Stairs and elevator design requirements


1, stairwell design should comply with the relevant provisions of national standards, "architectural design code for fire protection" (GBJ16) and "fire protection design of tall buildings" (GB50045) is.

2, stair clear width of not less than 1.10m. Six and six of the following residential side railings of the staircase clear width of not less than 1m.

NOTE: stair clear width means the horizontal distance between the centers of the wall to the handrail.

3, staircase width of not less than 0.26m, stepping height should not exceed 0.175m. Handrail height of not less than 0.90m. When the stair railing horizontal section length is greater than 0.50m, handrails height of not less than 1.05m. Stairway railing vertical rod clearance should not exceed 0.11m.

4, landing clear width of not less than the clear width of the stair, and not less than 1.20m. Edge of the vertical height of a human line under construction aisle stairs platform of not less than 2m. At the entrance to the ground floor and an outdoor height should not be less than 0.10m.

5, when the stairwell is wider than 0.11m, must take measures to prevent children climbing slippery.

Six, seven or more residential or household entrance floor level height from the ground over 16m outdoor design of residential elevator must be set.

Note: ① the bottom as a store or other multi-storey residential buildings, you must set the elevator entrance floor level of its residents from the building's outdoor design ground height over 16m;

② underlying elevated levels do rise residential or storage space, you must set the elevator entrance floor level of its residents from the ground outside the building height of more than 16m;

③ the top two layers of a thermocline housing, the thermocline part excluding layers. The height of its entry level tenants from the building entrance floor level outdoor design ground does not exceed 16m, may not have an elevator;

④ housing intermediate layer has a direct access to the outdoor ground entrances and have fire exits, the number of layers from the intermediate layer may be calculated;

7, and more than twelve stories high-rise residential, set not less than two elevators per building, one of which should be configured to accommodate a stretcher lift.

8, high-rise residential elevators should be located on each station. When non-residential elevators located on each floor station, no station should not exceed two layers. Tower and gallery-style high-rise residential elevator should focus group layout. Each unit type high-rise residential units located only one elevator should be used to contact the gallery connected.

9, lobby depth of not less than the maximum depth of more than one elevator car, and not less than 1.50m.