = 6000 / 2 = 3000, hence use 3000 mm.

For wind class: N3 and wind blocking: 2 sides blocked, the following rafter spans are:

Beam Span (mm)

F100 2650 < 5000 Not OK

F150 4200 < 5000 Not OK

F200 5900 > 5000 OK

The only suitable beam size is a F200 beam; therefore adopt a F200 for the rafter.

Headbeam

Headbeam

Headbeam

Headbeam

Purlin

Purlin Purlin

Ra�e

r

Ra�e

rRa

�er

Ra�e

r

Ra�e

r


6000 width

Existing structure

1 side blocked

<1m

50

00

pro

ject

ion

Ra�er Span

Ra�er

F150/F200

Ra�er

F200

Post

Post

Post

Post

Post

Post

Post

Post

Ra�er F200

Ra�er

F150/F2002500

Purlin LW

833

Headbeam

LW

833

1667

Purlin LW

1667

Cladding:

Spandek 0.42

Cladding:

Spandek 0.42

5000

projection

5000

projection

6000 width

6000 width

3000Ra�er LW

3000Ra�er LW

Headbeam F200

Headbeam

F150/F200


Headbeam

F150/F200

Headbeam F200

Purlin F150

Purlin F150

F5

F4a

F5

F4a

F4a

F4a

F5

F5

F4a

F4a

F5

F5

F4a

F4a

F5

F4bF5

STEP 4: DETERMINE HEADBEAM SIZE

The front and back headbeams are supporting one internal rafter, therefore use Table 4A to find the beam size and span. Note this table is different to headbeam Tables 2A, 2B & 2C, because these tables are designed to only carry load directly from the sheeting. For N3 wind, 2 sides blocked and supporting 1 internal rafter with a span of 5000 mm (use rafter span = 5000 mm), the following headbeam spans are:

Beam Span (mm)

F100 2750 < 6000 Not OK

F150 4300 < 6000 Not OK

F200 6100 = 6000 OK

The only suitable headbeam size is a F200 beam; therefore adopt a F200 for the headbeam. The reaction is 8.5 kN.

Posts:

The value next to the span in the tables is the reaction load acting on the support of the beam ie. the post. This value together with the load from the headbeam can be used to design the post and footings. The total uplift load on the post is: 8.5 + 3 = 11.5 kN.

This is conservatively high as the reaction load in the tables is for the maximum span of the beam. A more economical post and footing design can be considered by scaling down the reactions based on the ratio of actual span to maximum span; so the uplift load becomes:

3 x 5000 / 5450 + 8.5 x 6000/6100 = 11.1 kN (1.11 tonnes)

The post and footing should be designed for these loads and any horizontal wind loads.


Since a ‘post behind beam’ connection was selected for the awning, refer to Connection F4 for beam to beam details and connection F5 for corner details.

DESIGN OUTCOME:

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STEP 4 DETERMINE HEADBEAM SIZE

In this design, the head beams are not supporting an internal rafter. The headbeam load width is (5000 / 3) / 2 = 833, hence use min. 900mm. For N3 wind, 2 sides blocked, single span headbeam and ‘post behind beam’ connection, use Table 2B to find headbeam size and span.

The available choices are:

Beam Span (mm)

F100 4150 < 6000 Not OK

F150 6400 > 6000 OK

F200 9000 > 6000 OK

Minimum suitable headbeam size is a F150 beam. For economy, use a F150; for aesthetic appearances use a F200, since the rafter size is a F200.

Posts:

The post load is the same as in the previous example.


Since ‘Post behind beam’ connection was selected for the awning, refer to connection F4 for beam to beam details and connection F5 for the corner beam and post details.

DESIGN OUTCOME:

Note:

Since the purlin spacing is reduced, other claddings could be used. TRIMDEK® has a walkable span of 2000 and SPANDEK® has a walkable span of 1500. Both profiles can take the wind load so there is a choice of sheeting. Based on this, if the roof will be walked on for maintenance then TRIMDEK® should be used. If SPANDEK® is used then the “No Foot Traffic” sign should be fixed to the inside of the headbeams.

Headbeam

Headbeam

Headbeam

Headbeam

Purlin

Purlin Purlin

Ra�e

r

Ra�e

rRa

�er

Ra�e

r

Ra�e

r


6000 width

Existing structure

1 side blocked

<1m

50

00

pro

ject

ion

Ra�er Span

Ra�er

F150/F200

Ra�er

F200

Post

Post

Post

Post

Post

Post

Post

Post

Ra�er F200

Ra�er

F150/F2002500

Purlin LW

833

Headbeam

LW

833

1667

Purlin LW

1667

Cladding:

Spandek 0.42

Cladding:

Spandek 0.42

5000

projection

5000

projection

6000 width

6000 width

3000Ra�er LW

3000Ra�er LW

Headbeam F200

Headbeam

F150/F200


Headbeam

F150/F200

Headbeam F200

Purlin F150

Purlin F150

F5

F4a

F5

F4a

F4a

F4a

F5

F5

F4a

F4a

F5

F5

F4a

F4a

F5

F4bF5

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PART C4.0 Pitched Structures

4.1 TABLES FOR PITCHED STRUCTURESThere are 4 rafter load width tables for portal frame and collar-tie rafters for 15° and 22.5° roof pitches.

The tables are used to give the load width of FIRMLOK rafters for different wind classifications, wind blocking and rafter spans. Similarly 2 purlin span tables are provided for pitched structure using similar selection criteria.

EXTRACTION FROM A LOAD WIDTH TABLE

Wind Class

Wind Blocking

Rafter Size

Span (mm)5000

No. of int. purlins 0 1 2+

N3 0/1/4 sides F100 2030 1540 1540

F150 3950 3150 3390

F200 5620 5430 6050

Tributary load width of the rafter/truss frame, see load width tables for more details.

The clear span of the rafter/truss between supports.

No. of internal purlins between the eave and apex. For more than 2 int. purlins, select 2+ values.

PITCHED STRUCTURES TABLE INDEX

Table Roof Pitch Structural Memeber Supporting

6A 15° Collar-tie truss 0, 1, 2+ purlins

6B 22.5° Collar-tie truss 0, 1, 2+ purlins

7A 15° Portal frame rafter 0, 1, 2+ purlins

7B 22.5° Portal frame rafter 0, 1, 2+ purlins

8A 15° Purlin Sheeting

8B 22.5° Purlin Sheeting

Note: For rail size refer to Pitched structures- component Combination on page 34.

BASIC TERMINOLOGY

Collar-tie

PostSupport

Rail

InternalPurlin

Ra�er

RoofCladding

ApexPurlin

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PITCHED STRUCTURES COMPONENT COMBINATIONS (15° & 22.5°)

COLLAR TIE TRUSSRafter Collar Tie Purlin Rail Apex Connector

15° 22.5°

F10011 F10011 F10011 F15015, F20020 FLAB DELTA/ FLAB

F15015 F15015 F10011, F15015 F20020 FLAB DELTA/ FLAB

F20020 F15015 F15015, F20020 F20020 FLAB FLAB

PORTAL FRAME RAFTERRafter Purlin Rail Apex Connector

15° 22.5°

F10011 F10011 F15015, F20020 FLAB FLAB

F15015 F10011, F15015 F20020 FLAB FLAB

F20020 F15015, F20020 F20020 FLAB FLAB

Pitch Rafter Length

15° = 0.52 x Span

22.5° = 0.54 x Span

Note: These equations are estimation, not precise dimension for construction.

Gable End Rail

Ra�er

Ra�er

Rail behind post connections

Rail to side of post connections

APEX connectorAPEX connector

Typical Collar-Tie Truss Elevation Typical Portal Frame Ra�er Elevation

Pitch Pitch

Hei

ght

(H)

Hei

ght

(H)

0.7

*H

SpanSpanCollar - Tie Connector

150 Max

Ra�er length

Ra�er length

Ra�er connectorRa�er connector

APEX purlinAPEX purlin

Internal purlinsInternal purlins

Ra�er

Rail

Rail

RailRail

Purlin

Purlin

APEX Purlin

APEX Purlin

Ra�er

Ra�er

Ra�er

Ra�erRa�er

Gable End Rail

Ra�er

Ra�er





Pitch Pitch

Hei

ght

(H)

Hei

ght

(H)

0.7

*H


150 Max

Ra�er length

Ra�er length




Ra�er

Rail

Rail

RailRail

Purlin

Purlin

APEX Purlin

APEX Purlin

Ra�er

Ra�er

Ra�er

Ra�erRa�er

Gable End Rail

Ra�er

Ra�er





Pitch Pitch

Hei

ght

(H)

Hei

ght

(H)

0.7

*H


150 Max

Ra�er length

Ra�er length




Ra�er

Rail

Rail

RailRail

Purlin

Purlin

APEX Purlin

APEX Purlin

Ra�er

Ra�er

Ra�er

Ra�erRa�er

4.2 KEY PLAN FOR PITCHED STRUCTURES

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P1 APEX CONNECTION - INTEGRATED DELTA CONNECTOR(FOR 22.5° PITCH, 100 & 150 COLLAR-TIE ONLY)

Ra�er to Delta connector1x M8 Hex Head Bolt2x 12g-24x32 Teks TYP.

Extra 2x 12g-24x32 Teks (F15015)

12g-14x20 Teks (End frame only)

Extra 12g-24x32 Teks (F15015)

Ra�er Ra�er

Ra�er

Apex connector

Apex connector

Ra�er

Purlin to to Delta connector4x 12g-24x32 Teks TYP.

Delta connector

Delta connector Delta connectorDelta connector

Apex connector

Apex connector

Indent

Set purlins apart at bottom edge

150 max

20 TYP. 25

20 min

Indent

2x M8 Hex Head Boltsthru top indent

TYP. Apex Purlin Connection Universal Bracket to Ra�er1x M8 Hex Head Bolts thru top indent2x 12g-24x32 Teks at BTM. TYP.

Extra 1x 12g-24x32 Tek at centre (F15015 & F20020)

Purlin to universal bracket4x 12g-14x20 Teks at top & BTM. TYP.

Extra 2x 12g-14x20 Teks at centre (F15015 & F20020)

2x 12g-24x32 Teks at BTM. indent

8x 12g-24x32 Teks at BTM. indent, front & back

4x M8 Hex Head Bolts thru top indent & beam centre

4x 12g-24x32 Teks at top indent, front & back

12g-24x32 Teks, see table for quantity

Apex Purlins

Apex Purlin

Apex Purlin

Apex Purlin

Purlin

Ra�er

Ra�er

Ra�er Ra�er

Ra�er

Apex Purlin

Apex Purlin

Apex Purlin

Ra�er

Front View

INTERNAL FRAME Side View

END FRAME Side View

Isometric View

Ra�er

Apex connector

Ra�er

Isometric View

F10011 RAFTER ONLY Front View

END FRAME Side View


F15015, F20020 RAFTERS

FIXING AT TOP & BTM FLANGES TYP.

P2 APEX CONNECTION

4.3 CONNECTION DETAILS

NO. OF SCREW/FLANGE

Rafter Size Collar Tie Portal Frame Total

F10011 3 5 12, 20

F15015 5 5 20

F20020 6 6 24

MITRE CUT LENGTH ‘X’Rafter Size Roof Pitch

15° 22.5°

F10011 27 41

F15015 40 61

F20020 54 82

P1 APEX CONNECTION - INTEGRATED DELTA CONNECTOR(FOR 22.5° PITCH, 100 & 150 COLLAR-TIE ONLY)

Ra�er to Delta connector1x M8 Hex Head Bolt2x 12g-24x32 Teks TYP.

Extra 2x 12g-24x32 Teks (F15015)

12g-14x20 Teks (End frame only)

Extra 12g-24x32 Teks (F15015)

Ra�er Ra�er

Ra�er

Apex connector

Apex connector

Ra�er

Purlin to to Delta connector4x 12g-24x32 Teks TYP.

Delta connector

Delta connector Delta connectorDelta connector

Apex connector

Apex connector

Indent

Set purlins apart at bottom edge

150 max

20 TYP. 25

20 min

Indent

2x M8 Hex Head Boltsthru top indent

TYP. Apex Purlin Connection Universal Bracket to Ra�er1x M8 Hex Head Bolts thru top indent2x 12g-24x32 Teks at BTM. TYP.

Extra 1x 12g-24x32 Tek at centre (F15015 & F20020)

Purlin to universal bracket4x 12g-14x20 Teks at top & BTM. TYP.

Extra 2x 12g-14x20 Teks at centre (F15015 & F20020)

2x 12g-24x32 Teks at BTM. indent

8x 12g-24x32 Teks at BTM. indent, front & back

4x M8 Hex Head Bolts thru top indent & beam centre

4x 12g-24x32 Teks at top indent, front & back

12g-24x32 Teks, see table for quantity

Apex Purlins

Apex Purlin

Apex Purlin

Apex Purlin

Purlin

Ra�er

Ra�er

Ra�er Ra�er

Ra�er

Apex Purlin

Apex Purlin

Apex Purlin

Ra�er

Front View


END FRAME Side View

Isometric View

Ra�er

Apex connector

Ra�er

Isometric View

F10011 RAFTER ONLY Front View

END FRAME Side View


F15015, F20020 RAFTERS

FIXING AT TOP & BTM FLANGES TYP.

