The net height of the stairs should not be less than the minimum net height
The net height of the stairs should not be less than 2m.
"General rules for the design of civil buildings" GB50352--2005 excerpts:
6.7.5 The height of the upper and lower aisle of the staircase platform shall not be less than 2m and the height of the ladder shall not be less than 2.20m.
Note: The height of the ladder is the vertical height of the upper edge of the upper protrusion from the leading edge of the tread (including the range of 0.30m outside the minimum and maximum stepped leading edge lines).
According to the vertical processing and staircase practices change, the upper and lower staircase platform height is not necessarily consistent with the floor of the net, this time its net height should not be less than 2m, people do not meet when walking. The height of the ladder should generally meet the people in the stairs straight up the arm up when the fingers just touched the upper edge of the protrusion is limited, to ensure that people do not meet and make a sense of depression, so the usual staircase slope, Net high to 2.20m.
Staircase rest platform of the net height of the minimum should not be less than 2m, staircase the minimum height of not less than 2.2m
