What is the width of the stairs of the residents'
4.1.5 When the net width of the stairwell is greater than 0.11m, measures to prevent children from climbing must be taken. 11. ladder handrail height 0.9M, horizontal section railings greater than 0.5M should be 1.05M
4.1.4 The net width of the staircase platform shall not be less than the net width of the staircase and shall not be less than 1.20m. The vertical height of the lower edge of the structure of the stairway to the pedestrian passage should not be less than 2 m. Entrance floor and outdoor ground should be height difference, and should not be less than 0.10m.
4.1.3 staircase step width should not be less than 0.26m, step height should not be greater than 0.175m. Handrail height should not be less than 0.90m. Staircase horizontal railings greater than 0.50m, the armrest height should not be less than 1.05m. Stair rails between the vertical bar clearance should not be greater than 0.11m.
First find neighborhood and property consultation! No law, only the law! Added: sorry! Just said 250 is the old building, and now the latest is the width of not less than 90, it seems that your district steps are qualified! Question: 90 is a long time to start? People say that the stairs should be the width of 120. Answer: This is the most detailed, look at your own control! The net width of the staircase should not be less than 1.10m. Six-story and six-storey residential, while the width of the ladder with a railing should not be less than 1m.
Note: The net width of the stairs is the horizontal distance between the wall and the center of the handrail.
