Is there a requirement for staircase handrail height in public places?
Third, the ladder change direction, the platform armrest at the minimum width should not be less than the net width of the ladder. When the need to carry large objects should be appropriate to widen.
Fourth, the progress of each ladder should generally not exceed 18, nor should not be less than 3.
Fifth, the staircase platform upper and lower corners of the net height should not be less than 2m. The height of the ladder should not be less than 2.20m.
Note: The height of the ladder is the vertical height of the taper line (including the minimum and the highest first step outside the leading edge line 0.30m) to the vertical height of the lower edge of the straight protrusion.
Sixth, the stairs should be at least one side of the handrail, ladder width of three shares of the flow should be on both sides of the handrail, up to four flow should be added middle armrest.
Article 4.2.1 Stairs
First, the number of stairs, location and staircase form should meet the requirements of easy to use and safe evacuation.
Second, the net width of the ladder should be in line with the provisions of the fire, the daily traffic for the main staircase ladder should be based on the characteristics of the use of buildings, generally per person flow width of 0.55 + (0 ~ 0.15) m number of people , Should not be less than two shares flow.
Note: 0 ~ 0.15m for the flow of people in the swing of the human body, public buildings, many places should take the upper limit.
7, indoor staircase handrail height from the front line of the amount of line should not be less than 0.90m. When the horizontal handrail on the side of the stairwell is more than 0.50m long, the height should not be less than 1m.
8, step forward part of the anti-slip measures should be appropriate.
Nine, there are children often use the stairs, ladder net width greater than 0.20m, must take security measures; railings should not be easy to climb the structure, vertical rod spacing between the distance should not be greater than 0.11m.
