For those large multi-functional buildings, such as L-shaped, U-shaped and mouth-shaped, if the length along the street exceeds 150m, or the total length exceeds 220m, a fire lane passing through the building must be set at a proper position to ensure fire safety.

Setting of fire lane

The fire lane must pass through the building to ensure that fire vehicles can reach the fire site quickly. The location of the fire lane should be reasonable, which is convenient for fire vehicles to enter and exit, and does not affect the normal use of the building.

knowledge source

This knowledge comes from pages 155 and 157 of the textbook "Technical Practice of Fire Safety", which is very important for fire safety.