What is the width of the stairs in the middle of the rest?
Greater than or equal to the staircase between 1 and 2 and can not be small and 1.2m
The width of the rest platform is greater than or equal to 1.2m and shall not be less than the width of the ladder!
The net width of the stairs is generally the horizontal distance between the wall to the center of the armrest or the horizontal distance between the handrails center!
Staircase intermediate rest platform width should not be less than the width of its ladder, and not less than 1.2m, the floor platform to rain or equal to the width of the middle platform. Hope to adopt
First, according to the "Residential Design Code" GB 50096 - 1999 (2003 edition) of the 4.1.4 staircase platform net width should not be less than the staircase ladder width, and not less than 1.20m. Second, according to the "Civil Building Design General" GB 50352-2005 6.7.3 ladder change direction, the handrail steering ...
8.2.4 The main evacuation staircase shall comply with the following requirements:
1 step width should not be less than 0.28m, step height should not be greater than 0.16m, continuous step does not exceed 18, more than 18, should be added intermediate rest platform, staircase platform width should not be less than the width of the ladder, and not less than 1.10 M;
2 should not use the spiral staircase, the use of fan-shaped ladder, the distance from the narrow handrail horizontal distance 0.25m stepping width should not be less than 0.22m, wide end armrest should not be greater than 0.50m, rest platform narrow end of not less than 1.20m;
