According to the provisions of GB50045-95. Regulations on fire protection design of high-rise civil buildings, the fire hose should not exceed 25 meters. Commonly used are 20 meters and 25 meters.
The exact number of meters used in the place you mentioned depends on the water supply and drainage design. Generally, 25 meters are used. General Plane Layout The fire protection design of the general plan layout of the community mainly includes fire separation distance and fire lane.
Fire separation distance. Generally speaking, taking into account the factors of sunlight in residential areas, the distance between north and south is relatively large, and most of the buildings that are adjacent to east and west mainly cause insufficient fire separation distance. There are generally the following situations: First, the fire separation distance between adjacent residential buildings is insufficient.
Legal basis:
Doors of high-rise residential buildings should not directly open to the front room in the "Code for Fire Protection Design of High-rise Civil Buildings". The smoke and fire prevention effect of the room, the front section stipulates that the door should not be opened to the front room, but the latter section has relaxed the regulations, and the scope of relaxation is not clear enough, so it is difficult to implement. For small and medium-sized cities, the installation of front doors in residential buildings Most of the houses are tower-style houses with one staircase and two households.
If the door of this kind of building is not opened to the front room, it is extremely difficult to arrange. Even if an independent front room is formed, it is not conducive to normal use and safety due to the large number of doors. Evacuation. The author believes that if the floor of this type of building is not high (below 12 floors), when the door adopts Class B fire doors, the door can be opened to the front room. For the smoke prevention effect of the front room, the door should not be opened to the front room as far as possible. If it is really difficult, the door of the front room must not exceed half of the door of the floor.
