Robeslee Lintels
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Transcript of Robeslee Lintels
P R E S 1 R E S S E D
l W
1 I N T E 1 s
YOU DESERVE THE BEST. AT ROBESLEE WE'RE
DETERMINED TO MAKE SURE YOU GET IT.
Choose Robeslee and you get light, strong lintels built
to BSS977.
You get steps, cills and copes with the fine quality that
only hand-made craftsmanship can ensure.
And you get speciality products, custom built to your
exact needs.
What's more, you get the confidence of dealing with a
quality assured company.
On top of all of this, we offer genuinely competitive
prices too. Our factory is the largest lintel production unit in
Scotland - by far. So our economies of scale mean low prices
to you.
And it's well placed, just minutes from the heart of the
country's motorway network - so wherever your site is, it's
within easy reach of Robeslee.
ROBESLEE CONCRETE IS USED IN MANY CONSTRUCTION PROJECTS
THROUGHOUTTHECOUNTRY.
A T 0 W
REFURBISHMENT PROJECTS THROUGHOUT
BRITAIN .
4
P
~
1 I N T E 1 S P R E S T R E S S E D
.-I COMPUTER CONTROLLED MIXING ENSURES CONSISTENT PRODUCT QUALITY TECHNOLOGY,
SYSTEMS, S K I LLS,
COMMITMENT, AND
LOW-PRICES, ALL PART OF
ROBESLEE,
JACKING THE BEDS TO ENSURE PRECISE TENSIONS IN OUR PRE-STRESSED LINTELS
W E R
I A T ROBESLEE QUALITY IS BUILT ON TECHNOLOGY.
3 u r production line - the longest for pre-stressed lintels i r
Scotland - bristles with innovative features. Many are built tc
our own specification and design so we can guarantee the
highest quality at the lowest cost.
Computer-controlled batching means mixture and
consistency remain the same. Batch after batch after batch.
And in our steps and cills facility, skilled craftsmen utilise
the most advanced machinery. Again, much of it is custom
built for Robeslee.
All production is co-ordinated and costed using advanced
software - so both lead times and prices are cut to the bone.
Technology, allied to superb craft skill and an unerring
commitment to customer service - these are the foundations
of Robeslee Concrete.
This brochure is part of our service to you. Over the page
you will find full details of our entire product range.
OUR CUSTOM BUILT PLANT AND MACHINERY
EXTRUDES THE CONCRETE AND CURES
IT USING OUR UNIQUE HEAT TECHNOLOGY
F S T R E N G T H
COMPOSITE LINTELS TYPE A /100170mmj Permissoble U.D.1. in kN/m per loyer of brickwork
600 900 1200 1500 1800 2100 00
Without Brickwork 9.00 6.37 3.86 2.58 1.85 1.39 1.08
1 Layer of Brickwork 10.50 9.00 7.01 5.00 2.75 1.62 1.31
2 Layers 12.00 10.21 9.50 8.00 4.38 2.75 1.46 1.35 1.31
3 Layers 16.25 12.50 10.60 9.37 5.75 4.44 2.50 2.25 2.00
5 Layers 30.00 25.80 20.21 15.37 12.00 8.00 4.75 4.50 4.25
t'ermissoble 0.D.l. in kN/m per loyer of brickwork
NON-COMPOSITE LlhlTELS Permissoble U.D.l. in kN/m
CLEAR SPAN (mm) 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900
- 30.10 20.00 13.40 9.58 7.20 5.17 3.70 2.74 2.09 1.62 1.29
54.70 38.10 29.20 23.70 19.90 17.20 14.70 12.10 10.00 8.51 7.29
25.00 19.30 14.20 10.20 7.65 5.95 4.77 3.90 -
CdlMP6SlTE LINTELS I TYPE A (IOOX70mm) TYPE B (145X70mm) 1 TYPICAL APPLICATIONS
rn Composite lintels, Type A and Type B, are best used in conjunction with
brickwork or blockwork - see tables for loadbearing capacities.
‘I. It is essential that the first two layers of brickwork, or one layer of
blockwork, are laid with special care and that the mortar joints both
vertical and horizontal are properly filled, leaving no voids.
(1:3 cement, sand mortar is recommended).
2. Building blocks may be used if they are solid and have a minimum
crushing strength of 3.0N/mm2
3. In lintels over 1.500m props must be used at the quarter points until
mortarwork has matured.
4. Where a D.P.C. is used it must be placed over the second layer of the
blockwork - see sketch detail.
5.Minimum bearing of 150mm each side, o r as directed by the
structural engineer.
These lintels are designed to take direct imposed loads. Rafters, wall
plates and floor joists may be accommodated as directly imposed
loads - see tables for loadbearing capacities.
BEARING: Minimum of 15Omm each side or as directed by the
structural engineer.
PROPPING: Propping is not required with this type of lintel.
BRICKWORK: Non-composite lintels d o not require brickwork
bonded to them. Point loads from girders, trusses, steel beams ect.
require to be referred to our Customer Advisory Service.
POSITIONING: Lintels must be placed with wire in correct position.
Lintels are marked top.
ORDERING: All sizes listed are normal stock sizes.
