Formula For Floor Area Ratio

The terms can also refer to limits imposed on such a ratio through zoning.

Formula for floor area ratio. Floor space index fsi is also known as floor area ratio far or floor space ratio fsr. Divide the total square footage of the building s stories by the square footage of the site to calculate floor area ratio. Gross floor area is the sum of the floor area of each story.

Local governments use the floor area ratio for zoning codes. Floor area ratio t o t a l b u i l d i n g f l o o r a r e a g r o s s l o t a r e a. Floor space ratio varies for different types of buildings.

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. The ratio is obtained by dividing the total area built by the area of parcel of land upon which it is built. Floor area ratio far g b.

The floor area ratio is the ratio between the total amount of usable floor area that. Gross floor area g floor area of 1st story floor area of 2nd story for all floors above the ground step 4. In the example 17 000 square feet divided by 10 000 square feet equals a ratio of 1 7.

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. As a formula far gross floor area area of the plot. The constructed area would include the basic structure exterior walls staircases or lobby space if any.

The result is the floor area ratio far. The floor area ratio is useful to local governments in showing the density of a property or area for zoning decisions. Divide the gross floor area by the buildable land area.