mffi Lembaga Pembangunanlndustri Pembinaan MalaysiaCONSTRUCTION INDUSTRY DEVELOPMENT BOARD MALAYSIAlbu Pejabat CIDB, Tingkat 7, Grand Seasons Avenue, No 72, Jalan Pahang 53000 Kuala LumpurP.O Box. 12278, 50772 Kuala Lumpur. Tel: 603-26170200 Fax: 603-40451808http://M.cidb.gov.mymm

GTIIEMALAYSIA

STANDARDINDUSTRIPEMBINAAN(CONSTRUCTION INDUSTRY STANDARD)

cls 18" 2010

MANUAL FOR IBS CONTENTscoRrNG SYSTEM (!BS SCORE)April 201 0

O Copyright

LEMBAGA PEMBANGUNAN INDUSTRI PEMBINAAN MALAYSIA

slP,H@IBS CENTRE1"t Floor,Block E, Lot 8,Jalan Chan Sow Lin,55200 Kuala Lumpur

Tel :603-9281 6909Fax :603-9281 5870

www.ibscentre.com.my

Perpustakaan Negara Malaysia Cataloguing-in-Publication Data

First Edition 2005Second Edition 2007Third Edition 2010

Bibliography : p.30tsBN 978-967 -5317 -20-01. lndustrialised Building.2. Building-Automation.3. Construction industry.690

1.0

2.0

3.0

4.4

GONTENTS

Page

tNTRODUCT|ON..........

OBJECTIVE

PRINCIPLES OF IBS CONTENT..

THE IBS CONTENT SCORING SYSTEM -

4.1 IBS Score for Structural System.....4.2 IBS Score for Wall Systems.....4.3 IBS Score for Other Simplified Construction Solr,: c-s4.4 IBS Score for Project with Group of Buildings

6.0 CONSTRUCTION AREAS AND WALL LENGTHS

6.1 How to Calculate Construction Area........... 'a6.2 How to Calculate Wall Length6.3 How to Calculate IBS Score for Part 1: Structural Systers

and Part 2: Wall Systems6.4 How to Calculate IBS Score for Part 3: Other Simplifiec

Construction Solutions .. ' :Standardised Component (based on MS 1064) ...........How to Calculate IBS Score for Standardised Grids .. ... ::

7,0 REFERENCES

6.56.6

FOREWORD

The goverment has put a lot of emphasis to move away from labor intensive activities towardtechnology intensive activities. This is part of the initiatives to achieve the objectives of producingand delivering high quality product, value for money and to stay competitive.

Over the years, CIDB has taken many initiatives to industrialise the Malaysian constructionindustry by promoting the use of lndustrialised Building System (lBS). As an initial step towardsopen industrialisation, CIDB also promotes the use of standardised building components andoff-site construction.

The IBS Content Scoring System (lBS Score) is systematic and structured assessment systemthat can be used to measure the usage of IBS in a cosistent way. lt is intended to be a guide forthose who are interested in measuring the content of IBS in any buildinng project. The IBSScore can be used, for any purpose, be it for satisfying the regulatory requirement and also forsatisfying the requirement of any incentives program.

I hope this guide will become an important initil effort towards achieving open industrialisationof the construction industry.

Datuk Ir Hamzah HasanChief ExecutiveCIDB Malaysia

Scope

This Manualfor IBS Scoring System sets the formula, tables, method and exa--- ='.: -.= -- .'.:the IBS score for building projects.

Definitions

For the purpose of this manual, the following definitions shall apply:

IBS

IBS Factor

IBS Score

Other SimplifiedConstruction Solutions

MS 1064

Gategories of Building

lndustrialised Building Systems.

A value given to particular building system whlch re'E:. :-=relative difference in site labour productivity

The score for computing the total IBS conrpc-:-: -s=- - jbuilding project as set out in the manua

Utilisation of construction innovative rnet^::: :-:- - :-:that can contribute towards labour sa\/'t^:s a'-z-::: :-: -,and productivity.

