Floor Area Ratio Formula

Building s total covered area is the gross floor area.

Floor area ratio formula. So by definition floor area ratio far is the ratio of building s total covered area to the size of the plot on which it is built. Floor area ratio far is the measurement of a building s floor area in relation to the size of the lot parcel that the building is located on. As a formula far gross floor area area of the plot. Far total covered area all floors area of plot.

The floor area ratio is calculated by taking the square footage of a building and dividing it by the square footage of the property that the building sits on. Floor area ratio total covered area on all floors of all buildings on a certain plot area of the plot. To calculate the maximum floor area ratio multiply the allowed far by the lot square footage. The terms can also refer to limits imposed on such a ratio through zoning.

In the example 17 000 square feet divided by 10 000 square feet equals a ratio of 1 7. Far limit 1 0 lot size. Floor area ratio total building floor area gross lot area begin aligned text floor area ratio frac text total building floor area text gross lot area end aligned floor. With the result being the maximum floor area allowed for a building on the lot.

The total gross floor area square feet of all floors of the building shall not exceed this amount. 20 000 square feet 1 0 x 20 000 20 000 square feet maximum building size. Far is expressed as a decimal number and is derived by dividing the total area of the building by the total area of the parcel building area lot area. Floor area ratios fars calculation.

Floor area ratio is the ratio of a building s total floor area to the size of the piece of land upon which it is built. It is often used as one of the regulations in city planning along with the building to land ratio. Floor area ratio far is a mathematical formula that determines how many square feet can be developed on a property in proportion to the lot area. Divide the total square footage of the building s stories by the square footage of the site to calculate floor area ratio.