One, with the fire water supply building, its layers (except the equipment layer without combustibles) should be set up fire hydrant;
Two, indoor fire hydrant arrangement, should ensure that there are two lances of water filled water column at the same time to reach any part of the room. Building height is less than or equal to 24m, and volume is less than or equal to 5000 `m^3 ` of the warehouse, can use a water gun to fill the water column to any part of the room. Water gun filled water column length should be determined by calculation, generally should not be less than 7m, but A, B class plant, more than six floors of civil buildings, more than four floors of factories and warehouses, should not be less than 10m; high-rise industrial buildings, elevated warehouses, the water gun filled water column should not be less than 13m water column;
Three, indoor fire hydrant spigot at the hydrostatic pressure should be no more than 80m water column, such as over 80m water column, should be used to partition the water supply system. Fire hydrant spigot water pressure exceeds 50m water column, there should be decompression facilities;
four, fire elevator front room should be set up indoor fire hydrant;
five, indoor fire hydrant should be located in the obvious easy to access locations. Spigot height of 1.1m from the ground, the direction of its water should be down or with the setting of the fire hydrant wall at an angle of 90 °;
VI, cold storage of indoor fire hydrant should be located in the room temperature through the hall or stairwell;
VII, indoor fire hydrants should be calculated to determine the spacing. High-rise industrial buildings, elevated warehouses, A, B plant, indoor fire hydrant spacing should not exceed 30m; other single-story and multi-story building indoor fire hydrant spacing should not exceed 50m. the same building should be used within the unified specifications of the fire hydrant, water gun and water belt. The length of each water belt should not exceed 25m;
eight, with indoor fire hydrant building, such as flat roof, it is appropriate to set up a test and inspection of the fire hydrant on the flat roof;
nine, high-rise industrial buildings and water tanks can not meet the most unfavorable point of the hydrant water pressure requirements of other buildings, should be set up at each indoor hydrant to start the fire pump button directly, and should have protection Facilities.