GB 50016-2014 (2018年版) 第7.1.1条
| Roads within the block should be designed to accommodate fire truck access, and the distance between road centerlines should preferably not exceed 160 m. When the length of the building along the street exceeds 150 m or the total length exceeds 220 m, a fire access lane passing through the building should be provided. Where this is genuinely difficult, a circular fire access lane should be provided.