P2 APEX CONNECTION

36FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

P3 INTERNAL PURLIN CONNECTION

P4 RAIL TO SIDE OF POST CONNECTION

P5 RAFTER TO POST CONNECTION

F10011 Universal connector

PostPost

Post Post

RailRail

Rail Rail Rail

Rail

Min. 8mm

Adjust height to suit roof pitch.

Ra�er

Ra�er

Ra�er

Ra�er

Purlin

Purlin

Ra�er Ra�er

Ra�er

Ra�er

1x M8 Hex Head Bolt at mid height thru BKT. to post 2x 12g-14x20 Teks thru BKT. to post at top & BTM

Rail to UNI. connector 4x 12g-14x20 Teks at top & BTM. TYP.Extra 2x 12g-14x20 Teks at centre (F15015 & F20020)

Ra�er to ra�er connector 4x 12g-14x20 Teks thru BKT. to F10011 ra�er6x 12g-14x20 Teks thru BKT. to F15015/F20020 ra�er

Ra�er connector to post1x M8 Hex Head Bolt +5x 12g-24x32 Teks



INTERNAL FRAME (RAIL TO POST)Top View

INTERNAL FRAME Front View Post

Rail

Ra�er

Isometric View

Back View Side View

END FRAME Front View

END FRAME (RAIL TO POST) Top View

P3 INTERNAL PURLIN CONNECTION

P4 RAIL TO SIDE OF POST CONNECTION

P5 RAFTER TO POST CONNECTION


PostPost

Post Post

RailRail

Rail Rail Rail

Rail

Min. 8mm

Adjust height to suit roof pitch.

Ra�er

Ra�er

Ra�er

Ra�er

Purlin

Purlin

Ra�er Ra�er

Ra�er

Ra�er

1x M8 Hex Head Bolt at mid height thru BKT. to post 2x 12g-14x20 Teks thru BKT. to post at top & BTM

Rail to UNI. connector 4x 12g-14x20 Teks at top & BTM. TYP.Extra 2x 12g-14x20 Teks at centre (F15015 & F20020)

Ra�er to ra�er connector 4x 12g-14x20 Teks thru BKT. to F10011 ra�er6x 12g-14x20 Teks thru BKT. to F15015/F20020 ra�er

Ra�er connector to post1x M8 Hex Head Bolt +5x 12g-24x32 Teks



INTERNAL FRAME (RAIL TO POST)Top View

INTERNAL FRAME Front View Post

Rail

Ra�er

Isometric View

Back View Side View

END FRAME Front View

END FRAME (RAIL TO POST) Top View

General Note:

1. All screws are self drilling metal hex head Teks® 12g-14x20 ie. 12 gauge with 14 TPI, 20 long U.N.O Values given are: gauge - threads per inch x length in mm. Tek is a registered trademark of Buildex.

2. The finish for all Teks is Coating Class 4.

3. All bolts are galvanised M8 steel, Grade 4.6 snug-tight U.N.O.

4. Bolts are either hex head or cuphead; see connection details.

5. Use Nylock nut and washer.

NO. OF FASTENERS IN CONNECTION

Purlin Size Purlin to UNI. connector UNI. connector to rafter

F10011 4 3

F15015 6 5

F20020 6 5

Fastener: 12g-14x20 Tek.

37FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

P6 POST BEHIND RAIL CONNECTION

Ra�er

Ra�er

Ra�er

Ra�er

Gable end rail

Min. 8mm

(Optional)Fix gable end rail to post with 2x 12g-14x80 Teks

Ra�er

Ra�erRa�er

Rail

Rail

Rail

Post cap may be required to prevent enclosing of post top end (not supplied)

Ra�er connector1x M8 Hex Head Bolt +2x 12g-14x80 Teks thru BKT. to post2x 12g-14x20 Teks to ra�er at top indent

Ra�er connector to post2x M8 Hex Head Bolt thrurail & post to flub BKT.+ 4x 12g-24x32 Teks

Ra�er to ra�er connector 4x 12g-14x20 Teks at top & BTM. (F10011)+ 2x 12g-14x20 Teks at centre (F15015/F20020)

Adjust this height to suit roof pitch

Rail

Rail

Post

Post

Post

Post Post

Post Post Post

Ra�erFix rail to post with 2x M10 Cuphead Bolts located at beam indents

Post cap may be required to prevent enclosing of post top end (not supplied)

Isometric View

P7 RAFTER TO SIDE OF POST CONNECTION

Isometric View

P8 RAFTER TO POST CONNECTION WITH RAIL BEHIND POST

Isometric View

Front View Side View



38FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

P9 RAFTER TO RAIL CONNECTION

P10 COLLAR-TIE TO RAFTER CONNECTION

15° - 100 COLLAR-TIE CONNECTION 15° - 150 COLLAR-TIE CONNECTION

22.5° - 100 COLLAR-TIE CONNECTION

Isometric View

22.5° - 150 COLLAR-TIE CONNECTION

Isometric ViewFront View

END FRAME INTERNAL FRAME Side View

Ra�er

Gable end rail

Rail

Rail

Post

F10011 Ra�er

Collar-tie connection9x 12g-14x20 Teks at designated holes each side (total 18)




F10011 Ra�er

Ra�er

Collar-tie

Collar-tie connector

F10011 Collar-tie

F10011 Collar-tie

F15015 Collar-tie

F15015 Collar-tie

F15015/F20020 Ra�er

F15015/F20020 Ra�er

Ra�er to ra�er connector4x 12g-14x20 Teks at top & BTM. TYP. +2x 12g-14x20 Teks at centre (F15015/F20020)

Ra�er connector to rail TYP.4x 12g-14x20 Teks (top Teks in double skin)

COLLAR-TIE NOTCH CUT LENGTHS

Collar-tie size

Roof Pitch

15° 22.5°

X Y X Y

F10011 146 40 - -

F15015 321 87 220 93

Note: These dimensions are estimation, check fit-ness before cutting.

39FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

TAB

LE 6

A

Col

lar-T

ie Tr

uss L

oad

Wid

th (m

m),

Roof

Pitc

h: 15

°

Win

d

Blo

ckin

gW

ind

C

lass

Raf

ter

Size

Span

(mm

)

≤30

00

40

00

50

00

60

00

70

00

80

00

90

00

100

00

110

00

No.

of i

nt. p

urlin

s0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+

0/1

/4 s

ides

N1

/ N

2F1

0060

0060

0060

0056

5041

5042

7040

2029

1029

1030

1021

8021

8021

5017

2016

5013

2013

2013

20

F150

7500

7500

7500

7500

7500

7500

7500

6230

6430

5950

4520

4690

4590

3590

3660

3200

2890

2950

2010

2060

2120

1400

1450

1450

1000

1050

1050

F200

9000

9000

9000

9000

9000

9000

9000

9000

9000

8630

8460

8880

6320

6320

6610

3830

3960

3960

2510

2620

2620

1660

1710

1710

1140

1180

1180

N3

F100

5900

4400

4610

3620

2650

2730

2570

1860

1860

1930

1390

1390

1370

1100

1050

840

840

840

F150

7500

7500

7500

7500

5870

6190

5210

3990

4120

3810

2890

3000

2940

2290

2340

2050

1850

1890

1280

1320

1350

900

930

930

640

670

670

F200

9000

9000

9000

8120

8450

8530

6560

6820

6890

5520

5410

5680

4040

4040

4230

2450

2530

2530

1600

1680

1680

1060

1090

1090

730

760

760

N4

F100

3960

2950

3100

2430

1780

1830

1730

1250

1250

1290

930

930

920

740

710

560

560

560

F150

7350

6120

6410

5290

3940

4160

3500

2680

2760

2550

1940

2010

1970

1540

1570

1370

1240

1270

860

880

910

600

620

620

F200

7210

7420

7570

5460

5670

5730

4410

4580

4620

3710

3640

3820

2710

2710

2840

1640

1700

1700

1080

1120

1120

710

730

730

510

510

2 s

ides

N1

/ N

2F1

0060

0050

3051

9041

5030

1031

4029

1021

1022

1021

8015

9015

9015

8012

2012

2094

010

0094

0

F150

7500

7500

7500

7500

6660

7040

6030

4520

4720

4360

3350

3430

3370

2650

2650

2320

2130

2130

1450

1500

1500

1000

1050

1050

730

730

770

F200

9000

9000

9000

9000

9000

9000

7540

7840

7940

6280

6200

6540

4670

4670

4880

2760

2890

2950

1840

1900

1950

1200

1250

1250

820

860

860

N3

F100

4290

3210

3320

2650

1930

2010

1860

1350

1410

1390

1010

1010

1010

780

780

600

640

600

F150

7500

6650

6970

5790

4260

4500

3860

2890

3020

2790

2140

2200

2160

1700

1700

1480

1360

1360

930

960

960

640

670

670

F200

7940

8150

8260

5950

6190

6270

4820

5020

5080

4020

3 970

4180

2980

2980

3120

1770

1850

1890

1180

1210

1250

770

800

800

520

550

550

N4

F100

2880

2160

2230

1780

1290

1350

1250

900

950

930

680

680

670

520

520

F150

5400

4470

4680

3890

2860

3020

2590

1940

2030

1870

1440

1470

1450

1140

1140

1000

910

910

620

640

640

F200

5330

5480

5550

4000

4160

4210

3240

3370

3410

2700

2660

2810

2000

2000

2100

1180

1240

1270

790

810

840

510

540

540

3 s

ides

N1

/ N

2F1

0057

0041

9045

2035

2025

1026

4025

1018

1018

1018

4013

4013

4013

6010

7010

0081

081

081

0

F150

7500

7500

7500

7500

5650

6030

5130

3820

4020

3680

2850

2930

2870

2220

2290

2010

1820

1820

1220

1280

1280

850

900

900

590

640

640

F200

9000

9000

9000

7920

8170

8300

6430

6640

6740

5360

5280

5530

3950

3950

4090

2380

2450

2450

1560

1620

1620

1000

1050

1050

680

730

730

N3

F100

3640

2680

2890

2250

1600

1690

1600

1150

1150

1180

850

850

870

680

640

520

520

520

F150

6760

5680

6010

4910

3620

3860

3280

2440

2570

2360

1820

1870

1830

1420

1470

1280

1160

1160

780

820

820

540

570

570

F200

6650

6860

6970

5070

5230

5310

4120

4250

4310

3430

3380

3540

2520

2520

2620

1520

1560

1560

1000

1030

1030

640

670

670

N4

F100

2450

1800

1940

1510

1080

1130

1080

770

770

790

570

570

580

F150

4540

3820

4030

3290

2430

2590

2200

1640

1730

1580

1220

1260

1230

950

980

860

780

780

520

550

550

F200

4470

4610

4680

3400

3510

3560

2760

2850

2890

2300

2270

2370

1690

1690

1760

1020

1050

1050

670

690

690

Not

es:

1. F

or in

term

edia

te sp

an, u

se in

terp

olat

ion

betw

een

the

valu

es o

f the

sam

e ca

tego

ry.

2. T

he v

alue

s in

the

tabl

e ar

e th

e m

axim

um d

esig

n lo

ad w

idth

in m

m.

3. D

o no

t use

thes

e ta

bles

for t

he d

esig

n of

trus

s/ra

fter i

n ro

of p

itch

othe

r tha

n 15

deg

rees

.4.

For

trus

s/ra

fter w

ith 2

or m

ore

row

s of i

nter

nal p

rulin

s on

each

side

of r

idge

, sel

ect l

oad

wid

th in

the

“2+

” co

lum

ns.

5. F

or tr

uss w

ith F

150/

F200

rafte

rs, u

se F

150

colla

r-tie

, for

F10

0 ra

fter,

use

F100

11 c

olla

r-tie

.

