Calculation formula of underground building area There is a project in Longling County, Yunnan Province. The known land area is 8 mu, the building density is 40%, the aboveground building area is 6400m2, the plot ratio is 1.2, and the green space rate is 35%. It is a multi-storey 3F. How to calculate the underground building area in the investment estimation?

Calculation formula of underground building area There is a project in Longling County, Yunnan Province. The known land area is 8 mu, the building density is 40%, the aboveground building area is 6400m2, the plot ratio is 1.2, and the green space rate is 35%. It is a multi-storey 3F. How to calculate the underground building area in the investment estimation?

According to the data you provided, the calculation is out of the question, and the estimation is OK
1、 According to the estimation of building density, the building area of one floor is 8 * 666.7 * 40% = 2133 square meters, and the basement area is about one floor
2、 According to the building area estimation: single floor building area = 6400 / 3 = 2133 square meters, basement area is about one floor