How to calculate the pool area of the building?

The calculation method of building pool area is as follows: 1. The calculation formula is as follows: building area = interior building area+pool area = interior building area × pool coefficient = total pool area ÷ total interior building area = interior usable area+interior wall area+balcony area. 2. Calculation content The pool area is mainly composed of elevator shaft and balcony. Each unit is separated from half of the horizontal projection area of the public building space and external walls (including gables). 3. Calculation method The construction area of the whole building is the public construction area of the whole building, excluding the sum of the construction areas of all sets and sets of the whole building, and deducting the construction areas of basements, carports and civil air defense projects that have been sold or rented as independent use space.