Extended data:
New civil buildings shall be calculated according to Articles 1 and Article 2 of these Measures: when the area of civil air defense projects to be built is greater than 10% of the total floor area of the project (the project cannot be divided into blocks), civil air defense projects of Grade VI and above can be built at a rate of not less than 10% of the total floor area; Except for newly-built single civil construction projects.
All buildings are classified according to architectural forms, and the index calculation has nothing to do with the use function. Calculation method:
1, 10 floors or above (including 10 floors) should be built with "whole house" air defense basement, which can be calculated according to the standard area index of ten floors;
2, ten floors (excluding ten floors) below, the foundation buried more than 3 meters (including 3 meters) of the building, should be built according to its area (including underground) 3%;
3, ten floors (excluding ten floors) below, the foundation buried depth is not more than 3 meters, should be built according to its area (including underground) 2%.
According to the architectural form
Civil air defense engineering can be divided into tunnel engineering, tunnel engineering, accumulation engineering and excavation engineering according to the construction form.
Tunnel engineering: Tunnel engineering is an underground excavation engineering with the main ground mostly below the lowest entrance and exit, which is mostly built on the flat ground.
Tunnel engineering: Tunnel engineering is an underground excavation engineering in which the main ground is mostly higher than the lowest entrance and exit, and it is mostly built in mountainous areas or hilly areas.
Stacking engineering: Stacking engineering refers to the engineering in which most structures are above the original surface and covered with backfill soil.