4.4

QU

ICK

SEL

ECTI

ON

TA

BLE

S

TA

BL

E 6

A

CO

LL

AR

-TIE

TR

US

S L

OA

D W

IDT

H (

mm

)R

OO

F P

ITC

H:

15

o

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

F1

00

60

00

60

00

60

00

56

50

41

50

42

70

40

20

29

10

29

10

30

10

21

80

21

80

21

50

17

20

16

50

13

20

13

20

13

20

F1

50

75

00

75

00

75

00

75

00

75

00

75

00

75

00

62

30

64

30

59

50

45

20

46

90

45

90

35

90

36

60

32

00

28

90

29

50

20

10

20

60

21

20

14

00

14

50

14

50

10

00

10

50

10

50

F2

00

90

00

90

00

90

00

90

00

90

00

90

00

90

00

90

00

90

00

86

30

84

60

88

80

63

20

63

20

66

10

38

30

39

60

39

60

25

10

26

20

26

20

16

60

17

10

17

10

11

40

11

80

11

80

F1

00

59

00

44

00

46

10

36

20

26

50

27

30

25

70

18

60

18

60

19

30

13

90

13

90

13

70

11

00

10

50

84

08

40

84

0

F1

50

75

00

75

00

75

00

75

00

58

70

61

90

52

10

39

90

41

20

38

10

28

90

30

00

29

40

22

90

23

40

20

50

18

50

18

90

12

80

13

20

13

50

90

09

30

93

06

40

67

06

70

F2

00

90

00

90

00

90

00

81

20

84

50

85

30

65

60

68

20

68

90

55

20

54

10

56

80

40

40

40

40

42

30

24

50

25

30

25

30

16

00

16

80

16

80

10

60

10

90

10

90

73

07

60

76

0

F1

00

39

60

29

50

31

00

24

30

17

80

18

30

17

30

12

50

12

50

12

90

93

09

30

92

07

40

71

05

60

56

05

60

F1

50

73

50

61

20

64

10

52

90

39

40

41

60

35

00

26

80

27

60

25

50

19

40

20

10

19

70

15

40

15

70

13

70

12

40

12

70

86

08

80

91

06

00

62

06

20

F2

00

72

10

74

20

75

70

54

60

56

70

57

30

44

10

45

80

46

20

37

10

36

40

38

20

27

10

27

10

28

40

16

40

17

00

17

00

10

80

11

20

11

20

71

07

30

73

05

10

51

0

F1

00

60

00

50

30

51

90

41

50

30

10

31

40

29

10

21

10

22

10

21

80

15

90

15

90

15

80

12

20

12

20

94

01

00

09

40

F1

50

75

00

75

00

75

00

75

00

66

60

70

40

60

30

45

20

47

20

43

60

33

50

34

30

33

70

26

50

26

50

23

20

21

30

21

30

14

50

15

00

15

00

10

00

10

50

10

50

73

07

30

77

0

F2

00

90

00

90

00

90

00

90

00

90

00

90

00

75

40

78

40

79

40

62

80

62

00

65

40

46

70

46

70

48

80

27

60

28

90

29

50

18

40

19

00

19

50

12

00

12

50

12

50

82

08

60

86

0

F1

00

42

90

32

10

33

20

26

50

19

30

20

10

18

60

13

50

14

10

13

90

10

10

10

10

10

10

78

07

80

60

06

40

60

0

F1

50

75

00

66

50

69

70

57

90

42

60

45

00

38

60

28

90

30

20

27

90

21

40

22

00

21

60

17

00

17

00

14

80

13

60

13

60

93

09

60

96

06

40

67

06

70

F2

00

79

40

81

50

82

60

59

50

61

90

62

70

48

20

50

20

50

80

40

20

39

70

41

80

29

80

29

80

31

20

17

70

18

50

18

90

11

80

12

10

12

50

77

08

00

80

05

20

55

05

50

F1

00

28

80

21

60

22

30

17

80

12

90

13

50

12

50

90

09

50

93

06

80

68

06

70

52

05

20

F1

50

54

00

44

70

46

80

38

90

28

60

30

20

25

90

19

40

20

30

18

70

14

40

14

70

14

50

11

40

11

40

10

00

91

09

10

62

06

40

64

0

F2

00

53

30

54

80

55

50

40

00

41

60

42

10

32

40

33

70

34

10

27

00

26

60

28

10

20

00

20

00

21

00

11

80

12

40

12

70

79

08

10

84

05

10

54

05

40

F1

00

57

00

41

90

45

20

35

20

25

10

26

40

25

10

18

10

18

10

18

40

13

40

13

40

13

60

10

70

10

00

81

08

10

81

0

F1

50

75

00

75

00

75

00

75

00

56

50

60

30

51

30

38

20

40

20

36

80

28

50

29

30

28

70

22

20

22

90

20

10

18

20

18

20

12

20

12

80

12

80

85

09

00

90

05

90

64

06

40

F2

00

90

00

90

00

90

00

79

20

81

70

83

00

64

30

66

40

67

40

53

60

52

80

55

30

39

50

39

50

40

90

23

80

24

50

24

50

15

60

16

20

16

20

10

00

10

50

10

50

68

07

30

73

0

F1

00

36

40

26

80

28

90

22

50

16

00

16

90

16

00

11

50

11

50

11

80

85

08

50

87

06

80

64

05

20

52

05

20

F1

50

67

60

56

80

60

10

49

10

36

20

38

60

32

80

24

40

25

70

23

60

18

20

18

70

18

30

14

20

14

70

12

80

11

60

11

60

78

08

20

82

05

40

57

05

70

F2

00

66

50

68

60

69

70

50

70

52

30

53

10

41

20

42

50

43

10

34

30

33

80

35

40

25

20

25

20

26

20

15

20

15

60

15

60

10

00

10

30

10

30

64

06

70

67

0

F1

00

24

50

18

00

19

40

15

10

10

80

11

30

10

80

77

07

70

79

05

70

57

05

80

F1

50

45

40

38

20

40

30

32

90

24

30

25

90

22

00

16

40

17

30

15

80

12

20

12

60

12

30

95

09

80

86

07

80

78

05

20

55

05

50

F2

00

44

70

46

10

46

80

34

00

35

10

35

60

27

60

28

50

28

90

23

00

22

70

23

70

16

90

16

90

17

60

10

20

10

50

10

50

67

06

90

69

0

No

te:

1.

Fo

r in

term

ed

iate

sp

an

, u

se

in

terp

ola

tio

n b

etw

ee

n t

he

va

lue

s o

f th

e s

am

e c

ate

go

ry.

2.

Th

e v

alu

es in

th

e t

ab

le a

re t

he

ma

xim

um

de

sig

n lo

ad

wid

th in

mm

.

3.

Do

no

t u

se

th

ese

ta

ble

s f

or

the

de

sig

n o

f tr

uss/r

aft

er

in r

oo

f p

itch

oth

er

tha

n 1

5 d

eg

ree

s.

4.

Fo

r tr

uss/r

aft

er

with

2 o

r m

ore

ro

ws o

f in

tern

al p

rulin

s o

n e

ach

sid

e o

f ri

dg

e,

se

lect

loa

d w

idth

in

th

e "

2+

" co

lum

ns.

5.

Fo

r tr

uss w

ith

F1

50

/F2

00

ra

fte

rs,

use

F1

50

co

lla

r-tie

, fo

r F

10

0 r

aft

er,

use

F1

00

11

co

lla

r-tie

.

N1

/N2

2 s

ide

sN

3

N4

N1

/N2

3 s

ide

sN

3

N4

WIN

D

CL

AS

S

WIN

D

BL

OC

KIN

G

RA

FT

ER

SIZ

E

SP

AN

(m

m)

30

00

40

00

50

00

60

00

70

00

80

00

90

00

10

00

01

10

00

No

. o

f in

t. p

url

ins

N1

/N2

0/1

/4 s

ide

sN

3

N4

40FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

TAB

LE 6

B

Col

lar-T

ie Tr

uss L

oad

Wid

th (m

m),

Roof

Pitc

h: 2

2.5°

Win

d

Blo

ckin

gW

ind

C

lass

Raf

ter

Size

Span

(mm

)

≤300

04

00

05

00

06

00

07

00

08

00

09

00

010

00

011

00

0

No.

of i

nt. p

urlin

s0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+

0/1

/4 s

ides

N1

/ N

2F1

0057

9053

1057

9047

0035

0036

2031

8024

1024

1020

1017

7016

9013

7013

7013

1096

010

8010

20

F150

7500

7500

7500

7500

6760

7360

6180

4920

5310

4020

3780

3940

2750

2960

2960

1930

2350

2350

1440

1930

1870

1110

1440

1490

830

1050

1090

F200

9000

9000

9000

9000

9000

9000

8780

8490

9000

6590

6590

7160

4620

5240

5580

3250

3560

3680

2140

2300

2360

1440

1590

1640

1050

1140

1180

N3

F100

3700

3390

3700

3010

2240

2310

2030

1540

1540

1280

1130

1080

880

880

830

610

690

650

F150

7500

6490

6900

5940

4320

4710

3950

3150

3390

2570

2420

2520

1760

1890

1890

1230

1500

1500

920

1230

1200

710

920

950

530

670

700

F200

8850

9000

9000

6790

7260

7490

5620

5430

6050

4220

4220

4580

2950

3350

3570

2080

2270

2350

1370

1470

1510

920

1010

1050

670

730

750

N4

F100

2490

2280

2490

2020

1500

1550

1370

1030

1030

860

760

720

590

590

560

F150

6090

4360

4630

3990

2900

3160

2650

2110

2280

1730

1620

1690

1180

1270

1270

830

1010

1010

620

830

800

620

640

F200

5950

6360

6570

4560

4870

5030

3770

3650

4060

2830

2830

3080

1980

2250

2400

1400

1530

1580

920

990

1010

620

680

700

500

2 s

ides

N1

/ N

2F1

0040

2037

0040

2032

5024

1025

3024

1017

3016

4016

9012

0012

0013

1096

089

090

072

072

0

F150

7500

7080

7500

6880

4700

5190

4920

3470

3670

3620

2650

2730

2750

2060

2060

1930

1620

1620

1340

1340

1340

910

1010

1010

650

740

740

F200

9000

9000

9000

7360

7960

8200

6080

5980

6560

5470

4580

4990

3510

3650

3860

2290

2470

2530

1500

1600

1660

1010

1110

1110

740

790

830

N3

F100

2570

2360

2570

2080

1540

1620

1540

1110

1050

1080

770

770

830

610

570

570

F150

6280

4530

4840

4400

3010

3320

3150

2220

2340

2310

1690

1750

1760

1320

1320

1230

1040

1040

850

850

850

580

640

640

F200

6180

6590

6790

4710

5090

5250

3890

3830

4200

3500

2930

3190

2250

2340

2470

1460

1580

1620

960

1030

1060

640

710

710

500

530

N4

F100

1730

1590

1730

1400

1030

1090

1030

740

700

720

510

510

560

F150

4220

3040

3250

2950

2020

2230

2110

1490

1570

1550

1140

1170

1180

880

880

830

700

700

570

570

570

F200

4150

4420

4560

3160

3420

3520

2610

2570

2820

2350

1970

2140

1510

1570

1660

980

1060

1090

640

690

710

3 s

ides

N1

/ N

2F1

0033

8030

5033

8027

7020

5020

5020

2014

4013

5014

4010

4096

010

3075

075

078

060

060

0

F150

7500

5950

6270

5670

3980

4340

4050

2890

3090

2970

2170

2250

2270

1720

1720

1560

1380

1380

1120

1120

1070

770

820

860

570

610

610

F200

8040

8530

8850

6150

6630

6760

5110

4920

5500

4580

3780

4180

2890

3030

3240

1870

2050

2110

1230

1340

1390

820

910

910

610

650

700

N3

F100

2160

1950

2160

1770

1310

1310

1290

920

860

920

660

610

660

500

F150

5250

3810

4010

3630

2540

2780

2590

1850

1970

1900

1390

1440

1450

1100

1100

1000

880

880

720

720

680

520

550

F200

5150

5460

5660

3940

4240

4320

3270

3150

3520

2930

2420

2670

1850

1940

2070

1190

1310

1350

780

850

890

520

580

580

N4

F100

1450

1310

1450

1190

880

880

870

620

580

620

F150

3520

2560

2690

2430

1710

1860

1740

1240

1320

1280

930

960

970

740

740

670

590

590

F200

3460

3660

3800

2640

2850

2900

2200

2110

2360

1970

1620

1790

1240

1300

1390

800

880

900

530

570

590

Not

es:

1. F

or in

term

edia

te sp

an, u

se in

terp

olat

ion

betw

een

the

valu

es o

f the

sam

e ca

tego

ry.

2. T

he v

alue

s in

the

tabl

e ar

e th

e m

axim

um d

esig

n lo

ad w

idth

in m

m.

3. D

o no

t use

thes

e ta

bles

for t

he d

esig

n of

trus

s/ra

fter i

n ro

of p

itch

othe

r tha

n 22

.5 d

egre

es.

4. F

or tr

uss/

rafte

r with

2 o

r mor

e ro

ws o

f int

erna

l pru

lins o

n ea

ch si

de o

f rid

ge, s

elec

t loa

d w

idth

in th

e “2

+”

colu

mns

5. F

or tr

uss w

ith F

150/

F200

rafte

rs, u

se F

150

colla

r-tie

, for

F10

0 ra

fter,

use

F100

11 c

olla

r-tie

.

