chapter 2 ibs integrated building system

8/18/2019 chapter 2 IBS integrated building system

1/34

TECHNOLOGY OF

IBSBFP40603 – INDUSTRIALISED BUILDING SYSTEMS (IBS)


2/34

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


3/34

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.


4/34

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


5/34

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


6/34

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


7/34


8/34

Preparing M&E for precast wall panel


9/34

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.


10/34


11/34


12/34

Video: Ajiya IBS Green (Enduroframe)


13/34

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


14/34

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.


15/34


16/34


17/34


18/34

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.


19/34

FB: IBS Concrete panels Sdn Bhd


20/34


21/34

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


22/34

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)


23/34

Precast concrete fabrication yard

Batching plantOverhead crane

Precast concrete mould &

casting bed


24/34


Skilled worker


25/34



26/34

Storage facility

Blockwork manufacturing

Forklift

QA/QC


27/34

Blockwork manufacturing (automatic)


28/34

Prefabricated steel framing factory


29/34

Prefabricated timber framing factory


30/34

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)


31/34


32/34

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


33/34


34/34

References

• Thanoon et al, THE ESSENTIAL CHARACTERISTICS OF

INDUSTRIALISED BUILDING SYSTEM, International

Conference on Industrialised Building Systems, Kuala

Lumpur, Malaysia, 10-11 September, 2003

chapter 2 ibs integrated building system

Documents