楼梯净宽标准：住宅楼梯与主要楼梯的区别

The net width of the main staircase steps should be no less than 1650mm. This applies to primary staircases within a building. For shared staircases in residential buildings, the net width of the steps should be no less than 1100mm. This ensures adequate space and safety for residents and visitors. These standards help ensure safe and comfortable use of staircases in various buildings.