mffi Lembaga Pembangunan lndustri Pembinaan Malaysia CONSTRUCTION INDUSTRY DEVELOPMENT BOARD MALAYSIA lbu Pejabat CIDB, Tingkat 7, Grand Seasons Avenue, No 72, Jalan Pahang 53000 Kuala Lumpur P.O Box. 12278, 50772 Kuala Lumpur. Tel: 603-26170200 Fax: 603-40451808 mm http://M.cidb.gov.my GTIIE MALAYSIA STANDARD INDUSTRI PEMBINAAN (CONSTRUCTION INDUSTRY STANDARD) cls 18" 2010 MANUAL FOR IBS CONTENT scoRrNG SYSTEM (!BS SCORE) April 201 0 O Copyright LEMBAGA PEMBANGUNAN INDUSTRI PEMBINAAN MALAYSIA
slP,H@ IBS CENTRE 1"t Floor, Block E, Lot 8, Jalan Chan Sow Lin, 55200 Kuala Lumpur Tel :603-9281 6909 Fax :603-9281 5870 www.ibscentre.com.my Perpustakaan Negara Malaysia Cataloguing-in-Publication Data First Edition 2005 Second Edition 2007 Third Edition 2010 Bibliography : p.30 tsBN 978-967 -5317 -20-0 1. 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-s 4.4 IBS Score for Project with Group of Buildings 6.0 CONSTRUCTION AREAS AND WALL LENGTHS 6.1 How to Calculate Construction Area........... 'a 6.2 How to Calculate Wall Length 6.3 How to Calculate IBS Score for Part 1: Structural Systers and Part 2: Wall Systems 6.4 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 6.5 6.6
FOREWORD The goverment has put a lot of emphasis to move away from labor intensive activities toward technology intensive activities. This is part of the initiatives to achieve the objectives of producing and delivering high quality product, value for money and to stay competitive. Over the years, CIDB has taken many initiatives to industrialise the Malaysian construction industry by promoting the use of lndustrialised Building System (lBS). As an initial step towards open industrialisation, CIDB also promotes the use of standardised building components and off-site construction. The IBS Content Scoring System (lBS Score) is systematic and structured assessment system that can be used to measure the usage of IBS in a cosistent way. lt is intended to be a guide for those who are interested in measuring the content of IBS in any buildinng project. The IBS Score can be used, for any purpose, be it for satisfying the regulatory requirement and also for satisfying the requirement of any incentives program. I hope this guide will become an important initil effort towards achieving open industrialisation of the construction industry. Datuk Ir Hamzah Hasan Chief Executive CIDB 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 Simplified Construction 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=- - j building 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:n activities. As a consequence, this has attracted huge number of foreign workers inb tis co.rtry to 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- E ages, social problems, diseases, etc. As such, some form of government intervention is highly needed. lndustialbatbn cf tE construction industry is seen as the only feasible way forward. The govemment ha H qt a comprehensive national lndustrialised Building System (lBS) Road Map for the smtutrr industry players to adopt in the industrialisation programme of the construAion hdsfyEssentially, the Road Map evolves on the policy of phased reduction of dependency m fuei7t labour and encouragement policy on the investment in technologies, techniques and processes of construction. lt lays out definite action plans which when successfully implemented sH ensure a successful upgrading of our construction industry. As a push for more utilisation of lBS, a number of encouragement and regulatory requirements have been put forward. An example of such regulatory regulatory requirements is the implementation of minimum IBS Score in government building projects. To standardize the method of measurement of IBS Score, CIDB published the Manual for IBS Content Scoring System in 2005. The manual has provided a systematic and structured assessment system that can be used to measure the usage of IBS in a consistent way. Since its introduction, CIDB received a lot of suggestions for enhancements and improvements to existing manual. Taking into account the introduction of new technologies, new policies and environment, CIDB after consultations and input from the construction industry, publishes this edition 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 IBS Score. lt sets out the IBS Score formula, the IBS Factor for each of the elements used in the building, methods of calculating the IBS Score, explanatory notes as well as sample calculations. lt is also intended to provide guidance for every professional to evaluate the IBS Score 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. fusfurptid completion 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- TIE presence of high repetitiveness in the design as well as other simplified constnrctbr sd.futs shall also contribute to the total score. The points are summed-up to gi\,e tE IBS Scre d a building. IBS score for the whole project development that consists of a grutp d hifirgF b aho provided. 