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BSB 602
BUILDABILITY
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Design details are sometimes verydifficult and even impossible to construct.
This could be resulted from design teams
not considering problems which thecontractor has to face on site.
It is also seen as a result of fragmentation between the design andconstruction practitioners
(Moore, 1998).
Introduction
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Buildability can be defined asthe ability to construct a building
efficiently, economically and toagreed quality levels from itsconstituent materials, components
and sub assemblies.
Definition
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Buildability is the share of theresponsibility of all those disciplineswhose constitute the multi-
disciplinary building team includingarchitects, engineers, surveyors,building contractors and sub-contractors, and not the individualresponsibility of the Architect(Griffith, 1994)
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Principle of BuildabilityFunction &
Performance
Buildability Aesthetics Cost
DESIGNER
CONSTRUCTOR
Contract
Agreed Quality
Levels
Buildability Cost
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CONVERSION OF CONSTRUCTION
MATERIALSMATERIALS COMPONENTS
SUBASSEMBLIES
BUILDINGBSB 602
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CONVERSION OF CONSTRUCTION
MATERIALSOFF SITE
ON SITE
CONVERSION
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Function & Performance
Buildability Aesthetics
Cost
CONVERSION TO:MATERIALS (m)
COMPONENTS ( c)
SUB-ASSEMBLIES(sa)
Efficient and economical
assembly due to: Sequences Process, Continuity and Flow, Appropriate use of Labour, Tools, Plant & Equipment, Efficient Organization andManagement
Spatial organization Environmental performance Physical characteristics Strength and stability
Appearances of m/c/sa and of thecomplete building; size, shape, colour,texture, pattern.
Experience of m/c/sa ofthe complete building;
Quality of spatialrelationships, pleasure inuse, relationship tosurroundings
Cost of conversion to m/c/sa, labour, design, transport, handling & assemble Plant, tools and equipment, provision of certain level of
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Standardization Simplicity Single Integrated System
Design Characteristics (3S)
Repetition of grids
Sizes of
Components
Connection ofDetails
UncomplicatedBuildingConstruction
System
Simple installation
Elements that combine
components together
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Structural SteelFrame
PrecastFacade
Precast
SlabPlastic
FormworkBSB 602
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Usage of Components
Employment of Modular Coordination inDimensions
Key Features of Buildability Design
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Standardized Modular Column/Beam sizes
Repeated Structural Grids Vertically Horizontal(60%)
Column/beams grouped & confined to few sizes
Column/beam sitting directly on pile caps
Other Design Consideration
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System toilets
Precast/Preassembled Staircase
Caging/Mesh of Reinforcement
Standard Modules Windows/Door
Other Design Consideration
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PC Column / Beam / Slab PC beam / slab and cast-in-situ column / wall / beam
PC Slab and cat-in-situ column / wall / beam Repetition of components
Repetitive Factor
Consider Horizontal & Vertical Repetition
Precast Concrete (PC) Construction
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Precast concrete panels
Metal Cladding
Traditional Design
Repetition of components.
Wall Components
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Steel Frame, RC Slab on Steel Decking
Steel Frame on composite RC encasement on
wall/beam/column
Steel Frames with structural encasement for
wall/beam/column
Structural Steel System
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Structural Steel System
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Efficient and economical assembly resultingfrom: Sequence
Process
Continuity and Flow
Appropriate use of labour
Appropriate tools, plant and equipment Efficient organization and management
Buildability - Summary
BSB 602
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