Do multi-storey houses need to design fire hydrant systems? How many floors do I need to set?

The following buildings should be equipped with indoor fire hydrants of DN65:

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.