Malaysian Standard "Guideto Modu a' C::': -='- -- - :- : - :

.r*q+lBSScorecanbeappliedtoall newresidential,commercial.indusre.': -:- --.:-:buildings and other projects as categorized in Table A :

Table A :

I

Residential (landed) T^--^^^ -^ ^^a -= - .-: =.Se- -::'.2-':: ---s:. Q -^: ^ .

. Clusjerec -l-s -l

Residential (non-landed) . Condominium. Flat. Services apartment. Apartment. Hostel

CATEGORIES TYPES OF BUILDING

. Bank

. Departmental store

. Shopping centre

. Office building

. Supermarket

. Restaurant

. Hotel

. Conventional hall and facilities

. Exhibition hall

. Factory

. Warehouse

. Sub-station

. Library

. Hospital

. Home for the aged

. Childcare centre/ Nursery

. Educational facilities

. Terminal Building

. Campus

. Medical centre

. Camps

. Embassy

. Museum

. Crematorium and Columbarium

. Club House

. Cinema / Theatre

. SporU Recreational facilities

. Public transports stations

iii

CATEGORIES TYPES OF BUILDING

Commercial

lndustrial

lnstitutional and others

1.0 lntroduction

Prosperity and high economic growth in Malaysia has created a high demand fur sxfructi:nactivities. As a consequence, this has attracted huge number of foreign workers inb tis co.rtryto take up employment on site as unskilled labour doing manualjobs. Despite trci cutbhfins.the country is in a quagmire with a host of problems such as low quality works, delays- Eages, social problems, diseases, etc.

As such, some form of government intervention is highly needed. lndustialbatbn cf tEconstruction industry is seen as the only feasible way forward. The govemment ha H qt acomprehensive national lndustrialised Building System (lBS) Road Map for the smtutrrindustry players to adopt in the industrialisation programme of the construAion hdsfy-Essentially, the Road Map evolves on the policy of phased reduction of dependency m fuei7tlabour and encouragement policy on the investment in technologies, techniques and processesof construction. lt lays out definite action plans which when successfully implemented sHensure a successful upgrading of our construction industry.

As a push for more utilisation of lBS, a number of encouragement and regulatory requirementshave been put forward. An example of such regulatory regulatory requirements is theimplementation of minimum IBS Score in government building projects.

To standardize the method of measurement of IBS Score, CIDB published the Manual for IBSContent Scoring System in 2005. The manual has provided a systematic and structuredassessment system that can be used to measure the usage of IBS in a consistent way. Sinceits introduction, CIDB received a lot of suggestions for enhancements and improvements toexisting manual. Taking into account the introduction of new technologies, new policies andenvironment, CIDB after consultations and input from the construction industry, publishes thisedition of manual.

This 2010 edition of IBS Score Manual replaces the 2005 edition.

2.0 Objective

The objective of this Manual is to provide a well-structured assessment system for the IBSScore. lt sets out the IBS Score formula, the IBS Factor for each of the elements used in thebuilding, methods of calculating the IBS Score, explanatory notes as well as samplecalculations. lt is also intended to provide guidance for every professional to evaluate the IBSScore for any building project.

3.0 Principles of lBS Score

The IBS Score puts emphasis on the following attributes: -

a) the use of prefabricated and precast concrete components

b) off-site production of components

c) the use of standardised components

d) repeatability

e) design using Modular Coordination concept

Higher IBS Score is a reflection of a higher reduction of site labour, lower wastage, less S>materials, cleaner environment, better quality, neater and safer construction sites. fusfurptidcompletion as well as lower total construction costs.

The method of determining the IBS Score is designed to be a simple but efbcfire trc.Points are awarded based on the IBS Factors of the structural and wall elernenb used- TIEpresence of high repetitiveness in the design as well as other simplified constnrctbr sd.futsshall also contribute to the total score. The points are summed-up to gi\,e tE IBS Scre d abuilding. IBS score for the whole project development that consists of a grutp d hifirgF b ahoprovided.

