In order to prevent the building components in Zhengzhou residential area from collapsing during the fire and affect the normal operation of the fire lane, the standard of the circular passage of the road fire lane should be that the distance between the fire lane and the external wall is 5m, at least 3.5m wide, and the width of the fire lane is not less than 4m.
Zhengzhou, alias Shangdu and Greentown, the capital of Henan Province, is located in the south of China North China Plain and the lower reaches of the Yellow River, north of central Henan Province, bordering Kaifeng in the east, Luoyang in the west, Xinxiang and Jiaozuo across the Yellow River in the north, Xuchang in the south and Liandingshan in the southwest, with a total area of 7,567 square kilometers.