Sunday 13 November 2016


As a group of 12, we performed an Elemental Cost Analysis (ECA) on a 20-storey apartment. It is built on an existing 4-storey car park and is one of the two blocks in the overall development. It has a specialised butterfly roof and a landscape on level 5A.


A) OVERVIEW OF THE BUILDING


These pictures below further explains the details of this building:

Some of the apartment units consist of an outdoor terrace that is directly accessible from the unit itself.

The lift lobby size together with the building services is identical to a typical unit.
Staircases are located at both ends of the building.


Some special type of units include TYPE D as shown here.

Four pieces of butterfly roof structure span on top of the building.




Our building the Block B located on the left. Notice Block A and the multi-storey car park in a separate contract.


B) GROSS FLOOR AREA (GFA) ANALYSIS

We then separated the various Net Floor Areas and calculated the total GFA. The example below is a typical floor plan from 9th floor to 22nd floor:

GROSS FLOOR AREA

USABLE AREA

CIRCULATION AREA

ANCILLARY AREA

C) PRODUCTION OF THE ECA FORMS


Form 1:
Form 2:

Form 3:


The slides below explains step by step on the process of producing these 3 forms from the Contract Documents:

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