Construction Floor Area And Gross Floor Area

4 the gross floor area is divided into the net floor area and the construction floor area.

Construction floor area and gross floor area. The net floor area nfa of the private units in a residential condo building is typically 60 of the gross floor area gfa. For instance if the gross floor area of a building across three floors is 200 sq m and the plot area is 100 sq m far 200 100 2. Construction floor area is used to measure and estimate costs related to the construction of a building. An fsi of two indicates that the total floor area of a building remains two times the gross area of the plot on which it is built.

The floor area ratio is the relationship between the total amount of usable floor area that a building has or has been permitted to have and the total area of the lot. The gross floor. Gross internal area gia the floor area contained within the building measured to the internal face of the external walls. What is floor area ratio.

Secondary structures balconies loggias terraces and building structures are not taken into account. Gross floor area gfa the total floor area contained within the building measured to the external face of the external walls. The usable floor area of a building for the function intended which is based on the gross floor area gfa of the building minus one or more of the sub areas of the building. The floor area of a building or portion thereof not provided with surrounding exterior walls shall be the usable area under the horizontal projection of the roof or floor above.

A building s construction floor area is important for not only controlling costs but also for designing standard fixtures and other physical properties found in most residential and commercial structures. Generally there are 3 major differences in measuring floor area. These include construction.