There is no requirement in the building that the canteen cannot be built in the basement, but there are restrictions on the smoke exhaust of the basement canteen in the HVAC code. Because there are no doors and windows in the basement canteen, the requirements for lighting and ventilation are strict. In case of fire, the layout design of the room must meet the requirements of fire prevention and smoke exhaust in the basement.
Therefore, if firefighters prohibit the construction of canteens in the basement, the main reason is that canteens do not meet the requirements of Code for Fire Prevention and Smoke Exhaust in Architectural Design. Including the specific requirements for window opening area, lighting area, natural ventilation, mechanical smoke control and so on.
Extended data:
According to GB50028-20 18 Code for Design of Town Gas 10.2.2 1, when laying gas pipelines in basement, semi-basement, equipment floor and enclosed room, the following requirements should be met: good ventilation facilities, and the number of air changes in the room should not be less than 3 times/h; There should be independent mechanical ventilation facilities for accidents, and the air exchange rate should be no less than 6 times/h.
10.5.3 stipulates that when commercial gas equipment is installed in basement, semi-basement or ground closed room, an independent mechanical air supply and exhaust system shall be installed; Ventilation shall meet the following requirements: normal operation, air exchange times not less than 6 times /h, and emergency exhaust air exchange times not less than 12 times/h; When not working, the number of air changes should not be less than 3 times /h, so if gas is used, it is mandatory to install it, but if it is an electric drinking appliance, it is not needed.
Baidu encyclopedia-basement
People's Daily Online-The basement of a residential area in Fuzhou was changed into a "canteen" by the property, which was complained earlier.