TA

BL

E 6

B

CO

LL

AR

-TIE

TR

US

S L

OA

D W

IDT

H (

mm

)R

OO

F P

ITC

H:

22

.5o

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

F1

00

57

90

53

10

57

90

47

00

35

00

36

20

31

80

24

10

24

10

20

10

17

70

16

90

13

70

13

70

13

10

96

01

08

01

02

0

F1

50

75

00

75

00

75

00

75

00

67

60

73

60

61

80

49

20

53

10

40

20

37

80

39

40

27

50

29

60

29

60

19

30

23

50

23

50

14

40

19

30

18

70

11

10

14

40

14

90

83

01

05

01

09

0

F2

00

90

00

90

00

90

00

90

00

90

00

90

00

87

80

84

90

90

00

65

90

65

90

71

60

46

20

52

40

55

80

32

50

35

60

36

80

21

40

23

00

23

60

14

40

15

90

16

40

10

50

11

40

11

80

F1

00

37

00

33

90

37

00

30

10

22

40

23

10

20

30

15

40

15

40

12

80

11

30

10

80

88

08

80

83

06

10

69

06

50

F1

50

75

00

64

90

69

00

59

40

43

20

47

10

39

50

31

50

33

90

25

70

24

20

25

20

17

60

18

90

18

90

12

30

15

00

15

00

92

01

23

01

20

07

10

92

09

50

53

06

70

70

0

F2

00

88

50

90

00

90

00

67

90

72

60

74

90

56

20

54

30

60

50

42

20

42

20

45

80

29

50

33

50

35

70

20

80

22

70

23

50

13

70

14

70

15

10

92

01

01

01

05

06

70

73

07

50

F1

00

24

90

22

80

24

90

20

20

15

00

15

50

13

70

10

30

10

30

86

07

60

72

05

90

59

05

60

F1

50

60

90

43

60

46

30

39

90

29

00

31

60

26

50

21

10

22

80

17

30

16

20

16

90

11

80

12

70

12

70

83

01

01

01

01

06

20

83

08

00

62

06

40

F2

00

59

50

63

60

65

70

45

60

48

70

50

30

37

70

36

50

40

60

28

30

28

30

30

80

19

80

22

50

24

00

14

00

15

30

15

80

92

09

90

10

10

62

06

80

70

05

00

F1

00

40

20

37

00

40

20

32

50

24

10

25

30

24

10

17

30

16

40

16

90

12

00

12

00

13

10

96

08

90

90

07

20

72

0

F1

50

75

00

70

80

75

00

68

80

47

00

51

90

49

20

34

70

36

70

36

20

26

50

27

30

27

50

20

60

20

60

19

30

16

20

16

20

13

40

13

40

13

40

91

01

01

01

01

06

50

74

07

40

F2

00

90

00

90

00

90

00

73

60

79

60

82

00

60

80

59

80

65

60

54

70

45

80

49

90

35

10

36

50

38

60

22

90

24

70

25

30

15

00

16

00

16

60

10

10

11

10

11

10

74

07

90

83

0

F1

00

25

70

23

60

25

70

20

80

15

40

16

20

15

40

11

10

10

50

10

80

77

07

70

83

06

10

57

05

70

F1

50

62

80

45

30

48

40

44

00

30

10

33

20

31

50

22

20

23

40

23

10

16

90

17

50

17

60

13

20

13

20

12

30

10

40

10

40

85

08

50

85

05

80

64

06

40

F2

00

61

80

65

90

67

90

47

10

50

90

52

50

38

90

38

30

42

00

35

00

29

30

31

90

22

50

23

40

24

70

14

60

15

80

16

20

96

01

03

01

06

06

40

71

07

10

50

05

30

F1

00

17

30

15

90

17

30

14

00

10

30

10

90

10

30

74

07

00

72

05

10

51

05

60

F1

50

42

20

30

40

32

50

29

50

20

20

22

30

21

10

14

90

15

70

15

50

11

40

11

70

11

80

88

08

80

83

07

00

70

05

70

57

05

70

F2

00

41

50

44

20

45

60

31

60

34

20

35

20

26

10

25

70

28

20

23

50

19

70

21

40

15

10

15

70

16

60

98

01

06

01

09

06

40

69

07

10

F1

00

33

80

30

50

33

80

27

70

20

50

20

50

20

20

14

40

13

50

14

40

10

40

96

01

03

07

50

75

07

80

60

06

00

F1

50

75

00

59

50

62

70

56

70

39

80

43

40

40

50

28

90

30

90

29

70

21

70

22

50

22

70

17

20

17

20

15

60

13

80

13

80

11

20

11

20

10

70

77

08

20

86

05

70

61

06

10

F2

00

80

40

85

30

88

50

61

50

66

30

67

60

51

10

49

20

55

00

45

80

37

80

41

80

28

90

30

30

32

40

18

70

20

50

21

10

12

30

13

40

13

90

82

09

10

91

06

10

65

07

00

F1

00

21

60

19

50

21

60

17

70

13

10

13

10

12

90

92

08

60

92

06

60

61

06

60

50

0

F1

50

52

50

38

10

40

10

36

30

25

40

27

80

25

90

18

50

19

70

19

00

13

90

14

40

14

50

11

00

11

00

10

00

88

08

80

72

07

20

68

05

20

55

0

F2

00

51

50

54

60

56

60

39

40

42

40

43

20

32

70

31

50

35

20

29

30

24

20

26

70

18

50

19

40

20

70

11

90

13

10

13

50

78

08

50

89

05

20

58

05

80

F1

00

14

50

13

10

14

50

11

90

88

08

80

87

06

20

58

06

20

F1

50

35

20

25

60

26

90

24

30

17

10

18

60

17

40

12

40

13

20

12

80

93

09

60

97

07

40

74

06

70

59

05

90

F2

00

34

60

36

60

38

00

26

40

28

50

29

00

22

00

21

10

23

60

19

70

16

20

17

90

12

40

13

00

13

90

80

08

80

90

05

30

57

05

90

No

te:

1.

Fo

r in

term

ed

iate

sp

an

, u

se

in

terp

ola

tio

n b

etw

ee

n t

he

va

lue

s o

f th

e s

am

e c

ate

go

ry.

2.

Th

e v

alu

es in

th

e t

ab

le a

re t

he

ma

xim

um

de

sig

n lo

ad

wid

th in

mm

.

3.

Do

no

t u

se

th

ese

ta

ble

s f

or

the

de

sig

n o

f tr

uss/r

aft

er

in r

oo

f p

itch

oth

er

tha

n 2

2.5

de

gre

es.

4.

Fo

r tr

uss/r

aft

er

with

2 o

r m

ore

ro

ws o

f in

tern

al p

rulin

s o

n e

ach

sid

e o

f ri

dg

e,

se

lect

loa

d w

idth

in

th

e "

2+

" co

lum

ns

5.

Fo

r tr

uss w

ith

F1

50

/F2

00

ra

fte

rs,

use

F1

50

co

lla

r-tie

, fo

r F

10

0 r

aft

er,

use

F1

00

11

co

lla

r-tie

.

N1

/N2

2 s

ide

sN

3

N4

N1

/N2

3 s

ide

sN

3

N4

WIN

D

CL

AS

S

WIN

D

BL

OC

KIN

G

RA

FT

ER

SIZ

E

SP

AN

(m

m)

30

00

40

00

50

00

60

00

70

00

80

00

90

00

10

00

01

10

00

No

. o

f in

t. p

url

ins

N1

/N2

0/1

/4 s

ide

sN

3

N4

41FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

TAB

LE 7

A

Porta

l Fra

me

Rafte

r Loa

d W

idth

(mm

), Ro

of P

itch:

15°

Win

d

Blo

ckin

gW

ind

C

lass

Raf

ter

Size

Span

(mm

)

≤30

00

40

00

50

00

60

00

70

00

80

00

90

00

100

00

No.

of i

nt. p

urlin

s0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+

0/1

/4 s

ides

N1

/ N

2F1

0058

6060

0060

0033

9028

9028

9017

1015

0014

0010

0083

083

0

F150

7500

7500

7500

7500

7500

7500

5130

5430

5330

3520

3180

3100

2290

1940

1940

1500

1320

1250

1060

890

890

750

650

650

F200

9000

9000

9000

9000

9000

9000

9000

9000

9000

6790

7790

8040

4880

5310

5240

3580

3580

3450

2730

2510

2450

2110

1810

1760

N3

F100

3750

4070

4180

2170

1850

1850

1090

960

900

640

530

530

F150

7500

7500

7500

5150

5630

5790

3280

3470

3410

2250

2030

1980

1470

1240

1240

960

840

800

670

570

570

F200

9000

9000

9000

9000

9000

9000

6310

7210

7400

4340

4990

5150

3120

3400

3350

2290

2290

2210

1750

1600

1570

1350

1150

1120

N4

F100

2520

2740

2810

1460

1240

1240

730

640

600

F150

5840

6120

6410

3460

3780

3890

2200

2330

2290

1510

1370

1330

980

830

830

640

560

540

F200

9000

9000

9000

6540

7080

7510

4230

4840

4970

2920

3350

3460

2100

2280

2250

1540

1540

1480

1170

1080

1050

900

770

750

2 s

ides

N1

/ N

2F1

0043

6046

9046

9025

1021

3021

3012

0011

0011

00

F150

7500

7500

7500

5910

6540

6660

3720

4020

3920

2510

2260

2260

1650

1430

1430

1130

940

940

780

670

670

550

F200

9000

9000

9000

9000

9000

9000

7240

8250

8450

4940

5780

5860

3590

3880

3800

2640

2570

2570

2010

1840

1780

1500

1300

1300

N3

F100

2790

3000

3000

1600

1360

1360

770

700

700

F150

6330

6650

6970

3780

4180

4260

2380

2570

2510

1600

1440

1440

1050

910

910

720

600

600

500

F200

9000

9000

9000

7160

7720

8210

4630

5280

5400

3160

3700

3750

2290

2480

2430

1690

1650

1650

1280

1180

1140

960

830

830

N4

F100

1870

2010

2010

1080

910

910

510

F150

4250

4470

4680

2540

2810

2860

1600

1730

1680

1080

970

970

710

610

610

F200

8000

7850

7930

4810

5190

5510

3110

3540

3630

2120

2480

2520

1540

1660

1630

1130

1100

1100

860

790

760

640

560

560

3 s

ides

N1

/ N

2F1

0036

8040

2040

2021

3017

6017

6010

00

F150

7500

7500

7500

5030

5530

5650

3210

3420

3320

2180

1920

1920

1430

1220

1220

940

810

810

670

550

550

F200

9000

9000

9000

9000

9000

9000

6130

7040

7140

4190

4860

5030

3010

3300

3230

2260

2200

2130

1730

1560

1500

1300

1100

1100

N3

F100

2360

2570

2570

1360

1120

1120

640

F150

5360

5680

6010

3210

3540

3620

2060

2180

2120

1390

1230

1230

910

780

780

600

520

520

F200

9000

9000

9000

6110

6600

7000

3920

4500

4570

2680

3110

3210

1930

2110

2060

1440

1400

1360

1100

1000

960

830

700

700

N4

F100

1580

1730

1730

910

750

750

F150

3600

3820

4030

2160

2370

2430

1380

1470

1420

930

820

820

610

520

520

F200

6770

6700

6770

4110

4430

4700

2630

3020

3070

1800

2090

2160

1290

1420

1390

970

940

910

740

670

640

560

Not

es:

1. F

or in

term

edia

te sp

an, u

se in

terp

olat

ion

betw

een

the

valu

es o

f the

sam

e ca

tego

ry.

2. T

he v

alue

s in

the

tabl

e ar

e th

e m

axim

um d

esig

n lo

ad w

idth

in m

m.

3. D

o no

t use

thes

e ta

bles

for t

he d

esig

n of

trus

s/ra

fter i

n ro

of p

itch

othe

r tha

n 15

deg

rees

.4.

For

trus

s/ra

fter w

ith 2

or m

ore

row

s of i

nter

nal p

rulin

s on

each

side

of r

idge

, sel

ect l

oad

wid

th in

the

“2+

” co

lum

ns

TA

BL

E 7

A

PO

RT

AL

FR

AM

E R

AF

TE

R L

OA

D W

IDT

H (

mm

)R

OO

F P

ITC

H:

15

o

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

F100

5860

6000

6000

3390

2890

2890

1710

1500

1400

1000

830

830

F150

7500

7500

7500

7500

7500

7500

5130

5430

5330

3520

3180

3100

2290

1940

1940

1500

1320

1250

1060

890

890

750

650

650

F200

9000

9000

9000

9000

9000

9000

9000

9000

9000

6790

7790

8040

4880

5310

5240

3580

3580

3450

2730

2510

2450

2110

1810

1760

F100

3750

4070

4180

2170

1850

1850

1090

960

900

640

530

530

F150

7500

7500

7500

5150

5630

5790

3280

3470

3410

2250

2030

1980

1470

1240

1240

960

840

800

670

570

570

F200

9000

9000

9000

9000

9000

9000

6310

7210

7400

4340

4990

5150

3120

3400

3350

2290

2290

2210

1750

1600

1570

1350

1150

1120

F100

2520

2740

2810

1460

1240

1240

730

640

600

F150

5840

6120

6410

3460

3780

3890

2200

2330

2290

1510

1370

1330

980

830

830

640

560

540

F200

9000

9000

9000

6540

7080

7510

4230

4840

4970

2920

3350

3460

2100

2280

2250

1540

1540

1480

1170

1080

1050

900

770

750

F100

4360

4690

4690

2510

2130

2130

1200

1100

1100

F150

7500

7500

7500

5910

6540

6660

3720

4020

3920

2510

2260

2260

1650

1430

1430

1130

940

940

780

670

670

550

F200

9000

9000

9000

9000

9000

9000

7240

8250

8450

4940

5780

5860

3590

3880

3800

2640

2570

2570

2010

1840

1780

1500

1300

1300

F100

2790

3000

3000

1600

1360

1360

770

700

700

F150

6330

6650

6970

3780

4180

4260

2380

2570

2510

1600

1440

1440

1050

910

910

720

600

600

500

F200

9000

9000

9000

7160

7720

8210

4630

5280

5400

3160

3700

3750

2290

2480

2430

1690

1650

1650

1280

1180

1140

960

830

830

F100

1870

2010

2010

1080

910

910

510

F150

4250

4470

4680

2540

2810

2860

1600

1730

1680

1080

970

970

710

610

610

F200

8000

7850

7930

4810

5190

5510

3110

3540

3630

2120

2480

2520

1540

1660

1630

1130

1100

1100

860

790

760

640

560

560

F100

3680

4020

4020

2130

1760

1760

1000

F150

7500

7500

7500

5030

5530

5650

3210

3420

3320

2180

1920

1920

1430

1220

1220

940

810

810

670

550

550

F200

9000

9000

9000

9000

9000

9000

6130

7040

7140

4190

4860

5030

3010

3300

3230

2260

2200

2130

1730

1560

1500

1300

1100

1100

F100

2360

2570

2570

1360

1120

1120

640

F150

5360

5680

6010

3210

3540

3620

2060

2180

2120

1390

1230

1230

910

780

780

600

520

520

F200

9000

9000

9000

6110

6600

7000

3920

4500

4570

2680

3110

3210

1930

2110

2060

1440

1400

1360

1100

1000

960

830

700

700

F100

1580

1730

1730

910

750

750

F150

3600

3820

4030

2160

2370

2430

1380

1470

1420

930

820

820

610

520

520

F200

6770

6700

6770

4110

4430

4700

2630

3020

3070

1800

2090

2160

1290

1420

1390

970

940

910

740

670

640

560

No

te:

1. F

or

inte

rmedia

te s

pan, use inte

rpola

tion b

etw

een the v

alu

es o

f th

e s

am

e c

ate

gory

.

