What are the fire water sources of steel structure installation requirements?The purpose of setting up the fire lane is to ensure that the fire truck can reach the fire site smoothly and quickly in case of fire, and put out the fire in time.

(l) When the length of the part along the street of the building exceeds 150m or the total length exceeds 200m, the fire lane passing through the building shall be set.

The pedestrian passage connecting the main street and the inner courtyard (stairwell can be used) shall be set up along the street, and the distance shall not exceed 80m.

(2) For public buildings, such as gymnasiums with more than 3000 seats, halls with more than 2000 seats and exhibition halls with an area of more than 3000m2, circular fire lanes should be set up.When the length of the short side of the closed inner courtyard of the building exceeds 24m.A fire lane should be set up to enter the inner courtyard.

(3) The factory and warehouse shall be equipped with fire lane. When the floor area of a room J of class A, B and C exceeds 3000m ^ 2 or the floor area of a warehouse B and C exceeds 1500m ^ 2, the circular fire lane shall be set. If it is difficult, the fire lane can be set along its two long sides or a flat open space with a width of not less than 6m that can be used by fire trucks.Ring fire lane shall be set around high-rise construction (elevated warehouse).

(4) The natural water source and fire pool for fire trucks shall be equipped with fire lane.

(5) When the fire lane passes through the door opening, its clear height and width shall not be less than 4m; the clear width between the door buttresses shall not be less than 3.5m

(6) The width of the fire lane shall not be less than 3.5m, and the clear height shall not be less than 4m when there are obstacles such as pipe rack and trestle over the road

(7) At least two circular fire lanes shall be connected with other lanes.The end type fire lane shall be provided with a return lane or a return yard with an area of not less than 12m × 12m. The return yard for large fire trucks shall have an area of not less than 15m × 15m.The pipes and ditches under the fire lane shall be able to bear the pressure of large fire trucks.The fire lane can be used for traffic.

(8) The fire lane shall be as short as possible, and the level crossing with the railway shall be avoided.If it is necessary to level off, the lane shall be used for equipment, and the distance between two lanes shall not be less than the length of one train.