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+--- Thread: staircase in public buildings is usually (/Thread-staircase-in-public-buildings-is-usually)
staircase in public buildings is usually - qizhen0809 - 10-18-2017
greater than 0.11m, to prevent children from falling. 3. The net width of the staircase platform shall not be less than 1.10m in addition to the width of the ladder. 4. The width of the ladder in the residential design norms are clearly defined in other buildings, must meet the requirements of fire evacuation. The width of the performance staircase in public buildings is usually too large, but pay attention to the relationship between the setting of the handrail and the
width of the ladder. That is: the stairs should be at least one side of the handrail, ladder width of three shares of the flow of people should be on both sides of the handrail, up to four flow, should be added to the middle armrest one indoor and outdoor step step width should not be less than 0.30m, step height should not be greater than 0.15 m, usually using 0.35m and 0.125m these two parameters. It is important to note that it is not allowed to be at least one
level, at least two levels, because the height of the ground is too small, the pedestrian is not easy to distinguish between the height difference, lack of mental preparation, Leg legs. Another problem is that when the use of rotating staircase for the evacuation ladder, you must meet the step in the inner armrest or simple wall 0.25m, the tread width should not be less than 0.22m requirements, which in the fire specifications are clearly defined. Third, the specific
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