chapter 2 ibs integrated building system
TRANSCRIPT
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TECHNOLOGY OF
IBSBFP40603 – INDUSTRIALISED BUILDING SYSTEMS (IBS)
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CONTENT
• Types of IBS
•Precast Concrete Framing, Panel and BoxSystem
•Formwork Systems
•Prefabricated Steel Framing Systems
•Prefabricated Timber Framing Systems
•Blockwork Systems
• Innovative
• Facilities and infrastructures
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Learning outcome:
• Identify and understand the components type of IBS such as
Precast Concrete Framing, Panel and Box system; Formwork
System, Steel Framing System; Prefabricated TimberFraming System; Blockwork System and Innovative.
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INTRODUCTION
• Earliest classifications of IBS were a) frame or post andbeam system; b) panel system; and c) box system (Junid,
1986).
Column and beam - main
structure member (support
all the building weight)
Walls - light and easy
to install
Concrete panels - flooring
Loads are distributed through largefloor and wall panels where walls
support the building weight.
Applicable to buildings which require
large number of walls-apartment
house, hotel and hospital.
Not suitable to buildings with large
spans or many stories
Three-dimensional modules
or boxes for fabrication of
habitable units that are
capable of withstanding load
from various directions due to
their internal stability
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INTRODUCTION
• Classification of IBS developed by the CIDB:
IBS Types
Precast concrete
framing, panel
and box system
Formwork
systemBlockwork
system
Prefabricated
steel framing
system
Prefabricated
timber framing
system
Innovative
product system
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1) Precast concrete
framing, panel and box
systemThe most common group of IBS
products is the pre-cast concrete
elements, such as, pre-cast
concrete column, beams, slabs,
walls, “3-D” components(examples, balconies, staircases,
toilets, lift chamber, refuse
chambers), lightweight pre-cast
concrete, as well as permanentconcrete formwork
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Preparing M&E for precast wall panel
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2) Formwork system
• Considered as one of the “low-level” or the “least
prefabricated” IBS, as they generally involve site casting
• High quality finishes, fast construction with less site labour and
material requirement.
• These include tunnel forms, tilt-up systems, beams and
columns moulding forms, and permanent steel formwork
(metal decks).
• Onsite fabrication - the walls and complete building are cast
on-site, using specially designed and reusable formwork
moulds.
• The formwork may be made from plastic, steel etc.
• The claim to prefabrication lies in the manufacture of the
moulds, into which the concrete is poured.
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Video: Ajiya IBS Green (Enduroframe)
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4) Prefabricated timber
framing system
Products - timber building
frames and timber roof trusses.While the latter are more
popular, timber building frame
systems also have its own niche
market: offering interestingdesign from simple dwelling
units to buildings requiring high
aesthetical values such as
chalets for resorts
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5) Blockwork system
• Interlocking concrete
masonry units (CMU) and
lightweight concrete blocks.
• Simplify the traditional
brick-laying tasks
• Usually, the block is
designed as a load bearingwall system, in which the
bricklaying work does not
require mortar (dry system),
and the component caneasily be installed like a
‘Lego’ system.
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6) Innovative
This category refers to the various pre-fabricated materials that
have entered the market, which include gypsum, wood wool,polymer, fibreglass, glass and aluminium-based IBS components.
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FB: IBS Concrete panels Sdn Bhd
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IBS FACILITIES AND INFRASTUCTURE
1) Producing the components within controlled environment whether offsite or on-site;
2)Delivery of component to the construction site or workplace; and
3) Installation of components and ancillary site works.
Typical Industrialised Building System (IBS) Construction Process (Adapted from Hamid, 2010)
Production
facility
Transportation
Equipment
at site
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1) Production facility
• Plant -
• Equipment
• Skilled worker
• Management resources
>> initial capital investment is relatively expensive - such huge
investment can only be breakeven if there is sufficiently high
demand for the products. On the other hand, a temporary
casting yard or factory can be established at the project site in
order to minimized the transportation costs (Peng, 1986)
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Precast concrete fabrication yard
Batching plantOverhead crane
Precast concrete mould &
casting bed
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Precast concrete fabrication yard
Skilled worker
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Precast concrete fabrication yard
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Storage facility
Blockwork manufacturing
Forklift
QA/QC
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Blockwork manufacturing (automatic)
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Prefabricated steel framing factory
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Prefabricated timber framing factory
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2) Transportation
• Large truck, lorry
• It is found that casting a large panel system can reduce
labour cost up to 30 percent. However, these cost savings
are partly offset by the transportation costs. Thetransportation of large panels is also subject to the road
department and relevant authorities (Peng, 1986)
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3) Equipment at site
• For the purpose of erecting and assembling pre-cast panel
into their position, heavy crane is required especially for
multi-story building.
•Crane, other equipment and tool
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References
• Thanoon et al, THE ESSENTIAL CHARACTERISTICS OF
INDUSTRIALISED BUILDING SYSTEM, International
Conference on Industrialised Building Systems, Kuala
Lumpur, Malaysia, 10-11 September, 2003