1

4.0 The IBS Content Scoring System (lBS Score)

Maximum IBS Score for a building is 100 points. The IBS Score is made up of the followingcomponents:

a) Part I -Structural Systems (Maximum score is 50 points)Points are awarded for various types of structural system usede.g. precast concrete beams and columns, steel, prefabricated timber, etc

b) Parl2 - Wall Systems (Maximum score is 20 points)Points are awarded based on various types of wall systems usede.g. precast concrete panel, glass, dry partition, block work, etc.

c) Part 3 - Other Simplified Construction Solutions (Maximum score is 30 points)Points are awarded based on usage of other simplified construction solutions. e.g.standard components based on MS 1064, and repetition of structural layout.:

The formula

IBS SCORE = SCORE FOR STRUCTURAL SYSTEMS

+

SCORE FOR WALL SYSTEMS

+

SCORE FOR OTHER SIMPLIFIED CONSTRUCTION SOLUTIONS

50I + 20>.1* +sF.)*lQt

Where:

IQs

Qst

Fg

Qw

QwrErw

S

- Sum of

- Construction area of a structural system

- Total construction area of building includes roof

- IBS Factor for structural system from Table 1 & Table '1A

- Length of a wall system (external or internal wall)

- Totalwall length (external and internalwall)

- IBS Factor for wall system from Table 2

- IBS Score for oiher simplified customer solutions from Table 3

2

Where:

Qs/ Qs

Fs

4.1 IBS Score For Structural Systems

- the percentage of the construction area of wtrfufi a parti:.far sfilcfund systemused; out of the total construction area of the hddig irdderod

- IBS Factor for the particular structural systern from Table 1 and Table 1A

Maximum IBS Score for this part is 50 points.

The IBS Score for a particular structural system is the product of the percentageconstruction area covered by the systern and the corresponding IBS Factor fromTable 1. ln order to arrive at the IBS Score, it is multiplied by the score of 50points.

For simplicity, the dimensions for the calculation of construction areas may beread from the grid line or other methods such as direct measurement frorn drawirqs.The construction area for structure is taken as the plan area covered by thebuilding line underneath it. As such, the construction area for roof is sirnilar toconstruction area of beam/column underneath it. Refer examples in Sedirn 6-

For elements that are not horizontal, e.g. roof, staircase and all ofrrer dopedsurfaces; plan areas shall be used for the calculation.

IBS Score calculation includes superstructure elements of a bulflrg trrty-Sub-structure works, driveway, apron and landscape areas re nd Hen ifuaccount in the calculation.

Table 1 provides the IBS Factors for combinations of otrrrrrn lffi ildcolumn/beam systems that are used while Table 1A, irdh# Fs, fu wilrtypes of roof system. For a particular structural sy:stem thd ae rd orrufyused and not mention in Table 1, the Fs can be obtained frorn BS Cerfe, CfB-

For building that uses multi-structural systems, tte mfttt*n ddr ffiis calculated and totalled up to arrive at ihe tohl IBS ScEebtEcmffitof the structural systems.

a)

b)

c)

d)

e)

0

s)

ulF<t)

U)

Precastconcreteslab{1)

ln-situconcrete

onpermanent

metalformwork

ln-situconcrete

usingreusable(3)

systemformwork

NoFloor{8)

UJF[Juzo

Precast column andbeam

1.0 0.9 0.7 0.6 1.0 1.0 1.0

Precast column and in-situ beams usinoreusabld3)systef,rformwork

0.9 0.8 0.6 0.5 0.9 0.9 0.8

Precast column and in-situ beams usingtimbela) formwork

0.8 0.7 0.5 04 0.8 0.8 0.7

Precast beams and in-situ columns withreusabld3) systemformwork

0.9 0.8 0.6 0.5 0.9 0.9 0.8

Precast beams and in-situ columns usingtimber(a) formwork

0.8 0.7 0.5 0.4 0.8 0.8 0.7

ln-situ column andbeams using reusable(3system formwork

0.7 0.6 n< 0.3 0.7 0.7 0.6

ln-situ column andbeams usingtimbelal formwork

0.6 0.5 U,J 0.0 0.6 0.6 0.0

SY

^e8<nsefr5

m9

Vertical and horizontalmember systems /structure

0.8 0.7 0.6 0.5 0.8 0"8 0.7

)LlJL!FU)

Steel columns andbeams

1.0 0.9 u.l 0.6 1.0 1.0 1.0

Table 1. IBS Score For Structural Systems

Notes :

1 . Precast concrete slab include half slab, hollow core slab, and precast prestressed planks.