2. T

he v

alu

es in the table

are

the m

axim

um

desig

n load w

idth

in m

m.

3. D

o n

ot use these table

s for

the d

esig

n o

f tr

uss/r

after

in r

oof pitch o

ther

than 1

5 d

egre

es.

4. F

or

truss/r

after

with 2

or

more

row

s o

f in

tern

al pru

lins o

n e

ach s

ide o

f ridge, sele

ct lo

ad w

idth

in the "

2+

" colu

mns

3 s

ides

N1/N

2

N3

N4

7000

2 s

ides

N1/N

2

N3

N4

8000

9000

10000

No. of in

t. p

urlin

s

0/1

/4 s

ides

N1/N

2

N3

N4

WIN

D

BLO

CK

ING

WIN

D

CLA

SS

RA

FT

ER

SIZ

E

SP

AN

(m

m)

3000

4000

5000

6000

42FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

TAB

LE 7

B

Porta

l Fra

me

Rafte

r Loa

d W

idth

(mm

), Ro

of P

itch:

22.

5°

Win

d

Blo

ckin

gW

ind

C

lass

Raf

ter

Size

Span

(mm

)

≤30

00

40

00

50

00

60

00

70

00

80

00

90

00

100

00

No.

of i

nt. p

urlin

s0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+0

12

+

0/1

/4 s

ides

N1

/ N

2F1

0041

8048

2048

2022

9020

5020

5011

5010

6010

60

F150

7500

7500

7500

5670

6630

6760

3670

3860

3760

2490

2170

2170

1510

1370

1370

1020

900

900

690

640

640

530

F200

9000

9000

9000

9000

9000

9000

7050

8400

8690

4820

5790

5870

3440

3720

3650

2530

2470

2470

1930

1710

1710

1400

1250

1250

N3

F100

2670

3090

3090

1460

1310

1310

740

670

670

F150

6280

6590

7000

3630

4240

4320

2340

2470

2410

1590

1390

1390

970

880

880

650

570

570

F200

9000

9000

9000

6950

7640

8190

4510

5370

5560

3090

3700

3760

2200

2380

2340

1620

1580

1580

1230

1090

1090

890

800

800

N4

F100

1790

2070

2070

980

880

880

490

F150

4220

4420

4700

2430

2850

2900

1570

1660

1610

1070

930

930

650

590

590

F200

7820

7890

7950

4670

5130

5500

3030

3610

3730

2070

2490

2520

1480

1600

1570

1090

1060

1060

830

730

730

600

530

530

2 s

ides

N1

/ N

2F1

0028

9033

8033

8015

6014

4014

40

F150

6760

7240

7500

3980

4580

4700

2510

2700

2600

1690

1520

1520

1030

960

960

720

600

600

F200

9000

9000

9000

7600

8330

8930

4920

5890

6080

3380

4100

4100

2410

2620

2550

1750

1750

1690

1340

1230

1180

960

860

860

N3

F100

1850

2160

2160

1000

920

920

F150

4320

4630

4940

2540

2930

3010

1600

1730

1660

1080

970

970

660

610

610

F200

8130

8130

8340

4860

5330

5710

3150

3770

3890

2160

2620

2620

1540

1670

1630

1120

1120

1080

850

780

750

610

550

550

N4

F100

1240

1450

1450

670

620

620

F150

2900

3110

3320

1710

1970

2020

1070

1160

1120

720

650

650

F200

5460

5460

5600

3270

3580

3840

2110

2530

2610

1450

1760

1760

1030

1120

1090

750

750

720

570

530

500

3 s

ides

N1

/ N

2F1

0024

1027

3028

9013

2012

0012

00

F150

5630

5950

6430

3250

3860

3860

2120

2220

2220

1440

1280

1280

890

750

750

600

F200

9000

9000

9000

6270

7000

7480

4050

4820

5020

2810

3380

3380

2000

2130

2130

1440

1440

1440

1120

1010

1010

820

720

720

N3

F100

1540

1750

1850

840

770

770

F150

3600

3810

4120

2080

2470

2470

1350

1420

1420

920

820

820

570

F200

6790

6790

6900

4010

4480

4790

2590

3090

3210

1800

2160

2160

1280

1360

1360

920

920

920

720

650

650

520

N4

F100

1030

1170

1240

570

510

510

F150

2420

2560

2760

1400

1660

1660

910

950

950

620

550

550

F200

4560

4560

4630

2690

3010

3210

1740

2070

2150

1210

1450

1450

860

910

910

620

620

620

Not

es:

1. F

or in

term

edia

te sp

an, u

se in

terp

olat

ion

betw

een

the

valu

es o

f the

sam

e ca

tego

ry.

2. T

he v

alue

s in

the

tabl

e ar

e th

e m

axim

um d

esig

n lo

ad w

idth

in m

m.

3. D

o no

t use

thes

e ta

bles

for t

he d

esig

n of

trus

s/ra

fter i

n ro

of p

itch

othe

r tha

n 22

.5 d

egre

es.

4. F

or tr

uss/

rafte

r with

2 o

r mor

e ro

ws o

f int

erna

l pru

lins o

n ea

ch si

de o

f rid

ge, s

elec

t loa

d w

idth

in th

e “2

+”

colu

mns

TA

BL

E 7

B

PO

RT

AL

FR

AM

E R

AF

TE

R L

OA

D W

IDT

H (

mm

)R

OO

F P

ITC

H:

22.5

o

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

01

2+

F100

4180

4820

4820

2290

2050

2050

1150

1060

1060

F150

7500

7500

7500

5670

6630

6760

3670

3860

3760

2490

2170

2170

1510

1370

1370

1020

900

900

690

640

640

530

F200

9000

9000

9000

9000

9000

9000

7050

8400

8690

4820

5790

5870

3440

3720

3650

2530

2470

2470

1930

1710

1710

1400

1250

1250

F100

2670

3090

3090

1460

1310

1310

740

670

670

F150

6280

6590

7000

3630

4240

4320

2340

2470

2410

1590

1390

1390

970

880

880

650

570

570

F200

9000

9000

9000

6950

7640

8190

4510

5370

5560

3090

3700

3760

2200

2380

2340

1620

1580

1580

1230

1090

1090

890

800

800

F100

1790

2070

2070

980

880

880

490

F150

4220

4420

4700

2430

2850

2900

1570

1660

1610

1070

930

930

650

590

590

F200

7820

7890

7950

4670

5130

5500

3030

3610

3730

2070

2490

2520

1480

1600

1570

1090

1060

1060

830

730

730

600

530

530

F100

2890

3380

3380

1560

1440

1440

F150

6760

7240

7500

3980

4580

4700

2510

2700

2600

1690

1520

1520

1030

960

960

720

600

600

F200

9000

9000

9000

7600

8330

8930

4920

5890

6080

3380

4100

4100

2410

2620

2550

1750

1750

1690

1340

1230

1180

960

860

860

F100

1850

2160

2160

1000

920

920

F150

4320

4630

4940

2540

2930

3010

1600

1730

1660

1080

970

970

660

610

610

F200

8130

8130

8340

4860

5330

5710

3150

3770

3890

2160

2620

2620

1540

1670

1630

1120

1120

1080

850

780

750

610

550

550

F100

1240

1450

1450

670

620

620

F150

2900

3110

3320

1710

1970

2020

1070

1160

1120

720

650

650

F200

5460

5460

5600

3270

3580

3840

2110

2530

2610

1450

1760

1760

1030

1120

1090

750

750

720

570

530

500

F100

2410

2730

2890

1320

1200

1200

F150

5630

5950

6430

3250

3860

3860

2120

2220

2220

1440

1280

1280

890

750

750

600

F200

9000

9000

9000

6270

7000

7480

4050

4820

5020

2810

3380

3380

2000

2130

2130

1440

1440

1440

1120

1010

1010

820

720

720

F100

1540

1750

1850

840

770

770

F150

3600

3810

4120

2080

2470

2470

1350

1420

1420

920

820

820

570

F200

6790

6790

6900

4010

4480

4790

2590

3090

3210

1800

2160

2160

1280

1360

1360

920

920

920

720

650

650

520

F100

1030

1170

1240

570

510

510

F150

2420

2560

2760

1400

1660

1660

910

950

950

620

550

550

F200

4560

4560

4630

2690

3010

3210

1740

2070

2150

1210

1450

1450

860

910

910

620

620

620

No

te:

1. F

or

inte

rmedia

te s

pan, use inte

rpola

tion b

etw

een the v

alu

es o

f th

e s

am

e c

ate

gory

.

2. T

he v

alu

es in the table

are

the m

axim

um

desig

n load w

idth

in m

m.

3. D

o n

ot use these table

s for

the d

esig

n o

f tr

uss/r

after

in r

oof pitch o

ther

than 2

2.5

degre

es.

4. F

or

truss/r

after

with 2

or

more

row

s o

f in

tern

al pru

lins o

n e

ach s

ide o

f ridge, sele

ct lo

ad w

idth

in the "

2+

" colu

mns

3 s

ides

N1/N

2

N3

N4

7000

2 s

ides

N1/N

2

N3

N4

8000

9000

10000

No. of in

t. p

urlin

s

0/1

/4 s

ides

N1/N

2

N3

N4

WIN

D

BLO

CK

ING

WIN

D

CLA

SS

RA

FT

ER

SIZ

E

SP

AN

(m

m)

3000

4000

5000

6000

43FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

TAB

LE 8

A

Purli

n Sp

an a

nd R

eact

ion,

Roo

f Pitc

h: 15

°, S

pan

Type

: Sim

ply

Supp

orte

d, C

onne

ctio

n: B

rack

et

Win

d

Blo

ckin

gW

ind

C

lass

Purl

in

Size

Purl

in L

oad

Wid

th (m

m)

≤90

012

00

150

018

00

210

02

40

02

70

03

00

03

30

03

60

03

90

04

20

04

50

0

0/1

/4 s

ides

N1

/ N

2F1

0053

50, 1

.549

50, 1

.546

50, 2

.044

00, 2

.042

00, 2

.040

00, 2

.538

50, 2

.537

50, 2

.536

50, 3

.035

50, 3

.034

50, 3

.033

50, 3

.533

00, 3

.5

F150

7450

, 1.5

7050

, 2.0

6700

, 2.5

6450

, 3.0

6250

, 3.0

6050

, 3.5

5900

, 4.0

5700

, 4.0

5550

, 4.5

5400

, 4.5

5250

, 5.0

5150

, 5.0

5050

, 5.5

F200

9000

, 2.0

8750

, 2.5

8400

, 3.0

8100

, 3.5

7850

, 4.0

7650

, 4.0

7450

, 4.5

7300

, 5.0

7150

, 5.5

7000

, 6.0

6900

, 6.0

6750

, 6.5

6650

, 7.0

N3

F100

5350

, 2.0

4850

, 2.5

4500

, 2.5

4200

, 3.0

4000

, 3.5

3800

, 3.5

3650

, 4.0

3500

, 4.0

3350

, 4.5

3200

, 4.5

3050

, 4.5

2950

, 4.5

2850

, 5.0

F150

7450

, 2.5

7050

, 3.0

6700

, 4.0

6450

, 4.5

6150

, 5.0

5900

, 5.5

5650

, 5.5

5450

, 6.0

5250

, 6.5

5050

, 7.0

4850

, 7.0

4650

, 7.5

4500

, 7.5

F200

9000

, 3.0

8750

, 4.0

8400

, 4.5

8100

, 5.5

7850

, 6.0

7650

, 7.0

7450

, 7.5

7300

, 8.0

7150

, 8.5

7000

, 9.5

6900

, 10.

066

50, 1

0.5

6400

, 10.

5

N4

F100

4550

, 2.5

4150

, 3.0

3850

, 3.5

3600

, 4.0

3400

, 4.0

3200

, 4.5

3000

, 4.5

2850

, 5.0

2700

, 5.0

2600

, 5.5

2400

, 5.5

2200

, 5.5

2050

, 5.5

F150

7100

, 3.5

6400

, 4.5

5900

, 5.0

5550

, 5.5

5250

, 6.5

5000

, 7.0

4750

, 7.5

4500

, 7.5

4250

, 8.0

4100

, 8.5

3900

, 8.5

3800

, 9.0

3650

, 9.5

F200

9000

, 4.5

8750

, 6.0

8300

, 7.0

7800

, 8.0

7400

, 8.5

7050

, 9.5

6750

, 10.

