Wall To Floor Ratio Calculation

As a formula far gross floor area area of the plot.

Wall to floor ratio calculation.

Floor area ratio or far is a critical decisive element for the legal construction of any residential or non residential building. What is wall to floor ratio. The wall to floor ratio of a building is calculated by dividing the external wall area by the gross internal floor area. The floor area ratio accounts for the entire floor area of a building not simply the building s footprint.

Gross floor area of all floors of the building area of the building lot far a higher ratio indicates a higher density environment. A reasonable ratio on central london offices is considered to be in the order of 0 40 with 0 35 and below being regarded as very efficient and significant. The smaller the ratio the more floorspace is created which in financial terms for a client would be rentable areas building aplan area 35m x 35mheight 35mstorey height 3 5mbuilding bplan area 22 5m. This indicates the proportion of external wall required to enclose a given floor area.

Excluded from the square footage calculation are unoccupied areas such as basements. Wall to floor ratiosthe following activity asks you to look at the wall to floor ratios and form afinancial comparison between two designs. It is a tool used by the planning body of any city or town to identify densely constructed areas from the others. Floor area ratio far is the ratio of a building s total floor area gross floor area to the size of the piece of land upon which it is built.

The floor area ratio far also known as the plot ratio is a measure of the total permitted floor area of a building in relation to the total area of the lot or plot on which the building stands.