All lintels are designed in accordance wzth - BS 5977: Part 1 : 1981,
BS 8110: Part I : 1985, BS 8110: Part 2: 1985.
Concrete used I S Grade 50. Fire resistance is 1 hour (ref BS 8110.1985, Part 2, Section 4).
Fire resistance can be improved by the application of non-combustible finishes.
The euoluhon of new designs i s contznuous, and information I S sublect to change without
notice. Customers should check with the supplier to ensure that they have the latest details. No liability or responsibility o f any kind (including liabzkty for negligence ) is accepted in
respect o f advzce, recommendations or specifications supplied by the company, its Servants or its Agents.
BS 5977: Part 2: 1983,
I Y
IT A
TYPE S I SECTION 175 X 75 - 50 X LENGTH.
TYPE S2 SECTION 21 5 X 75 - 50 X LENGTH.
SPECIAL SECTIONS MADE TO CUSTOMERS DESIGN AND SPECIFICATIONS.
EPS Cost in fhree rfnndnrd serfions -
ST1: LIdppi x 300 x 150
sa? LI" x 300 x 200
SPECIAL SECTIONS MADE TO CUS'I'UMERS DESIGN AND SPECIFICATIONS.
1 COPES dvnilnhle in plaiii concrete, toloured or exporedaggregate finishes.
I r A
I
SINGLE WEATHERED DOUBLE WEATHERED
TYPE WIDTH '"HEIGHT LENGTH
SW1 175 75/50 900 SW2 225 75/50 900 SW3 300 751 50 900 SW4 350 751 50 900
TYPE WIDTH 'H'HCIGHT LENGTH
DWl 175 75/50 900 DW2 225 751 50 900 DW3 300 751 50 900 DW4 350 751 50 900
SPECIAL SECTIONS MADE TO CUSTOMERS DESIGN AND SPECIFICATIONS.
- 1
A A
A A
R O U N D TOP
HEIGHT WIm LENGTH
152 51 900
FIAT TOP
HEIGHT WIDTH LENGTH
205 51 900
T-BEAM FLOORS
STANDARD CENTRES SECTIONS Maximum Spuns fml for imposedhmd kN/d I
SINGLE 520 mn/d1
SINGLE 408 ~.9kN/d1 L
DOUBLE 644 (z.zkn/di
The above table shows maximum clear spans in metres for the Robeslee T42 Floor Beam (125x155)
under uniformly dis t r ibuted live loads using 1350 kg lm ' solid blocks.
An al lowance of 1 2 0 kN1m' for finishes has been made when calculating the table .
Block cut to suit
1 Split course by
Slip blocks or split course under infill block at walls
DPC by builder
1
builder
a
lOOmm block
Main loadbearing walls built over support walls
Additional beams below walls depending upon spans etc.
TECHNICAL INFORMATION The T42 Floor Beam, combines concrete beams and infill blocks to provide a highly effective and easy to install flooring system.
The T42 Beam is nominally 155 deep and weighs 40kglm. It is manufactured using concrete with i
strength of 50 Nlmm'.
inflll Blocks Infill blocks can be any standard building blocks (440x215~100) complying with BS6073:Part 1-1981. They must have a minimum density of 1350 kglm' and have 3.5 Nlmm' - minimum strength. For increased sound resistance we recommend using blocks with a density of 1800 kg/m'.
Bearings All beams should be placed perpendicular to the end supports unless otherwise shown. Each beam requires a minimum end bearing of l00mm to each end when supported by brickworklblockwork and 75mm when supported by steelwork.
Grouting A 3 : l sand:cement should be brushed into the joints between the beams and the blocks.
Floor Flnirkes When laid the floor can take a wide variety of finishes. We would recommend the use of a sand:cement levelling screed before the application of final finishes. Garage floors require a 50mm concrete screed using a Grade 25 concrete and sui table reinforcement.
Cut Blocks All blocks are to be cut using suitable mechanical means to leave a clean, vertical square edged face.
Slip Blotks Slip Blocks 440 x l0Ox 40 (nominal) are used around the perimeter of the floor to make up the difference in level between the underside of the blocks.
krvlce Holes Infill blocks may be omitted as necessary to accommodate services.
Air Vents Void ventilators are required by the NHBC and the spacings may vary. Please consult vent manufacturers for details and supply.
Handling Care should be taken to ensure all beams are lifted horizontally. Beams should not be lifted upside down or allowed to rotate while being handled.
Camber As the beams are made from prestressed concrete they have slight upward camber . Due al lowance must b'e made for this in determining finishes an overall floor thickness.
The T42 Floor beam has been designed using our 'STAR' technology system (in accordance with BS 5977 Part 1: 1981 and Part 2 1983 and BS 8110 Part 1: 1985 and Part 2: 1985) and is manufactured using an advanced extrusion method a t ou r factory in Kirkintilloch.
The T42 Floor beam can be made to any required length up t o 6 metres within given limits.
Robeslee offer a free technical and computer aided design service ( te lephone 0141 775 2677) to assist you in the use of the T42 Floor Beam. The service provides comprehensive details of floor layouts, working drawings and quantity requirements.
DPC