1 The building area of the factory building (warehouse) is more than 300m2.
Stations, docks, airport terminals (ships and planes), exhibition buildings, shops, hotels, wards, outpatient buildings and library buildings with an area of more than 2.5000m3;
3.800-seat super-class and first-class theaters, theaters and cinemas of other levels, 1200-seat auditorium, gymnasium, etc.
4. Civil buildings such as office buildings, teaching buildings and non-residential residential buildings with more than 5 floors or 10000m3;
Indoor fire hydrant system should be set up in houses with more than 7 floors. When there are difficulties, only dry fire vertical pipes and indoor fire hydrants without DN65 can be set in fire hydrant box. The diameter of fire riser should not be less than DN65.
Note: Class D and E workshops (warehouses) with single-layer and multi-layer fire resistance rating of Grade I and II and less combustible materials, Class D workshops with fire resistance rating of Grade III and IV and building volume less than or equal to 3000m3, Class E workshops (warehouses) with building volume less than or equal to 5000m3, and grain warehouses and vaults are not equipped with indoor fire hydrants.
According to Code for Fire Protection Design of High-rise Civil Buildings 7. 1. 1, high-rise buildings must be equipped with fire hydrants.
Fire monitor: There are generally two kinds. The use of cannons in stadiums and gymnasiums is stipulated by the state. Small guns are only stipulated in some local laws and regulations. They are usually used in cinemas, atriums, etc. The clearance here is so high that the automatic sprinkler system cannot protect them.
Fire hydrant: formally known as fire hydrant, it is a fixed fire-fighting facility, and its main function is to control combustible substances, isolate combustion-supporting substances and eliminate fire sources. There are indoor hydrants and outdoor hydrants. Fire fighting systems include outdoor fire hydrant system, indoor fire hydrant system and fire extinguisher system, and some will also have automatic sprinkler system, water cannon system, gas fire extinguishing system, fire detection system and water mist system. Fire hydrants are mainly used for fire engines to take water from municipal water supply network or outdoor fire water supply network to extinguish fire, and can also be directly connected with hoses and water guns to extinguish fire. Therefore, the indoor and outdoor fire hydrant system is also one of the important fire fighting facilities.
Fire monitor: it is an important fire fighting equipment for long-distance fire fighting. Fire monitor is divided into two series: fire monitor (PS) and fire foam gun (PP). Fire monitor is a fire-fighting equipment that sprays water from a long distance to extinguish general solid substances, and foam gun is a fire-fighting equipment that sprays air foam from a long distance to extinguish Class A, B and C liquid fires.