The main passage of fire evacuation in shopping malls and supermarkets is 3m, and the second passage is 2m. The minimum clear width of supermarket fire exits in other locations shall not be less than 1.4m. The supermarket channel exceeding 11,111 square meters shall not be less than 2.4M.

the distance between the two longest fire doors in the place with sprinkler system can reach 37.5 meters.

there should be no obstruction at the entrance of fire hydrant box, as long as there is no obstacle below the fire shutter, which will not affect the descent. The clear width of the evacuation door of the supermarket should not be less than 1.4m, and no step should be set within 1.4m inside and outside the entrance.

cooked food processing in large supermarkets should be arranged by external walls. This kind of place consumes a lot of electricity and is easy to cause fire. Therefore, the processing equipment should be located in a special room, separated from other parts by a wall with a fire resistance limit of not less than 2 hours and a floor for 1.5 hours, and the exit door should be a Class B fire door.

Extended data:

The horizontal flow speed of people has the following characteristics and values. When the per capita occupied area in the evacuation passage is 2㎡, people flow freely, and the corresponding horizontal velocity of migration flow is 1.27 m/s.

when the per capita occupied area in the evacuation passage is 1.5㎡, the migration of people begins to show a state of stagnation, and the corresponding horizontal speed of migration flow is 1.73 m/s. When the per capita occupied area in the evacuation passage is less than 1.28㎡, it may cause danger.

when the per capita occupied area in the evacuation passage is reduced to 1.25m2, the front and rear people will start to touch each other, which will lead to pushing down and squeezing in an emergency, resulting in casualties.

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