ELEMENTAL COST

ANALYSIS (ECA)

ELEMENTAL COST

ANALYSIS (ECA)

What successful Cost Estimators know….and What successful Cost Estimators know….and you should, too.you should, too.

Prepared by:Prepared by:Assoc. Prof. Sr Dr. Mastura JaafarAssoc. Prof. Sr Dr. Mastura Jaafar

Prepared by:Prepared by:Assoc. Prof. Sr Dr. Mastura JaafarAssoc. 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

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

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.

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.

PROCEDURE

Type of buildingType of buildingFORM 1FORM 1

FORM 2FORM 2