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Question:

Why is there a fire lane in the block, and the distance between the central roads should not exceed 160m?

Why is there a fire lane in the block, and the distance between the central roads should not exceed 160m?

Answer:

When calculating the building length, the inner fold line or concave curve can be determined by the linear distance between the projecting points; the outer line or the protruding curve should be determined according to the actual length.
In the construction and management of the residential district, there is the situation that the width of the road, the carrying capacity or the clearance of the road can not meet the needs of the fire truck, and bring inconvenience to fire and rescue. To this end, the district road design should take into account the needs of fire engines
Code for fire protection design of construction:7.1.1The total length of the length of the street and the street building, especially U or L shaped building, if not limited in its length, will give the evacuation of fire fighting and rescue personnel and internal inconvenience, delay time of fire. In order to meet the requirements of fire fighting, rescue and evacuation, the total length of these buildings must be limited without restricting the length of the wings of the U and L buildings. As the protection radius of municipal fire hydrants in China is about 150m, according to the regulations, it is generally located on both sides of urban roads, so the distance between fire lanes is set at 160m. The provisions of this article also play a guiding role in regional planning.

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