What successful Cost Estimators know and you should

As a systematic breakdown of the cost of a building to a Client into

To enable the Design Team to determine how much had been spent on each

Brief specification in the ECA describes the type and quality of materials to be

Basic elements Element of Quantity Substructure Area of lowest floor finish measured as for

Basic elements Element of Quantity Windows and External Doors Total area of windows and

To be able to carry out elemental estimating based on historic data. This data

PROCEDURE Form 1 Calculating Gross Floor Area (GFA) and Total Cost of Element –

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What successful Cost Estimators know…. and you should, too. ELEMENTAL COST ANALYSIS (ECA) Prepared by: Assoc. Prof. Sr Dr. Mastura Jaafar

As a systematic breakdown of the cost of a building to a Client into various building/construction elements in terms which are meaningful to both Client and the members of the Design Team. (ISM)

To enable the Design Team to determine how much had been spent on each building element. To assess whether a balanced distribution of costs have been achieved amongst the various elements of the building. To provide comparison of costs of the same elements that may be used in different buildings. To obtain cost data for use in the cost planning for other projects.

Brief specification in the ECA describes the type and quality of materials to be used in project. Usually consists of 6 elements: substructure, superstructure, finishes, fittings and furnishings, services and external works

Basic elements Element of Quantity Substructure Area of lowest floor finish measured as for GFA Frame Area of floors relating to frame measured as for GFA Upper Floors Total area of Upper Floors Roof Area of measured overall surfaces External Walls Area of external walls measured an outer face (excluding openings)

Basic elements Element of Quantity Windows and External Doors Total area of windows and external doors measured over frame Internal Walls and Partitions Total area of internal walls and partitions (excluding openings) Internal Doors Area of internal doors measured over frame Wall Finishes Total area of wall finishes Floor Finishes Total area of floor finishes Ceiling Finishes Total area of ceiling finishes

To be able to carry out elemental estimating based on historic data. This data is then manipulated to suit the requirements of the current project under consideration. A good cost planning will store its data in the appropriate form for later retrieval. This usually takes the form of elemental cost analysis.

PROCEDURE Form 1 Calculating Gross Floor Area (GFA) and Total Cost of Element – Form 2 Up date specifications – Form 3 The Cost Estimate for the new project is ready.

Type of building FORM 1

FORM 2