Measuring Internal Floor Area

Gross internal area is the area of a building measured to the internal face of the perimeter walls at each floor level fairly straight forward but lets start with defining what the internal face is.

Measuring internal floor area. Use this calculator to work out the floor area of a room if you re room is rectangular then simply enter the width and depth of the room and the unit of measure and the resulting floor area of the room will be calculated in several different units of measure both metric and imperial useful if you are meauring the room in one unit but for example the. Works undertaken but use a hand held laser measuring device or some technically advanced surveying equipment when measuring the net internal area of office space in a building in the city of london. Rics code of measuring practice 6th edition. Areas occupied by internal walls and partitions.

Net internal area nia is the area taken to the inside face of the external walls of a building but excluding the area of internal walls and other non usable spaces. It is very important when describing the area of a building to be clear about which measure is being used for example in planning applications building regulation applications property sales lease negotiations rating valuations and so on. Columns piers chimney breasts and other internal projections. The ways of defining floor area depend on what factors of the building should or should not be included such as external walls internal walls corridors lift shafts stairs etc.

In the first case dependent upon circumstances an accuracy requirement of say 10 of the total area may be acceptable whereas in the. Areas occupied by internal walls and partitions. Columns piers chimney breasts stairwells lift wells other internal projections vertical ducts and the like. Offices and shops are.

Calculating the floor area of a room. Gross internal floor area is the area of a building measured to the internal face of the perimeter walls at each floor level which includes. Gross internal area gia or gross internal floor area. Net internal area nia.

But where there are floor to ceiling windows i have taken the area to the back of the. You need to find the gross internal floor area gifa of your flat that is the area measured to the internal face of the perimeter walls of the flat. For residential and office buildings. Gross internal floor area.

You can measure either in feet or metres.