The area of civil air defense projects has the following provisions:
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%;
4 single building projects (underground buildings outside the projection range of the above-ground buildings) should be built according to 30% of its area. If the building has both high-rise and multi-storey, the building should be divided vertically according to the above requirements, and the area index of civil air defense should be calculated by classification.
Extended data:
engineering design
When designing the professional team engineering and personnel shelter engineering of air defense basement, the number of shelter personnel or equipment should be determined according to the "area standard" in Table 3.2. 1-2 of the specification, and it is not allowed to arbitrarily increase the "area standard", resulting in a decrease in the number of shelter personnel or equipment, resulting in a small entrance width, protective equipment and design parameters of wind and water power specialty, which can not meet the actual needs in wartime.
The civil air defense material warehouse project should mainly store grain and materials. The main entrance and exit of the material warehouse with a minimum width of 65438+ a building area of more than 2000m should consider a 0.5m forklift, and the driveway should be clearly defined on the design drawings, and the width of the driveway should meet the traffic requirements.
When designing the main body, the open-air stacking design should be carried out according to the classification of materials. The length of each stacking section should not be greater than 15m, the distance between two stacking areas should not be less than 800mm, the distance between materials and wall should not be less than 700mm, and the distance between materials and beam bottom should not be less than 300 mm.
The size of the stacking area and the types of food and materials stacked in the stacking area shall be clearly specified on the design drawings (the types and specific gravity of food can be determined according to Appendix A and Table A. 1 of Load Code for Building Structures (GB 5009-200): Item 9 "Food" is adopted).
The effective area of diesel power station shall be determined according to the following standards:
The scale of medical rescue project is determined according to the effective area in Table 3.2. 1- 1 of this specification. Ambulance stations are generally designed according to 1 protection unit, emergency centers should be designed according to 2-3 protection units, and central hospitals should be designed according to 4-6 protection units.
Calculation of area
Calculation of building area, effective area and shelter area of air defense basement.
The building area of air defense basement mentioned here refers to the enclosed space area surrounded by the components that directly bear the impact fluctuation load, that is, the enclosed space area formed by the external wall, adjacent wall, door frame wall, sealing wall and protective partition wall of air defense basement.
Air defense underground outdoor passages, shafts, stairs, air ducts, etc. Can not be included in the construction area of air defense basement. The effective area of civil air defense refers to the area that meets the use of personnel and equipment, and the value is the difference between the basement construction area and the structural area. Civil air defense shelter area refers to the effective area of civil air defense for sheltering personnel, materials and vehicles.
Its value is the effective area of civil air defense minus the area of the following parts:
1, area of oral cavity, anti-virus passage and closed passage;
2, ventilation, water supply and drainage, power supply, chemical defense, communications and other professional equipment room area;
3. Toilet, bathroom, boiling water room and other areas.
safety performance
In terms of security, it can be said that it is thoughtful. 50 cm thick reinforced concrete, fully enclosed passage design, complete ventilation duct and civil air defense basement are basically foolproof in case of flood or war.
References:
Baidu encyclopedia-civil air defense basement