Width and design of stair door

Now the floors of buildings are very high, so elevators will be installed, but elevators are not the only choice, so stairs will be designed, so if the elevator is broken, you can take the stairs. In case of fire, the stairs are also an escape route. What is the width of the stair door? What is the design of the stair door? Next, let's introduce you.

Width of stair door

The width of stair doors should be specified according to different building types and uses, such as public buildings should not be less than 6 square meters, and the front room of fire elevator should not be less than 10 square meters.

Design of stair door

The location of stair doors in stairwells should conform to the principle of being conducive to crowd evacuation, and the stair doors should be opened in the evacuation direction, otherwise the evacuation function of stair doors cannot be exerted. Only one stair door can be set in the closed stairwell, and no other doors and windows can be opened on the inner wall of the stairwell. The doors leading to the front room and stairwell of the smoke-proof stairwell are fire doors to prevent smoke and hot air from entering the stairwell.