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Design Economy - Coggle Diagram
Design Economy
a) DESIGN FACTOR
Building Plan Shape
Building Circulation Area
Building Grouping
Building Storey Height
Building Size
Building Total Height
Factor affecting cost of a building
Building Circulation Area
to reduce the amount of circulation area to an acceptable amount
The GFA of a building must be close as possible to the usable space of a building
Building Storey Height
accommodate large machinery or equipment
prestige reason such as hotel foyers
Function of building such as church, sport hall,theatres
Avoid discomfort (If storey height is too low)
Building Plan Shape
construction
maintenance
structure
management
environment
Building Grouping
Saving in foundation
Saving in external wall
combined of party walls of
a building
Building Total Height
land is limited
land is expensive
Building Size
Increase in quantity of material
The lower the ratio of wall to floor area, the
more economical the building
Increase in time of completion
Increase in use of electricity
Introduction
to get the best value for money for the
client.
does not necessarily the lowest but one that is economical
Value for money + Fulfils design + Fulfils function
factor affecting building cost
Client’s needs
Building requirements
Planning requirements
Market condition
Construction technique
Condition of site
Location of site
Site conditions
b) SITE FACTOR
Construction Method
Procurement Method
Local Authorities’ Requirements
Cost Implication Of Site Variables
Procurement Method
Design and build
Management
contracting
Traditional contract
Construction
management
Local Authorities’ Requirements
A fee is paid upon the submission of the plans.
Construction Method
Finishes
Window
Walls
Roof
Upper Floor
Frame
Substructure
Economics of Site In Relation To Design Economics
Size of site
The limited size of land will limit the size of building to be built
Shape of site
The shape of land will influence the design of building to be built
Location of site
The area of construction site and the availability of utilities