I now home building, the building layer height of 3.8 meters, staircase length of 4.2 meters, 2.1 meters wide has been the basis of no way to amend the (later found the relevant information on the Internet is too short) Now step by step and other related data to how to design (the best map), first thank you, brother.
Stairs need to how many levels, tell you a parameter, you can plan:
?General staircase design reference size
????Name step high / mm stepping width / mm
?????????????????Maximum value Common value Minimum value Common value
????Residential 175 150 ~ 175 260 260 ~ 300
????Primary and secondary schools 150 120 ~ 150 260 260 ~ 300
????Office buildings 160 140 ~ 160 280 280 ~ 340
????Kindergarten 150 120 ~ 140 260 260 ~ 280
????Nursing homes 150 300
????Theater, Hall 160 130 ~ 150 280 300 ~ 350
When the layers are different, the total number of steps is obtained by dividing the height by the step height. And then by the step width X series, you can determine the horizontal projection length of the stairs ... ...
General residential staircase height of 150-170 or so (more suitable for 150mm), the width of 270-350 or so (usually 300mm).
According to the above parameters to calculate the results are as follows:
Step height: take 175mm, then: 3800/175 ≈ 22 level
Step width: take 260mm, then: (260 × 22) / 2 ≈ 2860mm.
So: Reentry staircase reentry platform width = 4200-2860 = 1340mm
So doing it down if your staircase is open without any problem.
But if it is closed staircase width is quite tense! Had to step by step width to 240mm ~ ~ ~ as shown below.