2 . Precast concrete include products offactory precasting, site precasting or the useoftillup systems.

3 . Reusable formworks include plastic, fibreglass, steel, aluminium and other metal formworks that can be used not less

than 20 cycles.

4 . Timber formwork means the timber components are sized, cut and fabricated in-situ to form the formworks and the

required temporary works.

5. Forstructural systemusingLoadBearingWall,whetherprecastorin-situ,thefactorcanbedeterminedfromthetablebytreating the wall as a wide column.

6 . The IBS factor for tunnel formwork system is 0.6.

7 . Load-bearing blockwork include interlocking block, concrete masonry unit, hollow block and lightweight block.

8 . This is for structures without floor. Refer examples in Section 6

9 . For other stuctural systems not mentioned in the table please refer to IBS Centre, CIDB for the IBS Factor.

ln-situconcrete

usinglimIs1(+)formwork

Steelflooringsystem

Timberframe

flooringsystem

4

Table 14 provides the IBS factor. Fs for various types of roof system.

Table 1A. IBS Factor for Roof Structural Systems - Fs

Notes:

1 . Precut means the metal section are cut and sized n *y rt:en$led in-situ.2 . Timber roof trusses means the timber comporere aE crt sEEd ad iabricated in-situ to form ihe formworks and the

required temporary works

IBS Score For Wall Systems

20 r. I.l

Q,,

Q,,_Where:

Qw/ Qvvr -

a)

b)

The ratio of the length of aused out of the total wall

IBS Factor for the particular

The IBS S::-='-' ', = :. s:=- s :-: :

lengtn CC,=-= - a '- = '= :.:::* =-arriveattre ill---= --.: ::,External base-=- , = '-' ==--c)walls are exc -:=: '-: - --.separate skins as : ..,;

Prefab timber roof truss

Prefab metal roof truss

Precut(l) metal roof truss

Timber roof trussesl2'

NO ROOF SYSTEM IBS FACTOR

a. 1.0

b. 1.0

C, 0.5

d. 0.0

d) Parapets and corridor/balcony wall must be counted for in the calculation.

e) For buildings that use multi-wall systems, the contribution of each system is calculatedand totalled up to arrive at the total IBS Score for the wall systems.

0 Table 2 provides the IBS Factors for various common wall systems. For a particularuncommon wall system not mention in Table 2, the factor can be obtained from IBSCentre, CIDB.

Table 2. IBS Factor for Wall Systems

Notes :

1. Precast concrete panels include sandwich panel, solid panel and bay-window. Precast concrete includes products

of factory precasting, site precasting or the use of tilt-up systems.

2. Wall cladding consists of panel actings as wall or facade and not as a skim to brickwall.

3. For full height windows, use the IBS Factor for panel glass. For wall with non-full height windows, take the higest

orwidest material e.g. brickwall, precast wall, glass, etc.

4. Precast dry wall include cementitious panels and composite gypsum boards.

5. Reusable formworks include plastic, breglass, steel, aluminium and other metal formworks that can be usedrepeatedly.

6. Timber formwork means the timber components are sized, cut and fabricated in-situ to form the formworks and therequired temporary works. This is commonly referred to as stickbuilt formwork. Timber includes plywood.

7. Blockwork System either (loadbearing or non-loadbearing) includes hollow block, interlocking blocks, lightweight

concrete blocks that can be laid on adhesive mortar.

B. Pre-assemble brickwall/blockwall means bric* that being laid in form of a panel and transported to site.

9. Wall constructed using tunnel formworks, use Factor of 0.6.

1 0. For other wall system not mentioned in the table please refer to IBS Centre, CIDB for IBS Factor.