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 following components: a) Part I -Structural Systems (Maximum score is 50 points) Points are awarded for various types of structural system used e.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 used e.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 *l + 20>.1*F.) +s Qt Where: I Qs Qst Fg Qw Qwr Erw 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 system used; 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 percentage construction area covered by the systern and the corresponding IBS Factor from Table 1. ln order to arrive at the IBS Score, it is multiplied by the score of 50 points. For simplicity, the dimensions for the calculation of construction areas may be read 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 the building line underneath it. As such, the construction area for roof is sirnilar to construction area of beam/column underneath it. Refer examples in Sedirn 6- For elements that are not horizontal, e.g. roof, staircase and all ofrrer doped surfaces; plan areas shall be used for the calculation. IBS Score calculation includes superstructure elements of a bulflrg trrtySub-structure works, driveway, apron and landscape areas re nd Hen ifu account in the calculation. Table 1 provides the IBS Factors for combinations of otrrrrrn lffi ild column/beam systems that are used while Table 1A, irdh# Fs, fu wilr types of roof system. For a particular structural sy:stem thd ae rd orrufy used and not mention in Table 1, the Fs can be obtained frorn BS Cerfe, CfBFor building that uses multi-structural systems, tte mfttt*n ddr ffi is calculated and totalled up to arrive at ihe tohl IBS ScEebtEcmffit of the structural systems. a) b) c) d) e) 0 s)
ul F <t) U) Precast concrete slab{1) ln-situ concrete on permanent metal formwork ln-situ concrete using reusable(3) system formwork No Floor{8) UJF [J u z o Precast column and beam 1.0 0.9 0.7 0.6 1.0 1.0 1.0 Precast column and insitu beams usino reusabld3)systef,r formwork 0.9 0.8 0.6 0.5 0.9 0.9 0.8 Precast column and insitu beams using timbela) formwork 0.8 0.7 0.5 04 0.8 0.8 0.7 Precast beams and insitu columns with reusabld3) system formwork 0.9 0.8 0.6 0.5 0.9 0.9 0.8 Precast beams and insitu columns using timber(a) formwork 0.8 0.7 0.5 0.4 0.8 0.8 0.7 ln-situ column and beams using reusable(3 system formwork 0.7 0.6 n< 0.3 0.7 0.7 0.6 ln-situ column and beams using timbelal formwork 0.6 0.5 U,J 0.0 0.6 0.6 0.0 S Y ^e8 <ns efr5m9 Vertical and horizontal member systems / structure 0.8 0.7 0.6 0.5 0.8 0"8 0.7 ) LlJ L! F U) Steel columns and beams 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,thefactorcanbedeterminedfromthetableby treating 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-situ concrete using limIs1(+) formwork Steel flooring system Timber frame flooring system 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 a used 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 calculated and 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 particular uncommon wall system not mention in Table 2, the factor can be obtained from IBS Centre, 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 used repeatedly. 6. Timber formwork means the timber components are sized, cut and fabricated in-situ to form the formworks and the required 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 ','S be 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<75oh ii) 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. Values to 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 UNII PERCENTAGE OF USAGE 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 be calculated 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 considered when computing the area covered by respecttve systems, c) Minor structures, e.g. guardhouse. thrash bin and others should be excluded from the calculation provided that they are not within or structurally linked to the main building H] \ l o I i
5.0 IBS Score Calculation Examples ln this section a number of examples are given to illustrate the calculation methods for determining the 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 m2 Construction area 1"t floor = 117.0 m2 Construction 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 beams ln-situ concrete using steel formworks Precast half slabs floor Prefabricated timber roof truss. Precast concrete panel Precast block works i) ii) iii) i) ii) 10 master bedroom
