What are the requirements for setting up a circular fire lane?

[AustinAnn]

Circular fire lanes should meet the following requirements: 1. The clear width and height of the lane should not be less than 4.0m; 2. The turning radius should meet the requirements for fire truck turning; 3. No obstacles such as trees or overhead pipelines that hinder fire truck operations should be placed between the fire lane and the building; 4. The edge of the fire lane adjacent to the building's exterior wall should preferably be no less than 5m from the building's exterior wall; 5. The slope of the fire lane should not exceed 8%; 6. The circular fire lane should have at least two connections with other lanes; 7. The pavement of the fire lane, rescue operation areas, and the pipelines and culverts beneath the fire lane and rescue operation areas should be able to withstand the pressure of heavy fire trucks.