1 Precast concrete panel (1) 1.0

2 Wall cladding t2) 1.0

3 Prefabricated timber panel 1.0

4 Full height glass panel(3) 1.0

5 Dry wall system(4) 1.0

6 ln-situ concrete with reusable(5) system formwork 0.5

7 ln-situ concrete with timber(6) formwork 0.0

8 Blockwork Slste6(z) 0.5

9 Pre-assemble brickwall / blockwall (8) 1.0

10 Common brickwall 0.0

NO WALL SYSTEM IBS FACTOR

a)

b)

c)

d)

4.3 IBS Score for Other Simplified Construction Solutions

Part 3 of the formula provides points for those who utilise cons:--::.- -:--:,:s --solutions that can contribute to the objectives of industrialisation throug- s= -: =': ]':':

- s ; - :repetitions.

Points are given based on the percentage of usage or coverage .' 2..-- --.' >- -.:-andsummeduptoformthelBSScoreforthissection.Nopoin:s.'.:,:-':;-:.=:=:less than 50%.

The maximum score for this section is 30 points.

For item 1 - Utilisation of standardised components based cr ','Sbe read conjunction with Malaysian Standard MS 1064: ?z-.'- :--'Sizes and Preferred Sizes for Reinforced Concrete Compc-e':s

e) The percentage of usage for each type of design featLre s l , :;:i) sox sx<75ohii) 75o/o<x< 100%

7

Table 3. IBS Score for Other Simplified Construction Solutions

Notes :

1 . Refer to MS 1064 : Pt 10 : 2001 Coordinating sizes and preferred sizes for reinforced concrete components. Valuesto use from the tables : beams and columns - width & depth, walls - width(thickness), slabthickness.

2. Refer to MS 1064 : Pt 4 : 200'1 Coordinating sizes and preferred sizes for door sets.3. Refer to MS '1064 : Pt 5 : 2001 Coordinating sizes and preferred sizes forwindow sets.4. Precast finished componenVproduct means component that does not needs any finishes after installation on siie

such as plaster, skim coating and painting.5. For structure using load bearing wall system, (without beams & columns) 8 marks is given automatically.6. For non-concreie beams, columns, and slabs, 4 marks is given automatically for each component.7. Other labour reducing products. Please provide details in the submission.

i) Bea65 {1) Nos 2 4

ii) Colum65 {1) Nos 2 4

iii)Wal15 t1) m 2 4

iv) Slabs {1) m2 2 4

v) Doo;s t2) Nos 2 4

vi) Windory5{3) Nos 2 4

i) Repetition of floor to floor height Nos 1 2

ii) Vertical repetition of structural floor layout Nos 1 2

iii) Horizontal repetition of structural floor layout Nos 1 2

Horizontal repetition of structural floor layout Nos 3 6

8

No DESCRIPTION

IBS SCORE

PERCENTAGE OF USAGEUNII

50% S x<75o/o, 75Yo3 x S100%

1

UTILISATION OF STANDARDISED COMPONENTS BASED ON MS 1064

2

REPETITION OF STRUCTURAL LAYOUT

a) For building more than 2 storeys

b) For building I or 2 storeys

4.4 IBS Score for Projects with Group of Buildings

a) ln the case of a group of buildings in one project, the IBS Score of the project shall becalculated by multiplying the percentage of construction area of the respective building(out of total construction area of project); with the IBS Score of the individual building.

I [,,' SCORE FOR BUILDING X

Where:

I - Sumof

Qsrbuirdinsl - Total construction area of building rcluCes roof

Qsr6rolectl - Total construction area of all building includes roof

b) All major structures in the project, including car paix bLrllding. surau, etc. are to be consideredwhen computing the area covered by respecttve systems,

c) Minor structures, e.g. guardhouse. thrash bin and others should be excluded from thecalculation provided that they are not within or structurally linked to the main building

H]

\

l

o

I

i

5.0 IBS Score Calculation Examplesln this section a number of examples are given to illustrate the calculation methods for determiningthe IBS score for various types of building.

5.1 Example 1:

Double Storey Terrace House.

Typical layout floor plan for one unit is as shown.

