Construction Floor Area

Gross floor area gfa calculations in hong kong 95 gross floor area gfa calculations.

Construction floor area. The gross floor. 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 on which the building stands. Construction floor area is the total space in a building including things like exterior walls permanent partitions fire walls and areas in attics and basements. Construction floor area is used to measure and estimate costs related to the construction of a building.

Far is a common zoning issue in building construction that any architect should be familiar with. 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. Essentially gross floor area. 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.

Floor area ratio or far is a critical decisive element for the legal construction of any residential or non residential building. Definition of construction floor area cfa cfa is the area to be used in describing the amount of building works completed. In this article wealthhow tells you how to calculate floor area ratio and equips you with a calculator for the same purpose. It is a tool used by the planning body of any city or town to identify densely constructed areas from the others.

The floor area ratio is just one of the many issues that will affect a new building development or building addition. The floor area within the inside perimeter of the exterior walls of the building under consideration exclusive of vent shafts and courts without deduction for corridors stairways ramps closets the thickness of interior walls columns or other features. This is the sum of all areas at all floor levels including basements mezzanine floors balconies and enclosed rooftop structures measured to the outer face of the external. In prc 97 construction floor area cfa definition 99.

The gross floor area is defined by the 2018 international building code as. Definitions of gfa including which areas are to be counted towards it and which areas aren t vary around the world.