063

50, 1

0.5

6050

, 11.

058

00, 1

1.5

5600

, 12.

053

50, 1

2.5

5200

, 13.

0

2 s

ides

N1

/ N

2F1

0048

00, 1

.543

50, 2

.040

00, 2

.037

50, 2

.535

50, 2

.534

00, 3

.032

50, 3

.031

50, 3

.030

50, 3

.529

50, 3

.529

00, 4

.028

00, 4

.027

50, 4

.0

F150

7450

, 2.5

6700

, 2.5

6200

, 3.0

5800

, 3.5

5500

, 4.0

5250

, 4.0

5050

, 4.5

4900

, 5.0

4700

, 5.0

4600

, 5.5

4450

, 5.5

4350

, 6.0

4250

, 6.0

F200

9000

, 2.5

8750

, 3.5

8400

, 4.0

8100

, 4.5

7750

, 5.0

7400

, 5.5

7100

, 6.0

6800

, 6.5

6600

, 7.0

6400

, 7.5

6250

, 8.0

6050

, 8.0

5950

, 8.5

N3

F100

4100

, 2.0

3700

, 2.5

3400

, 3.0

3200

, 3.0

3050

, 3.5

2900

, 3.5

2800

, 4.0

2700

, 4.5

2600

, 4.5

2550

, 5.0

2450

, 5.0

2400

, 5.5

2250

, 5.5

F150

6300

, 3.0

5700

, 3.5

5300

, 4.0

4950

, 4.5

4700

, 5.0

4500

, 5.5

4300

, 6.0

4150

, 6.5

4050

, 7.0

3900

, 7.5

3800

, 7.5

3700

, 8.0

3650

, 8.5

F200

8900

, 4.0

8000

, 5.0

7400

, 5.5

6950

, 6.5

6600

, 7.0

6300

, 7.5

6050

, 8.5

5850

, 9.0

5650

, 9.5

5450

, 10.

053

50, 1

0.5

5200

, 11.

050

50, 1

1.5

N4

F100

3550

, 2.5

3200

, 3.0

2950

, 3.5

2800

, 4.0

2650

, 4.5

2550

, 5.0

2450

, 5.5

2250

, 5.5

2050

, 5.5

1850

, 5.5

1700

, 5.5

1600

, 5.5

1500

, 5.5

F150

5450

, 4.0

4950

, 4.5

4600

, 5.5

4300

, 6.0

4100

, 7.0

3900

, 7.5

3750

, 8.0

3600

, 8.5

3500

, 9.0

3400

, 9.5

3300

, 10.

031

50, 1

0.5

2950

, 10.

5

F200

7650

, 5.5

6900

, 6.5

6400

, 7.5

6000

, 8.5

5700

, 9.0

5450

, 10.

052

50, 1

1.0

5050

, 11.

549

00, 1

2.5

4750

, 13.

046

00, 1

4.0

4250

, 14.

039

50, 1

3.5

3 s

ides

N1

/ N

2F1

0044

50, 1

.540

50, 2

.037

50, 2

.535

00, 2

.533

50, 3

.032

00, 3

.030

50, 3

.529

50, 3

.528

50, 3

.527

50, 4

.027

00, 4

.026

50, 4

.525

50, 4

.5

F150

6900

, 2.5

6250

, 3.0

5800

, 3.5

5400

, 4.0

5150

, 4.0

4900

, 4.5

4700

, 5.0

4550

, 5.5

4400

, 5.5

4250

, 6.0

4150

, 6.0

4050

, 6.5

3950

, 7.0

F200

9000

, 3.0

8750

, 4.0

8100

, 4.5

7600

, 5.0

7200

, 5.5

6850

, 6.0

6600

, 7.0

6350

, 7.0

6150

, 7.5

5950

, 8.0

5800

, 8.5

5650

, 9.0

5550

, 9.5

N3

F100

3800

, 2.5

3450

, 2.5

3200

, 3.0

3000

, 3.5

2850

, 4.0

2750

, 4.0

2600

, 4.5

2550

, 5.0

2450

, 5.0

2400

, 5.5

2200

, 5.5

2050

, 5.5

1900

, 5.5

F150

5900

, 3.5

5350

, 4.0

4950

, 4.5

4650

, 5.0

4400

, 5.5

4200

, 6.0

4050

, 6.5

3900

, 7.0

3800

, 7.5

3650

, 8.0

3550

, 8.5

3500

, 9.0

3400

, 9.5

F200

8300

, 4.5

7500

, 5.5

6900

, 6.5

6500

, 7.0

6150

, 8.0

5900

, 8.5

5650

, 9.0

5450

, 10.

053

00, 1

0.5

5100

, 11.

050

00, 1

2.0

4850

, 12.

547

50, 1

3.0

N4

F100

3300

, 3.0

3000

, 3.5

2800

, 4.0

2600

, 4.5

2500

, 5.0

2350

, 5.5

2100

, 5.5

1900

, 5.5

1700

, 5.5

1550

, 5.5

1450

, 5.5

1350

, 5.5

1250

, 5.5

F150

5100

, 4.5

4650

, 5.0

4300

, 6.0

4050

, 7.0

3800

, 7.5

3650

, 8.0

3500

, 8.5

3400

, 9.5

3300

, 10.

031

00, 1

0.5

2850

, 10.

026

50, 1

0.0

2500

, 10.

5

F200

7150

, 6.0

6450

, 7.0

6000

, 8.0

5650

, 9.5

5350

, 10.

551

00, 1

1.0

4900

, 12.

047

50, 1

3.0

4600

, 14.

042

00, 1

4.0

3900

, 14.

036

00, 1

4.0

3350

, 14.

0

Not

es:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

purli

n sp

an in

mm

, the

2nd

val

ue in

the

tabl

e is

the

reac

tion

(kN

) on

the

supp

ortin

g ra

fter.

3. T

he re

actio

n is

base

d on

1 p

urlin

span

and

2 ra

fter s

uppo

rts. F

or 2

or m

ore

simpl

y sp

an p

urlin

s, d

oubl

e (2

x) th

e re

actio

n fo

r int

erna

l raf

ters

.4.

Pur

lin sp

an =

spac

ing

of ra

fters

.5.

Do

not u

se th

ese

tabl

es fo

r the

des

ign

of p

urlin

in ro

of p

itch

othe

r tha

n 15

deg

rees

.

TA

BL

E 8

A

PU

RL

IN S

PA

N A

ND

RE

AC

TIO

NS

PA

N T

YP

E:

SIM

PL

Y S

UP

PO

RT

ED

CO

NN

EC

TIO

N:

BR

AC

KE

TR

OO

F P

ITC

H:

15

o

900

1200

1500

1800

2100

2400

2700

3000

3300

3600

3900

4200

4500

F100

5350, 1.5

4950, 1.5

4650, 2.0

4400, 2.0

4200, 2.0

4000, 2.5

3850, 2.5

3750, 2.5

3650, 3.0

3550, 3.0

3450, 3.0

3350, 3.5

3300, 3.5

F150

7450, 1.5

7050, 2.0

6700, 2.5

6450, 3.0

6250, 3.0

6050, 3.5

5900, 4.0

5700, 4.0

5550, 4.5

5400, 4.5

5250, 5.0

5150, 5.0

5050, 5.5

F200

9000, 2.0

8750, 2.5

8400, 3.0

8100, 3.5

7850, 4.0

7650, 4.0

7450, 4.5

7300, 5.0

7150, 5.5

7000, 6.0

6900, 6.0

6750, 6.5

6650, 7.0

F100

5350, 2.0

4850, 2.5

4500, 2.5

4200, 3.0

4000, 3.5

3800, 3.5

3650, 4.0

3500, 4.0

3350, 4.5

3200, 4.5

3050, 4.5

2950, 4.5

2850, 5.0

F150

7450, 2.5

7050, 3.0

6700, 4.0

6450, 4.5

6150, 5.0

5900, 5.5

5650, 5.5

5450, 6.0

5250, 6.5

5050, 7.0

4850, 7.0

4650, 7.5

4500, 7.5

F200

9000, 3.0

8750, 4.0

8400, 4.5

8100, 5.5

7850, 6.0

7650, 7.0

7450, 7.5

7300, 8.0

7150, 8.5

7000, 9.5

6900, 10.0

6650, 10.5

6400, 10.5

F100

4550, 2.5

4150, 3.0

3850, 3.5

3600, 4.0

3400, 4.0

3200, 4.5

3000, 4.5

2850, 5.0

2700, 5.0

2600, 5.5

2400, 5.5

2200, 5.5

2050, 5.5

F150

7100, 3.5

6400, 4.5

5900, 5.0

5550, 5.5

5250, 6.5

5000, 7.0

4750, 7.5

4500, 7.5

4250, 8.0

4100, 8.5

3900, 8.5

3800, 9.0

3650, 9.5

F200

9000, 4.5

8750, 6.0

8300, 7.0

7800, 8.0

7400, 8.5

7050, 9.5

6750, 10.0

6350, 10.5

6050, 11.0

5800, 11.5

5600, 12.0

5350, 12.5

5200, 13.0

F100

4800, 1.5

4350, 2.0

4000, 2.0

3750, 2.5

3550, 2.5

3400, 3.0

3250, 3.0

3150, 3.0

3050, 3.5

2950, 3.5

2900, 4.0

2800, 4.0

2750, 4.0

F150

7450, 2.5

6700, 2.5

6200, 3.0

5800, 3.5

5500, 4.0

5250, 4.0

5050, 4.5

4900, 5.0

4700, 5.0

4600, 5.5

4450, 5.5

4350, 6.0

4250, 6.0

F200

9000, 2.5

8750, 3.5

8400, 4.0

8100, 4.5

7750, 5.0

7400, 5.5

7100, 6.0

6800, 6.5

6600, 7.0

6400, 7.5

6250, 8.0

6050, 8.0

5950, 8.5

F100

4100, 2.0

3700, 2.5

3400, 3.0

3200, 3.0

3050, 3.5

2900, 3.5

2800, 4.0

2700, 4.5

2600, 4.5

2550, 5.0

2450, 5.0

2400, 5.5

2250, 5.5

F150

6300, 3.0

5700, 3.5

5300, 4.0

4950, 4.5

4700, 5.0

4500, 5.5

4300, 6.0

4150, 6.5

4050, 7.0

3900, 7.5

3800, 7.5

3700, 8.0

3650, 8.5

F200

8900, 4.0

8000, 5.0

7400, 5.5

6950, 6.5

6600, 7.0

6300, 7.5

6050, 8.5

5850, 9.0

5650, 9.5

5450, 10.0

5350, 10.5

5200, 11.0

5050, 11.5

F100

3550, 2.5

3200, 3.0

2950, 3.5

2800, 4.0

2650, 4.5

2550, 5.0

2450, 5.5

2250, 5.5

2050, 5.5

1850, 5.5

1700, 5.5

1600, 5.5

1500, 5.5

F150

5450, 4.0

4950, 4.5

4600, 5.5

4300, 6.0

4100, 7.0

3900, 7.5

3750, 8.0

3600, 8.5

3500, 9.0

3400, 9.5

3300, 10.0

3150, 10.5

2950, 10.5

F200

7650, 5.5

6900, 6.5

6400, 7.5

6000, 8.5

5700, 9.0

5450, 10.0

5250, 11.0

5050, 11.5

4900, 12.5

4750, 13.0

4600, 14.0

4250, 14.0

3950, 13.5

F100

4450, 1.5

4050, 2.0

3750, 2.5

3500, 2.5

3350, 3.0

3200, 3.0

3050, 3.5

2950, 3.5

2850, 3.5

2750, 4.0

2700, 4.0

2650, 4.5

2550, 4.5

F150

6900, 2.5

6250, 3.0

5800, 3.5

5400, 4.0

5150, 4.0

4900, 4.5

4700, 5.0

4550, 5.5

4400, 5.5

4250, 6.0

4150, 6.0

4050, 6.5

3950, 7.0

F200

9000, 3.0

8750, 4.0

8100, 4.5

7600, 5.0

7200, 5.5

6850, 6.0

6600, 7.0

6350, 7.0

6150, 7.5

5950, 8.0

5800, 8.5

5650, 9.0

5550, 9.5

F100

3800, 2.5

3450, 2.5

3200, 3.0

3000, 3.5

2850, 4.0

2750, 4.0

2600, 4.5

2550, 5.0

2450, 5.0

2400, 5.5

2200, 5.5

2050, 5.5

1900, 5.5

F150

5900, 3.5

5350, 4.0

4950, 4.5

4650, 5.0

4400, 5.5

4200, 6.0

4050, 6.5

3900, 7.0

3800, 7.5

3650, 8.0

3550, 8.5

3500, 9.0

3400, 9.5

F200

8300, 4.5

7500, 5.5

6900, 6.5

6500, 7.0

6150, 8.0

5900, 8.5

5650, 9.0

5450, 10.0

5300, 10.5

5100, 11.0

5000, 12.0

4850, 12.5

4750, 13.0

F100

3300, 3.0

3000, 3.5

2800, 4.0

2600, 4.5

2500, 5.0

2350, 5.5

2100, 5.5

1900, 5.5

1700, 5.5

1550, 5.5

1450, 5.5

1350, 5.5

1250, 5.5

F150

5100, 4.5

4650, 5.0

4300, 6.0

4050, 7.0

3800, 7.5

3650, 8.0

3500, 8.5

3400, 9.5

3300, 10.0

3100, 10.5

2850, 10.0

2650, 10.0

2500, 10.5

F200

7150, 6.0

6450, 7.0

6000, 8.0

5650, 9.5

5350, 10.5

5100, 11.0

4900, 12.0

4750, 13.0

4600, 14.0

4200, 14.0

3900, 14.0

3600, 14.0

3350, 14.0

No

te:

1. F

or

inte

rmedia

te load w

idth

, use inte

rpola

tion b

etw

een the v

alu

es o

f th

e s

am

e c

ate

gory

.