Say, from measurement taken from drawings:

1l Construction area

Construction area ground floor = 117.0 m2Construction area 1"t floor = 117.0 m2Construction roof area = 117.A m2

I

I

Total construction area

2l StructuralSystems

i) Beams:ii) Columns:iii) Floor slab:iv) Roof truss:

3) Wall System

lnternalwall:Externalwall:

= 351.0 m2

Precast concrete beamsln-situ concrete using steel formworksPrecast half slabs floorPrefabricated timber roof truss.

Precast concrete panelPrecast block works

i)ii)iii)

i)ii)

10

masterbedroom

4) Other simplified construction solutionsi) Beams:

Columns:Walls and Slabs:Doors:Windows:

ii) Horizontal repetition of structure = 100o/o

60% complies with MS 1064 Part 10:2001'100% complies with MS 1064 Part 10:200'1Lessthan 50% complieswith MS 10M Part 10:2001B0% complies with MS 1064 Part 4:20010% complies with MS 1064 Part 5 : 2001

From the information given the calculation can be tabulated as follows

Precast beams + in- situ column withreusable formwel( + precast concrete halfslab floor.Ground floor area = 117.0m

2

117.0 m2

Precast beams + in-situ column withreusable formwork (no floor)1"t floor area = 117.om2

117 .O m2

Roof truss using prefab roof trussRoof area = 117.Om2 117.a m2

External wall using concrete blockworks

lnternal wall using precast concrete panel

i) 60% beam sizes follow MS '1064 Part10:2001

ii) 100% of column sizes follow MS '1064

Part 10: 2001

iv) Horizontal repetition of structure = 100%

IBS CONTENTS SCORE OF PROJECT (Part 1 + Part 2 + Part 3)

(l ) Refer to respective tables for IBS Factors

ELEMENTS AREA {m2) orLength (m)

rBsCOVERAGE

tBsSCORErA9 I rJt(

Part 1: Structure Elemenls

Total Part 1 351,0 m2 "::

Part 2: Wall System

87.8m

79.5m

Total Part 2 167.3m . :,:

Part 3: Other simplified constructionsolutions

ii)80% of door sizes follow MS 1064 Part4:2001

11

5.2 EXAMPLE 2:

18 storey condominium.

Typical layout floor plan for one floor is as shown.

Floor Plan1) Construction Area per floor

i)ii)iii)

2)

3)

Structural Systems

Area for 1 unit of condominiumLift lobby areaArea for 1 floor = 194.4 x 6 units + 140I

94.4 mz140 mz706.4 mz

: prefab steel roof truss.i)ii)

i)ii)

Tunnelformwork systemRoof truss

Wall System per floor

Precast blockworks wall (6 units + lobby area)Tunnelformwork (6 units + lobbyarea)

= 263m length= 120m length

DINING unlt 5

12

4) Other simplified construction solutions

Doors : 100o/o comply to MS 1064 Part 4 : 2001Windows : 100% comply to MS 1064 Part 5 :2001Repetition of floor to floor height =

i)

ii)

Vertical repetition of structural floor layout90%81Yo

i) Tunnel formwork systemTotal area= 706.4m' x 18 storey = 12,715m'?

ii) Roof truss - prefab steelRoof area = 706.4m2

i) Blockworks wallTotal length= 263m x 18

ii) External wall: tunnel formworkTotal length= 120m x 18

i) 100% door sizes complies to MS1064

ii) 100% of windows complies to MS1064

iii) Repetition of floor heighi = 90%

iv) Vertical repeiition of structurefloor layout = B0%

IBS GONTENTS SCORE OF PROJECT 1Paft 1 + Part 2 + Part 3)

13

ELEMENTS AREA (m'z) orLength (m)

FACTOR COVERAGE IBSSCORE

Part 1: Structure Elements

12,715 m'? 0-6 | 12,715t13,121I <)"S5

, _ ::. _: :_

=-: :

706.1 rr:

Total Part 1 13.421 .4 1r,

Part 2: Wall System

Total Part 2 o 5:-

Part 3: Other simplified constructionsolutions

2

2

Total Part 3 12

53.6

5.3 EXAMPLE 3:

Galculation of IBS Score for a project (Group of Buildings)

The site plan for a housing development project is as shown.

