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I SSCOREMd Nasir Bin Md SafarJKA, POLITEKNIK SULTAN ABDUL HALIM
MUADZAM SHAH.
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DEFINITION
A structured and
systematically evaluation
systemsUsed to measure the content
usage of IBS components in
a building
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PRINCIPLE OF IBS SCORE
The use of prefabricated and precast concrete
components
Off-site production of components
The use of standardized components
Repeatability
Design using MC concept
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HIGHERIBS SCOREREFLECT:
Clean environment
Quality
safe
Faster completion
workers on site
Wastage
Site materials
Total cost
100
70
50
30
Total IBS Score (%)
= +
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5
Modular MS 1064
PART 3 : OTHER SIMPLIFIED CONSTRUCTION
Repetitiveness
PART 1 : STRUCTURAL SYSTEMtrusses
ColumnSlab
PART 2 : WALL SYSTEM
Internal wall
External wall
IBS CONTENT SCORING SYSTEM (IBS SCORE)
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IBS CONTENT SCORING SYSTEM (IBS SCORE)
MAX IBS Score for a building is = 100 pointsThe IBS Score is made up of the following components :
Part 1: Structural System, Max= 50 points
Part 2: Wall System, Max= 20 points
Part 3: Other Simplified Construction
Solutions, Max= 30 points
+IBS SKOR 2010 50p + =20p 30p 100p
Part 1 Part 2 Part 3
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7
STRUCTURAL SYSTEM WALL SYSTEM
OTHER SIMPLIFIED
CONSTRUCTION
SOLUTIONS
Formula IBS Score
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CALCULATION PRINSIP1. Structural system
Sub-structure works (elements) are not taken into account in the calculation
e.g. Piling, ground beam, ground slab, underground car park etc)
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Table 1: IBS Factor: Structural System
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Table 1A: IBS Factor: Roof System
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Beam : precast beam
Column : insitu column with reusable
formwork
Slab :precast concrete half floor slab
Ground floor
First floor
Roof
Beam : precast beam
Column : insitu column with reusable
formwork
No floor :
Roof : Roof truss using prefab roof truss
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STRUCTURALSYSTEM :NOTES TABLE 1)1.Precast concrete slabs include half slab, hollow core slab and
precast prestressed plank.
2. Reusable formworks include plastics, fiberglass, Steel,aluminium and other metal formworks that can be used notless than 20 cycles
3. Timber formwork (timber roof trusses) means the timbercomponents are sized, cut and fabricated in-situ to form theformworks and the required temporary works.
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5. The factor for tunnel formwork system is 0.6
8. For other structural systems not mentioned in the table
please refer to IBS Centre, CIDBfor the factor.
6. Load-bearing blockwork include interlocking block, concrete
mansory unit, hollow and lightweight block
7. This is structures without floor.
STRUCTURALSYSTEM:NOTES TABLE1)
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EXERCISE1
Question
What is the IBS Factor for the following Structural components?
(Refer Table 1 & 1A)
1. Ground Floor
i) Precast Concrete beamii) Column with timber formwork
iii) All slab pre-stress plank except toilet area insitu
2. Roofi) Prefab roof truss.
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EXERCISE1Question
What is the IBS Factorfor the following Structural components?
(Refer Table 1 & 1A)
1. Ground Floor
i) Precast Concrete beamii) Column with timber formwork = 0.8
iii) All slab pre-stress plank except toilet area insitu
2. Roofi) Prefab roof truss = 1.0
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2. Wall system- Points are awarded based on the wall system
used
- Allocation based on the % of the length of thewall system used
Point =
Qw Length of wall system is used
Qst Total wall length of the building
Fw from Table 2
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Table 2: IBS Factor: Wall System
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1. Precast concrete panels include sandwich panel, solidpanel, hollow core panel and bay-window.
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 highest or
the widest materials.
4. Pre-assemble brickwall/blockwall means brick that being
laid in form of a panel and transported to site.
5. Wall constructed using tunnel formworks, use Factor 0.6
WALL SYSTEM: NOTES (TABLE 2)
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- Points are awarded based on the utilisation ofconstruction methods or solutions that cancontribute to the objectives of IBS.
Point = 30%S
3. Other Simplified Construction
- Use of standardised components; MS1064
(Beams, columns, walls, slab, windows, door)- Repeating features Vertical repetitions, horizontal
repetition
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TABLE 3 : IBS SCORE FOR OTHER SIMPLIFIED CONSTCRUTION SOLUTIONS
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OTHERSIMPLIFIEDCONSTRUCTION: NOTES(TABLE3)
1. Refer to MS 1064: Pt 4: 2001 ( Coordinating sizes andPreferred sizes for doorsets.
2. Refer to MS 1064: Pt 5: 2001 (Coordinating sizes andPreferred sizes for window sets.
3. Refer to MS 1064:Pt 10: 2001 ( Coordinating sizes andPreferred sizes for reinforced concrete components.
4. For structure using load bearing wall system, 8 marks isgiven automatically
5. For non-concrete beams columns and slabs, 4 marks isgiven automatically for each component
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EXAMPLE
IBS Score Calculation
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Double Storey TerraceHouse
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Say, from measurement taken from drawings:
1) Construction area
i) Construction area ground floor = 117.0 m2ii) Construction area 1st floor = 117.0 m2iii) Construction roof area = 117.0 m2Total construction area = 351.0 m2
2)Structural Systems
i) Beams: Precast concrete beamsii) Columns : In-situ concrete using steel formworksiii) Floor slab: Precast half slabs flooriv) Roof truss: Prefabricated timber roof truss.
3) Wall Systemi) Internal wall: Precast concrete panelii) External wall: Precast blockworks
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Other simplified construction solutions
i) Beams: 60% complies to MS 1064
Columns: 100% complies to MS 1064
Walls and slabs: Less than 50% complies to MS 1064
Doors : 80% complies to MS 1064
Windows: 0% complies to MS 1064
ii) Horizontal repetition of structure = 100%
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75.6IBS CONTENTS SCORE OF PROJECT (Part 1 + Part 2 + Part 3)
16Total Part 3
6100%iv) Horizontal repetition of structure = 100%
480%iii) 80% of door sizing follow MS 1064 Part 4: 2001
4100%ii) 100% of column sizing follow MS 1064 Part 10:
2001
260%i) 60% beam sizes follow MS 1064 Part 10: 2001
Part 3: Other simplified construction solutions
14.81.00167.3mTotal Part 2
0.48 x 1.0 x 20
=9.6
(79.5/167)
=0.481.0079.5mInternal wall using precast concrete panel
0.52 x 0.5 x 20
=5.2
(87.8/167)
=0.520.587.8mExternal wall using precast concrete blockworks
Part 2: Wall System
44.61.00351.0 m2Total Part 1
0.33 x 1.0 x 50
=16.5
(117/351)
=0.331.0117.0m2
Roof truss using prefab roof truss
Roof area = 117.0m2
0.33 x 0.8 x 50
=13.2
(117 / 351)
=0.330.8117.0 m2
Precast beams + in-situ column with reusable
formwork (no floor)
1stfloor area = 117.0m2
0.33 x 0.9 x 50
=14.9
(117 / 351)
=0.330.9117.0m2
Precast beams + in-situ column with reusable
formwork + precast concrete half slab floor.Ground floor area = 117.0m2
Part 1: Structure Elements
IBS
SCORECOVERAGE
IBS
FACTOR
AREA (m2) or
Length (m)ELEMENTS
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THANKYOU