Provisions on the number of fire exits

The relevant provisions of the fire escape:

1. According to Article 6.0. 1 of Code for Fire Protection Design of Buildings, when the total length of an L-shaped building exceeds 220m or the length along the street exceeds150m, a fire escape should be set through the building. Your total length now is 180m, and the length along the street is 100 (just look at one side). There is no need to set fire lanes through buildings.

According to Article 6.0.2, if there is a closed inner courtyard or patio, it is advisable to set a fire lane that can enter the inner courtyard.

In addition, according to the interpretation of this article, the depth (width) of a building shall not exceed 50 meters. If it is more than 50 meters, the fire department can ask you to set up a fire lane to cross the building according to the situation.

2. According to Article 4.3. 1 of Code for Fire Protection Design of High-rise Civil Buildings, high-rise buildings should first set up circular fire lanes, that is, there should be fire lanes around this L-shaped building. If this is not possible, it can be relaxed to set fire lanes along two long sides (that is, two 100 meters). The total length shall not exceed 220, and the length along the street shall not exceed 150. There is no need to set fire lanes through buildings.