SITE PLAN

i) BlockA- 5 storey apartment

Construction ?reo, Qsr (ouiroing a)

IBS Score@uitainge)

ii) Block B - 5 storey apartment

Construction area, Qsr (uuiraing e)IBS Score (buitdins B)

iii) Block C - 4 storey apartment

Construction area, Qsr (ouiroing c)IBS SCorelouiroins c1

iv) Block D - 4 storey apartment

Construction drea, Qsr(uuitdinsD)

IBS SCole@uiraing oy

= 3,000 m2

=83

= 3,000 m2

-- 87

= 3,200 m2

=35

= 3,200 m2

=47

14

BLOGK D BLOCK

v) Block E - 3 storey office block

Construction area, Qsr(buitding E) = 3,000 m:IBS Score(ouitoing e)

Totalconstruction area (blockA+ B + C + D + E ) = 1544C'r2

IBS Content Score for the project can be calculated using the following iormr.,l a

IBS Score for project =

IBS Score of building X Qsrr**,*l

Qsrr*io)

The calculation can be tabulated as in the table be :,',

Thefore the IBS score forthe whote o' I^e oe,= r:-=-: :':.ect s 65.1

l

A 3,0003000 / 15400

= 0.19583 0.195 x 83 = '16 2

B 3,0003000 / 15400

= 0.19587 0.195 x 87 = '- -

c 3,2003200 I 15400

= 0.2135

D 3,2003200 I 15400

= 0.2147

E 3,0003000 / 15400

= 0.19575

Total 15,400 1.0 65,1

15

Block ConstructionArea (m2) Coverage IBS Score,a"i$i'gl ' IBS Scorelprolectl

6.0

6.1

Construction Areas and Wall Lengths

How to Galculate Construction Area

o Measure from grid to grid (ignore offset of beams/walls to gridlines). lgnore balcony area from calculation

Construction Area for beam/column/slab

Construction Area for roof

How to Calculate Wall Length

. For curved or diagonal wall (balcony, bay window etc.), assume straight wall

. For external wall, measure wall length from grid to grid. (lgnore column)

. For internal wall, measure actual wall length

6 x 1060 m2

6x1060 m2

6.2

16

\/X

/\

10m

Wall Length

i) Externalwall

ii) lnternalwall

10m

', l-::

oo-

17

6.3 How to Calculate IBS Score for Part 1: Structural Systems and Part 2: Wall Systems

The approach is always to treat the components as performing in an "n-shape" structure

slabbeam

wall

column

ldentify beamldentify columnldentify floor

; say in-situ roof beam using timber formwork; say in-situ column using timber formwork; no floor slab

Therefore, from Table 1, the IBS Factor is 0.

ldentify roof system ; say prefab timber

FirstFloor

.- 'n-shape"4

l

As an example,

For Ground Level:

Consider types of structure used for 1st Level Beams, Ground to 1st Level Columns, 1stLevel Floor and Ground Level Walls.

For 1st. Level:

Consider 2nd Level Beams, 1st to 2nd Level Columns, 2nd Level Floor and 1st Level Walls.

For2nd. Level:

Consider Roof Level Beams, 2nd to Roof Level Columns, Roof Level Floor and 2nd. LevelWalls.

lf the top has roof trusses instead of the roof slabs (no floor), calculations for roof systemneed to be done.

