Effective Floor Area Definition

The following guidelines shall apply when calculating floor area under the building code definition.

Effective floor area definition. The area of sloping surfaces such as staircases galleries raked auditoria and tiered terraces should be taken as their area on plan. Building owners or ahj authorities having jurisdiction usually adopt the definition by one of these agencies. Floor area designing buildings wiki share your construction industry knowledge. Definition of total useful floor area created.

Definitions of gfa including which areas are to be counted towards it and which areas aren t vary around the world. Gross floor area gfa in real estate is the total floor area inside the building envelope including the external walls and excluding the roof. Residential buildings published by the international property measurement standards coalition ipmsc in september 2016 the floor area of a building is. Floor area definitions vary depending on the defining agency.

The total area of all enclosed spaces measured to the internal face of external walls. Adding to this confusion is the practice among some developers to use gross leasable area gla and gfa interchangeably or to use. If the spacing is less than span length 3 one can use the span length 3 which will generate a larger effective area. 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.

According to the international property measurement standards ipms. Architectural projection shall mean any projection not intended for shelter or occupancy and which extends beyond the outer face of an exterior wall of a building but shall not include signs. C c elements the effective wind area is the span length of the element times the spacing to the next element.