2. T

he 1

st valu

e in the table

is the p

urlin

span in m

m, th

e 2

nd v

alu

e in the table

is the r

eaction (

kN

) on the s

upport

ing r

after.

3. T

he r

eaction is b

ased o

n 1

purlin

span a

nd 2

rafter

support

s. F

or

2 o

r m

ore

sim

ply

span p

urlin

s, double

(2x)

the r

eaction for

inte

rnal ra

fters

.

4. P

urlin

span =

spacin

g o

f ra

fters

.

5. D

o n

ot use these table

s for

the d

esig

n o

f purlin

in r

oof pitch o

ther

than 1

5 d

egre

es.

2 s

ides

N1/N

2

N3

N4

3 s

ides

N1/N

2

N3

N4

WIN

D

BLO

CK

IN

WIN

D

CLA

SS

PU

RLIN

SIZ

E

PU

RLIN

LO

AD

WID

TH

(m

m)

0/1

/4 s

ides

N1/N

2

N3

N4

4 T

able

6A

~ 8

B.x

lsx

18/0

5/2

016

44FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

TAB

LE 8

B

Purli

n Sp

an a

nd R

eact

ion,

Roo

f Pitc

h: 2

2.5°

, Spa

n Ty

pe: S

impl

y Su

ppor

ted,

Con

nect

ion:

Bra

cket

Win

d

Blo

ckin

gW

ind

C

lass

Purl

in

Size

Purl

in L

oad

Wid

th (m

m)

≤90

012

00

150

018

00

210

02

40

02

70

03

00

03

30

03

60

03

90

04

20

04

50

0

0/1

/4 s

ides

N1

/ N

2F1

0053

00, 2

.049

00, 2

.046

00, 2

.543

50, 3

.041

50, 3

.039

50, 3

.538

00, 3

.536

50, 4

.034

50, 4

.033

00, 4

.532

00, 4

.530

50, 4

.529

50, 4

.5

F150

7400

, 2.5

6950

, 3.0

6650

, 3.5

6400

, 4.0

6200

, 4.5

6000

, 5.0

5800

, 5.5

5650

, 6.0

5450

, 6.5

5250

, 6.5

5050

, 7.0

4850

, 7.0

4700

, 7.5

F200

9000

, 3.0

8700

, 3.5

8350

, 4.5

8050

, 5.0

7800

, 5.5

7600

, 6.5

7400

, 7.0

7250

, 7.5

7100

, 8.0

6950

, 8.5

6800

, 9.0

6700

, 9.5

6600

, 10.

0

N3

F100

5300

, 3.0

4550

, 3.0

4050

, 3.5

3700

, 4.0

3450

, 4.0

3200

, 4.5

3000

, 4.5

2850

, 5.0

2750

, 5.0

2600

, 5.5

2400

, 5.5

2250

, 5.5

2100

, 5.5

F150

7400

, 4.0

6950

, 4.5

6450

, 5.5

5850

, 6.0

5400

, 6.5

5050

, 7.0

4750

, 7.0

4500

, 7.5

4300

, 8.0

4100

, 8.0

3950

, 8.5

3800

, 9.0

3700

, 9.5

F200

9000

, 4.5

8700

, 5.5

8350

, 7.0

8050

, 8.0

7700

, 9.0

7200

, 9.5

6800

, 10.

064

50, 1

0.5

6150

, 11.

058

50, 1

1.5

5650

, 12.

054

50, 1

2.5

5250

, 13.

0

N4

F100

4300

, 3.5

3700

, 4.0

3300

, 4.5

3000

, 4.5

2800

, 5.0

2600

, 5.5

2300

, 5.5

2100

, 5.5

1900

, 5.5

1750

, 5.5

1600

, 5.5

1500

, 5.5

1400

, 5.5

F150

6750

, 5.0

5850

, 6.0

5200

, 6.5

4750

, 7.0

4400

, 8.0

4100

, 8.5

3850

, 8.5

3650

, 9.0

3500

, 9.5

3350

, 10.

031

50, 1

0.5

2900

, 10.

027

00, 1

0.0

F200

9000

, 6.5

8350

, 8.5

7450

, 9.5

6750

, 10.

062

50, 1

1.0

5850

, 11.

555

00, 1

2.5

5200

, 13.

049

50, 1

3.5

4600

, 13.

542

50, 1

4.0

3950

, 14.

037

00, 1

4.0

2 s

ides

N1

/ N

2F1

0047

00, 2

.542

50, 2

.539

50, 3

.037

00, 3

.535

00, 4

.033

50, 4

.031

50, 4

.530

00, 4

.528

50, 5

.027

50, 5

.026

50, 5

.524

50, 5

.523

00, 5

.5

F150

7350

, 3.5

6600

, 4.0

6100

, 4.5

5750

, 5.5

5450

, 6.0

5200

, 6.5

5000

, 7.0

4750

, 7.0

4500

, 7.5

4350

, 8.0

4150

, 8.0

4000

, 8.5

3850

, 9.0

F200

9000

, 4.0

8700

, 5.0

8350

, 6.5

8050

, 7.0

7600

, 8.0

7250

, 8.5

6950

, 9.5

6700

, 10.

064

50, 1

0.5

6150

, 11.

059

00, 1

1.5

5700

, 12.

055

00, 1

2.5

N3

F100

4000

, 3.0

3650

, 3.5

3350

, 4.0

3100

, 4.5

2850

, 5.0

2650

, 5.0

2400

, 5.5

2150

, 5.5

1950

, 5.5

1800

, 5.5

1650

, 5.5

1550

, 5.5

1450

, 5.5

F150

6250

, 4.5

5650

, 5.5

5200

, 6.5

4850

, 7.0

4500

, 7.5

4200

, 8.0

3950

, 8.5

3750

, 9.0

3550

, 9.5

3400

, 10.

033

00, 1

0.5

3050

, 10.

528

50, 1

0.5

F200

8750

, 6.5

7900

, 7.5

7300

, 8.5

6850

, 10.

064

00, 1

0.5

5950

, 11.

556

50, 1

2.0

5350

, 13.

051

00, 1

3.5

4800

, 13.

544

50, 1

4.0

4100

, 13.

538

50, 1

4.0

N4

F100

3500

, 4.0

3050

, 4.5

2750

, 5.0

2400

, 5.5

2050

, 5.5

1800

, 5.5

1600

, 5.5

1450

, 5.5

1300

, 5.5

1200

, 5.5

1100

, 5.5

1000

, 5.0

950,

5.5

F150

5350

, 6.0

4850

, 7.0

4350

, 8.0

3950

, 8.5

3650

, 9.5

3400

, 10.

031

50, 1

0.5

2850

, 10.

525

50, 1

0.0

2350

, 10.

021

50, 1

0.0

2000

, 10.

019

00, 1

0.5

F200

7550

, 8.0

6800

, 10.

061

50, 1

1.0

5600

, 12.

052

00, 1

3.0

4800

, 14.

042

50, 1

3.5

3850

, 14.

035

00, 1

4.0

3200

, 14.

029

50, 1

4.0

2750

, 14.

025

50, 1

4.0

3 s

ides

N1

/ N

2F1

0044

00, 2

.539

50, 3

.037

00, 3

.534

50, 4

.032

50, 4

.530

50, 4

.529

00, 5

.027

50, 5

.026

00, 5

.524

00, 5

.522

00, 5

.520

50, 5

.519

00, 5

.5

F150

6800

, 4.0

6150

, 4.5

5700

, 5.5

5350

, 6.0

5050

, 6.5

4800

, 7.0

4550

, 7.5

4300

, 8.0

4100

, 8.5

3950

, 8.5

3750

, 9.0

3650

, 9.5

3500

, 9.5

F200

9000

, 5.0

8650

, 6.5

8000

, 7.5

7500

, 8.0

7100

, 9.0

6750

, 10.

064

50, 1

0.5

6150

, 11.

058

50, 1

1.5

5600

, 12.

053

50, 1

2.5

5150

, 13.

050

00, 1

3.5

N3

F100

3750

, 3.5

3400

, 4.0

3050

, 4.5

2800

, 5.0

2600

, 5.5

2250

, 5.5

2000

, 5.5

1800

, 5.5

1650

, 5.5

1500

, 5.5

1350

, 5.0

1250

, 5.0

1200

, 5.5

F150

5800

, 5.0

5250

, 6.0

4850

, 7.0

4400

, 7.5

4100

, 8.5

3800

, 9.0

3600

, 9.5

3400

, 10.

032

00, 1

0.0

2950

, 10.

527

00, 1

0.0

2500

, 10.

023

50, 1

0.5

F200

8150

, 7.0

7350

, 8.5

6800

, 10.

063

00, 1

1.0

5800

, 11.

554

50, 1

2.5

5100

, 13.

048

00, 1

4.0

4350

, 14.

040

00, 1

4.0

3700

, 14.

034

00, 1

3.5

3200

, 14.

0

N4

F100

3250

, 4.5

2800

, 5.0

2400

, 5.5

2000

, 5.5

1700

, 5.5

1500

, 5.5

1300

, 5.0

1200

, 5.5

1100

, 5.5

1000

, 5.5

900,

5.0

850,

5.5

800,

5.5

F150

5050

, 6.5

4400

, 7.5

3950

, 8.5

3600

, 9.5

3350

, 10.

029

50, 1

0.5

2600

, 10.

023

50, 1

0.5

2150

, 10.

519

50, 1

0.0

1800

, 10.

016

50, 1

0.0

1550

, 10.

0

F200

7050

, 9.0

6300

, 11.

056

00, 1

2.0

5100

, 13.

045

50, 1

4.0

4000

, 14.

035

50, 1

4.0

3200

, 14.

029

00, 1

4.0

2650

, 14.

024

50, 1

4.0

2250

, 13.

521

00, 1

3.5

Not

es:

1. F

or in

term

edia

te lo

ad w

idth

, use

inte

rpol

atio

n be

twee

n th

e va

lues

of t

he sa

me

cate

gory

.2.

The

1st

val

ue in

the

tabl

e is

the

purli

n sp

an in

mm

, the

2nd

val

ue in

the

tabl

e is

the

reac

tion

(kN

) on

the

supp

ortin

g ra

fter.

3. T

he re

actio

n is

base

d on

1 p

urlin

span

and

2 ra

fter s

uppo

rts. F

or 2

or m

ore

simpl

y sp

an p

urlin

s,

doub

le (2

x) th

e re

actio

n fo

r int

erna

l raf

ters

.4.

Pur

lin sp

an =

spac

ing

of ra

fters

.5.

Do

not u

se th

ese

tabl

es fo

r the

des

ign

of p

urlin

in ro

of p

itch

othe

r tha

n 22

.5 d

egre

es.