For a 1-storey building without roof slab

18

CelelSlloor

GroundFloor I

From Table 14, the IBS Factor is 1.0

Calculate the area covered by the beams/columnsCalculate the area covered by the roofTotalareaIBS Score (columns beams)

IBS Score (roof)

Totat IBS Score for Part 1: Structural Systems=25

ldentify wall system ; say common brickwallFrom Table 2, the IBS Factor is 0

Calculate the length covered by the walls

IBS Score (walls)

Total IBS Score for Part2: WallSystems

; say 50m2; say 50m2= 100m2

= 50 x 50/100 x 0-0=50x50/100x1.0-aE-ZJ=0+25

; say 50m

=20x50/50x0

_U

6.4 How to Galculate IBS Score for Part 3: Other Simplified Construction Solutions

The approach is always to treat the components as performing in an "n-shape" structure

. Floor height is measured from finished levelto finished level

h = floor height

A beam in between two supports is c:-'::: .: :-= =.a1A column in between two floors is ::-s =a':=

-=::-= :olJmn.a

a

6.5 Standardized Components (Based on MS 1064)

Points are awarded based on the percentage of components (beams, columns, walls, slabsdoors and windows) that comply with the preferred sizes as defined in the MS 1064.

Say, a building has a total 100 columns; with the following sizes:

200mm x 200mm: 60 numbers250mm x 250mm: 10 numbers375mm x 375mm:30 numbers

Between these three types, the sizes that are in MS 1064: Part 10:2001 Section 3 are200mm x 200mm and 250mm x 250mm.

Therefore, percentage of column that complies to MS is,

= (60 +10) I 1OO x 1O0o/o

= 70o/o

Based on Thble 3, the IBS Score for columns is 1.

Another example; say, a building has a total 100m run of walls; with the following sizes ofwidth(thickness) :

100mm:60 m run130mm:40 m run

Between these two types, the size that is specified in MS 10M Part 10: 2001 Section 3 is100mm.

Therefore, percentage of column that complies to MS is

= 60 /'100 x 100%= 60%

Based on Table 3, the IBS Score for walls is 1.

6.6 How to Calculate IBS Score for Standardized Grids

6.6.1 Repetition of floorto-floor height (Typical floor height)

Say, the building has 6 levels including basement.

Basement to Ground Floor = 29M = 2900mmGround Floor to 1st floor = 29M = 2900mm1st Floor to 2nd Floor = 30.5M = 3050mm2nd floor to 3rd Floor = 30.5M = 3050mm3rd floor to 4th Floor = 30M = 3000mm4th Floor to Roof = 30M = 3000mm

Therefore, take the height with the most repetition:29M, 30M and 30.5M: Repeated two times each.As we have three sets of typical layouts, consider a set only.

Therefore, percentage of coverage = 216 x 100o/o

= 33o/o

Based on Table 3, the IBS Score for repetition of floor-to-floor height is 0.

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6.6.2. Vertical repetition of structural floor layout (Typical floor plan)

Structural (load-bearing) layout of the unit below must be identical to the unit above,Consider basement layout but ignore roof level.

Say, the building has 6 levels including basement; plus one flat concrete roof, Thebuilding has four different structural floor plans,a. Basementb. Ground and First: Same layoutc. Secondd. Third and Fourth: Same layout

Therefore, the building has two repetitions of structural floor plan:The Ground and First, as well as Third and Fourth.

Therefore, percentage of coverage = 216 x 100%= 33.3%

Based on Table 3, the IBS Score for repetitions of floor-to-floor height is 0.

6.6.3. Horizontal repetition of structural floor layout

Mirror image of the structural layout is also considered as being repetitive.Say, the building comprises of 6 units of one-storey dwellings with four differentstructural floor layout:Unit 1

Unit 2 and 3: Mirror of each otherUnit 4Unit 5 and 6: ldentical

Therefore, the structural plan layout of 2 units is repeated,

Therefore, percentage of coverage 100%

Based on Table 3, the IBS Score for horizontal repetitron cf s:.-:.--=

=216x

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7.0 References

1. lndustrialised Building Systems (lBS) Road Map 2003-2010, CIDB Malaysia,2003

2. Guide to Modular Coordination in Buildings, Malaysian Standard MS 1064: Part 1 toPart 10, Dept Of Standards Malaysia, 2003

. 3. Sizing Guide for Precast Concrete Building Components for Residential Buildings, CIDBI n4alaysia 2004

) L Code of Practice on Buildable Design, BCA Singap ore,2004

5. Manualfor IBS Scoring System (lBS Score), CIDB Malaysia, 2005

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