1. The fire hydrant installation design should be considered to be installed at the intersection area of the street. In the eye-catching position that does not affect pedestrians and traffic, consideration is also given to the convenience of maintenance and daily drainage. Such as the sidewalk along the street. Next to the rainwater outfall, sidewalk tree side. Some ground-type fire hydrants are buried and blocked by soil after the initial installation and later road elevation changes, making it impossible to discharge water, resulting in changes in water quality in the fire hydrant cavity, corrosion of screw rods, etc., affecting the water quality of the pipe network and The service life of the fire hydrant. 7.2.2 of the "High Regulations" stipulates: "The number of outdoor fire hydrants should be calculated and determined according to the water consumption." Practice shows that the number of water pump couplers must be considered when designing outdoor fire hydrants. One outdoor fire hydrant corresponds to one water pump combination. device.
Some designers consider the pump coupler and add the number of indoor fire hydrants calculated according to the outdoor fire water consumption to the number of outdoor fire hydrants required by the pump coupler to design outdoor fire hydrants. The number of settings is too large, which is not realistic and unreasonable. . Article 7.3.6 of the High Regulations stipulates: "The number of outdoor fire hydrants shall be calculated and determined according to the water consumption of outdoor fire hydrants specified in Article 7.2.2 of the High Regulations. The water consumption of each fire hydrant shall be 10 L/ s～15 L/s. "In order to facilitate the use of fire trucks, fire hydrants should be evenly arranged along the fire lanes. If they can be arranged on the side of the roadside near high-rise civil buildings, it can avoid the disadvantages of fire hoses bursting caused by fire trucks rolling over hoses. In order to facilitate fire trucks to directly To draw water from fire hydrants, the distance between the fire hydrant and the roadside should not be greater than 2 m; there should be firefighters’ operating sites around the fire hydrant, so the distance from the outer wall of the building should not be less than 5 m. The height of the fire hydrant should not exceed 40 m.
2. The installation design of the underground fire hydrant. The design and installation of the underground fire hydrant is located in the underground well. For consideration, the height of the water outlet from the ground should be controlled at about 30cm. Considering the convenience of maintenance and use, the plane of the water outlet should be close to the wellhead. If the fire hydrant well is very deep and the riser connected to the fire hydrant is too long, the standpipe should be fixed in the well. Only in order to ensure the safety in use.
3. For the design of outdoor fire hydrants near super high-rise buildings, the distance between the fire hydrant and the water pump connector of the super high-rise building should be considered, so that once the super high-rise building catches fire, the fire department can take water and add pump connections within the shortest distance.