TA

BL

E 8

B

PU

RL

IN S

PA

N A

ND

RE

AC

TIO

NS

PA

N T

YP

E:

SIM

PL

Y S

UP

PO

RT

ED

CO

NN

EC

TIO

N:

BR

AC

KE

TR

OO

F P

ITC

H:

22.5

o

900

1200

1500

1800

2100

2400

2700

3000

3300

3600

3900

4200

4500

F100

5300, 2.0

4900, 2.0

4600, 2.5

4350, 3.0

4150, 3.0

3950, 3.5

3800, 3.5

3650, 4.0

3450, 4.0

3300, 4.5

3200, 4.5

3050, 4.5

2950, 4.5

F150

7400, 2.5

6950, 3.0

6650, 3.5

6400, 4.0

6200, 4.5

6000, 5.0

5800, 5.5

5650, 6.0

5450, 6.5

5250, 6.5

5050, 7.0

4850, 7.0

4700, 7.5

F200

9000, 3.0

8700, 3.5

8350, 4.5

8050, 5.0

7800, 5.5

7600, 6.5

7400, 7.0

7250, 7.5

7100, 8.0

6950, 8.5

6800, 9.0

6700, 9.5

6600, 10.0

F100

5300, 3.0

4550, 3.0

4050, 3.5

3700, 4.0

3450, 4.0

3200, 4.5

3000, 4.5

2850, 5.0

2750, 5.0

2600, 5.5

2400, 5.5

2250, 5.5

2100, 5.5

F150

7400, 4.0

6950, 4.5

6450, 5.5

5850, 6.0

5400, 6.5

5050, 7.0

4750, 7.0

4500, 7.5

4300, 8.0

4100, 8.0

3950, 8.5

3800, 9.0

3700, 9.5

F200

9000, 4.5

8700, 5.5

8350, 7.0

8050, 8.0

7700, 9.0

7200, 9.5

6800, 10.0

6450, 10.5

6150, 11.0

5850, 11.5

5650, 12.0

5450, 12.5

5250, 13.0

F100

4300, 3.5

3700, 4.0

3300, 4.5

3000, 4.5

2800, 5.0

2600, 5.5

2300, 5.5

2100, 5.5

1900, 5.5

1750, 5.5

1600, 5.5

1500, 5.5

1400, 5.5

F150

6750, 5.0

5850, 6.0

5200, 6.5

4750, 7.0

4400, 8.0

4100, 8.5

3850, 8.5

3650, 9.0

3500, 9.5

3350, 10.0

3150, 10.5

2900, 10.0

2700, 10.0

F200

9000, 6.5

8350, 8.5

7450, 9.5

6750, 10.0

6250, 11.0

5850, 11.5

5500, 12.5

5200, 13.0

4950, 13.5

4600, 13.5

4250, 14.0

3950, 14.0

3700, 14.0

F100

4700, 2.5

4250, 2.5

3950, 3.0

3700, 3.5

3500, 4.0

3350, 4.0

3150, 4.5

3000, 4.5

2850, 5.0

2750, 5.0

2650, 5.5

2450, 5.5

2300, 5.5

F150

7350, 3.5

6600, 4.0

6100, 4.5

5750, 5.5

5450, 6.0

5200, 6.5

5000, 7.0

4750, 7.0

4500, 7.5

4350, 8.0

4150, 8.0

4000, 8.5

3850, 9.0

F200

9000, 4.0

8700, 5.0

8350, 6.5

8050, 7.0

7600, 8.0

7250, 8.5

6950, 9.5

6700, 10.0

6450, 10.5

6150, 11.0

5900, 11.5

5700, 12.0

5500, 12.5

F100

4000, 3.0

3650, 3.5

3350, 4.0

3100, 4.5

2850, 5.0

2650, 5.0

2400, 5.5

2150, 5.5

1950, 5.5

1800, 5.5

1650, 5.5

1550, 5.5

1450, 5.5

F150

6250, 4.5

5650, 5.5

5200, 6.5

4850, 7.0

4500, 7.5

4200, 8.0

3950, 8.5

3750, 9.0

3550, 9.5

3400, 10.0

3300, 10.5

3050, 10.5

2850, 10.5

F200

8750, 6.5

7900, 7.5

7300, 8.5

6850, 10.0

6400, 10.5

5950, 11.5

5650, 12.0

5350, 13.0

5100, 13.5

4800, 13.5

4450, 14.0

4100, 13.5

3850, 14.0

F100

3500, 4.0

3050, 4.5

2750, 5.0

2400, 5.5

2050, 5.5

1800, 5.5

1600, 5.5

1450, 5.5

1300, 5.5

1200, 5.5

1100, 5.5

1000, 5.0

950, 5.5

F150

5350, 6.0

4850, 7.0

4350, 8.0

3950, 8.5

3650, 9.5

3400, 10.0

3150, 10.5

2850, 10.5

2550, 10.0

2350, 10.0

2150, 10.0

2000, 10.0

1900, 10.5

F200

7550, 8.0

6800, 10.0

6150, 11.0

5600, 12.0

5200, 13.0

4800, 14.0

4250, 13.5

3850, 14.0

3500, 14.0

3200, 14.0

2950, 14.0

2750, 14.0

2550, 14.0

F100

4400, 2.5

3950, 3.0

3700, 3.5

3450, 4.0

3250, 4.5

3050, 4.5

2900, 5.0

2750, 5.0

2600, 5.5

2400, 5.5

2200, 5.5

2050, 5.5

1900, 5.5

F150

6800, 4.0

6150, 4.5

5700, 5.5

5350, 6.0

5050, 6.5

4800, 7.0

4550, 7.5

4300, 8.0

4100, 8.5

3950, 8.5

3750, 9.0

3650, 9.5

3500, 9.5

F200

9000, 5.0

8650, 6.5

8000, 7.5

7500, 8.0

7100, 9.0

6750, 10.0

6450, 10.5

6150, 11.0

5850, 11.5

5600, 12.0

5350, 12.5

5150, 13.0

5000, 13.5

F100

3750, 3.5

3400, 4.0

3050, 4.5

2800, 5.0

2600, 5.5

2250, 5.5

2000, 5.5

1800, 5.5

1650, 5.5

1500, 5.5

1350, 5.0

1250, 5.0

1200, 5.5

F150

5800, 5.0

5250, 6.0

4850, 7.0

4400, 7.5

4100, 8.5

3800, 9.0

3600, 9.5

3400, 10.0

3200, 10.0

2950, 10.5

2700, 10.0

2500, 10.0

2350, 10.5

F200

8150, 7.0

7350, 8.5

6800, 10.0

6300, 11.0

5800, 11.5

5450, 12.5

5100, 13.0

4800, 14.0

4350, 14.0

4000, 14.0

3700, 14.0

3400, 13.5

3200, 14.0

F100

3250, 4.5

2800, 5.0

2400, 5.5

2000, 5.5

1700, 5.5

1500, 5.5

1300, 5.0

1200, 5.5

1100, 5.5

1000, 5.5

900, 5.0

850, 5.5

800, 5.5

F150

5050, 6.5

4400, 7.5

3950, 8.5

3600, 9.5

3350, 10.0

2950, 10.5

2600, 10.0

2350, 10.5

2150, 10.5

1950, 10.0

1800, 10.0

1650, 10.0

1550, 10.0

F200

7050, 9.0

6300, 11.0

5600, 12.0

5100, 13.0

4550, 14.0

4000, 14.0

3550, 14.0

3200, 14.0

2900, 14.0

2650, 14.0

2450, 14.0

2250, 13.5

2100, 13.5

No

te:

1. F

or

inte

rmedia

te load w

idth

, use inte

rpola

tion b

etw

een the v

alu

es o

f th

e s

am

e c

ate

gory

.

2. T

he 1

st valu

e in the table

is the p

urlin

span in m

m, th

e 2

nd v

alu

e in the table

is the r

eaction (

kN

) on the s

upport

ing r

after.

3. T

he r

eaction is b

ased o

n 1

purlin

span a

nd 2

rafter

support

s. F

or

2 o

r m

ore

sim

ply

span p

urlin

s, double

(2x)

the r

eaction for

inte

rnal ra

fters

.

4. P

urlin

span =

spacin

g o

f ra

fters

.

5. D

o n

ot use these table

s for

the d

esig

n o

f purlin

in r

oof pitch o

ther

than 2

2.5

degre

es.

2 s

ides

N1/N

2

N3

N4

3 s

ides

N1/N

2

N3

N4

WIN

D

BLO

CK

IN

WIN

D

CLA

SS

PU

RLIN

SIZ

E

PU

RLIN

LO

AD

WID

TH

(m

m)

0/1

/4 s

ides

N1/N

2

N3

N4

4 T

able

6A

~ 8

B.x

lsx

18/0

5/2

016

45FI

RM

LOK

®

STR

UC

TUR

AL

BE

AM

S

4.5 DESIGN EXAMPLES: PITCHED STRUCTURESEXAMPLE 3:

A SIMPLE PITCHED ROOF FREESTANDING AWNING WITH 2 COLLAR-TIE FRAMES.

Design Parameters:



• Building Projection (Rafter Span): 4800mm

• Building Width (Frame Spacing/Purlin Span): 4600mm

• Roof Pitch: 15°

• Cladding: FLATDEK® II, No foot traffic

• Connection: Rail behind post


Cladding span = 0.52x rafter span = 0.52x 4800mm = 2490mm. From roof sheeting span table for wind class N4, 3 side blocked, pitched roof and no foot traffic condition, FLATDEK® II 0.42mm can span up to 3000mm without intermediate support, which is suitable for this example.


For collar-tie truss with 15° roof pitch, use Table 6A to select rafter size and frame spacing. From step 1, we know FLATDEK® II 0.42mm can span between the eave and apex without intermediate support. So for wind class N4, 3 sides blocked, 4800mm rafter span (use 5000mm) and 0 row of intermediate purlin, the following collar tie truss load width are available:

Rafter Truss load width (mm)

F10011 1080 < 4600/2 Not OK

F15015 2200 < 4600/2 Not OK

F20020 2760 > 4600/2 OK

For an overall structure width of 4600mm, the load width of each end rafter frame is 4600/2 = 2300mm. therefore F20020 with load width of 2760mm is suitable for this case. The collar-tie strut size is F15015 for 150 or 200 rafters.


For 15° roof pitch, use Table 8A to select purlin size. With no intermediate purlin, the apex/rail purlin load width is 4800/4 = 1200mm, the following purlin spans are available.

Purlin Purlin span (mm)

F10011 3000 < 4600 Not OK

F15015 4650 > 4600 OK

F20020 6450 > 4600 OK

Since the collar-tie rafter size is F20020, therefore F15015 and F20020 are both suitable for apex purlins. The rail size should be F20020 as detailed on page 34.

STEP 4: CONNECTION DETAILS

For Apex connection refer to Connection detail P2. For Collar tie to rafter connection refer to detail P10. For rafter to post connection refer to detail P7. For Rail behind Post Connection refer to detail P6.

DESIGN OUTCOME

46FIR

MLO

K®

STRU

CTU

RA

L BE

AM

S

EXAMPLE 4:

A SIMPLE PITCHED ROOF FREESTANDING AWNING WITH 3 PORTAL FRAME RAFTERS.

Design Parameters:



• Building Projection (Rafter Span): 4000mm

• Building Width: 10000mm

• Roof Pitch: 15°

• Cladding: CUSTOM ORB®, No foot traffic

• Connection: Rail to side of post


Cladding span = 0.52x rafter span = 0.52x 4000mm = 2080mm. From roof sheeting span table for wind class N3, 1 side blocked, pitched roof and no foot traffic condition, CUSTOM ORB® 0.42mm can span up to 1800mm < 2080mm, therefore provide 1 row of internal purlin between rail and apex, now the cladding span is 2080 / 2 = 1040mm < 1800mm, ok.


For portal frame rafter with 15° roof pitch, use Table 7A to select rafter size and frame spacing. It is unlikely that 2 frames will be able to support a building width of 10m. Therefore start design selection assuming 3 frames are required. Therefore the internal frame load width is 10,000mm / 2 = 5000mm and the end frame load width is 5000 / 2 = 2500mm. From step 1, we know CUSTOM ORB® 0.42mm requires 1 row of internal purlins. So for wind class N3, 1 sides blocked, 4000mm rafter span and 1 row of internal purlin, the following rafter load width are available:

Rafter Truss load width (mm)

F10011: 1850 < 5000, Not Ok

F15015: 5630 > 5000, Ok

F20020: 9000 > 5000, Ok

Therefore F15015 rafter is suitable for both end and internal frames. Collar-tie member is not required for portal frame rafter.


For 15° roof pitch, use Table 8A to select purlin size. With 1 intermediate purlin as determined from Step 1, the purlin load width is 1040mm (use 1200mm) and the purlin span is 5000mm, the following purlin spans are available.

Purlin Purlin span (mm)

F10011: 4850 < 5000, Not Ok

F15015: 7050 > 5000, Ok

F20020: 8750 > 5000, Ok

Therefore F15015 and F20020 are both suitable. The rail size should be F20020 as detailed on page 34.

STEP 4: CONNECTION DETAILS

For apex connection refer to connection detail P2. For rafter to post and post to rail connections refer to detail P5. For purlin connection refer to detail P3.

DESIGN OUTCOME

WWW.LYSAGHT.COM

Technical enquiries: [email protected] or call 1800 641 417

LYSAGHT®, FIRMLOK®, COLORBOND®, ZINCALUME® and ® product names are registered trademarks of BlueScope Steel Limited, ABN 16 000 011 058. Tek® is a registered trademark of ITW Buildex Pty Ltd. The LYSAGHT® range of products is exclusively made by or for BlueScope Steel Limited trading as Lysaght.

PRODUCT DESCRIPTIONS

• All descriptions, specifications, illustrations, drawings, data, dimensions and weights contained in this catalogue, all technical literature and websites containing information from Lysaght are approximations only. They are intended by Lysaght to be a general description for information and identification purposes and do not create a sale by description. Lysaght reserves the right at any time to: (a) supply Goods with such minor modifications from its drawings and specifications as it sees fit; and (b) alter specifications shown in its promotional literature to reflect changes made after the date of such publication.

DISCLAIMER, WARRANTIES AND LIMITATION OF LIABILITY

• This publication is intended to be an aid for all trades and professionals involved with specifying and installing Lysaght products and not to be a substitute for professional judgement.

• Terms and conditions of sale available at local Lysaght sales offices.

• Except to the extent to which liability may not lawfully be excluded or limited, BlueScope Steel Limited will not be under or incur any liability to you for any direct or indirect loss or damage (including, without limitation, consequential loss or damage such as loss of profit or anticipated profit, loss of use, damage to goodwill and loss due to delay) however caused (including, without limitation, breach of contract, negligence and/or breach of statute), which you may suffer or incur in connection with this publication.

© Copyright BlueScope Steel Limited 18 October, 2016

LYT0

040

18.1

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