4) Other simplified construction solutions i) 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 10:200'1 Lessthan 50% complieswith MS 10M Part 10:2001 B0% complies with MS 1064 Part 4:2001 0% complies with MS 1064 Part 5 : 2001 From the information given the calculation can be tabulated as follows Precast beams + in- situ column with reusable formwel( + precast concrete half slab floor. Ground floor area = 117.0m 2 117.0 m2 Precast beams + in-situ column with reusable formwork (no floor) 1"t floor area = 117.om2 117 .O m2 Roof truss using prefab roof truss Roof area = 117.Om2 117.a m2 External wall using concrete blockworks lnternal wall using precast concrete panel i) 60% beam sizes follow MS '1064 Part 10:2001 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) or Length (m) rBs COVERAGE tBs rA9 I rJt( SCORE 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 construction solutions ii)80% of door sizes follow MS 1064 Part 4:2001 11
5.2 EXAMPLE 2: 18 storey condominium. Typical layout floor plan for one floor is as shown. Floor Plan 1) Construction Area per floor i) ii) iii) 2) 3) Structural Systems Area for 1 unit of condominium Lift lobby area Area for 1 floor = 194.4 x 6 units + 140I 94.4 mz 140 mz 706.4 mz : prefab steel roof truss. i) ii) i) ii) Tunnelformwork system Roof 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 : 2001 Windows : 100% comply to MS 1064 Part 5 :2001 Repetition of floor to floor height = i) ii) Vertical repetition of structural floor layout 90% 81Yo i) Tunnel formwork system Total area = 706.4m' x 18 storey = 12,715m'? ii) Roof truss - prefab steel Roof area = 706.4m2 i) Blockworks wall Total length = 263m x 18 ii) External wall: tunnel formwork Total 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 structure floor layout = B0% IBS GONTENTS SCORE OF PROJECT 1Paft 1 + Part 2 + Part 3) 13 ELEMENTS AREA (m'z) or Length (m) FACTOR COVERAGE IBS SCORE Part 1: Structure Elements 12,715 m'? 0-6 | 12,715t13,121 I <)"S5 , _ ::. _: :_ =-: : 706.1 rr: Total Part 1 13.421 .4 1r, Part 2: Wall System Total Part 2 o 5:- Part 3: Other simplified construction solutions 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 3,000 3000 / 15400 = 0.195 83 0.195 x 83 = '16 2 B 3,000 3000 / 15400 = 0.195 87 0.195 x 87 = '- - c 3,200 3200 I 15400 = 0.21 35 D 3,200 3200 I 15400 = 0.21 47 E 3,000 3000 / 15400 = 0.195 75 Total 15,400 1.0 65,1 15 Block Construction Area (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 10 60 m2 6x10 60 m2 6.2 16 \/ X /\
10m Wall Length i) Externalwall ii) lnternalwall 10m ', l-:: oo17
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 slab beam wall column ldentify beam ldentify column ldentify 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 First Floor .- 'n-shape" 4 l As an example, For Ground Level: Consider types of structure used for 1st Level Beams, Ground to 1st Level Columns, 1st Level 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. Level Walls. lf the top has roof trusses instead of the roof slabs (no floor), calculations for roof system need to be done. For a 1-storey building without roof slab 18 CelelS lloor Ground Floor I
From Table 14, the IBS Factor is 1.0 Calculate the area covered by the beams/columns Calculate the area covered by the roof Totalarea IBS Score (columns beams) IBS Score (roof) Totat IBS Score for Part 1: Structural Systems =25 ldentify wall system ; say common brickwall From 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 -ZJ -aE =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:-'::: .: :-= =.a1 A 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, slabs doors 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 numbers 250mm x 250mm: 10 numbers 375mm x 375mm:30 numbers Between these three types, the sizes that are in MS 1064: Part 10:2001 Section 3 are 200mm 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 of width(thickness) : 100mm:60 m run 130mm:40 m run Between these two types, the size that is specified in MS 10M Part 10: 2001 Section 3 is 100mm. 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 = 2900mm Ground Floor to 1st floor = 29M = 2900mm 1st Floor to 2nd Floor = 30.5M = 3050mm 2nd floor to 3rd Floor = 30.5M = 3050mm 3rd floor to 4th Floor = 30M = 3000mm 4th 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. 20
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, The building has four different structural floor plans, a. Basement b. Ground and First: Same layout c. Second d. 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 different structural floor layout: Unit 1 Unit 2 and 3: Mirror of each other Unit 4 Unit 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 21
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 to Part 10, Dept Of Standards Malaysia, 2003 . 3. Sizing Guide for Precast Concrete Building Components for Residential Buildings, CIDB I n4alaysia 2004 ) L Code of Practice on Buildable Design, BCA Singap ore,2004 5. Manualfor IBS Scoring System (lBS Score), CIDB Malaysia, 2005 22