The entrance of the cave is 2 meters long, 2 meters wide, and the duplex building with a floor heigh

Updated on Solid wood 2024-08-07
1 answers
  1. Anonymous users2024-01-24

    In general, according to the size of the step 300 * 150, such as 3300 floor height, divided by 150, for 22, that is, 22 steps are needed, the design of double running staircase, a section is 11 steps, the tread is 300, that is, the length of the entire flight section is (11-1) * 300 = 3000, plus the depth of the rest platform is not less than 1100 (the specification requires that the depth of the rest platform is not less than the width of the ladder), that is, 3000 + 1100 = 4100, and the depth of the stairwell 4200 does not conflict, Considering that the distance between the most edge tread and the corridor line is greater than 300, the calculation of the tread 300 can be appropriately reduced to 280, or 290, and the calculation can be re-calculated according to the above steps.

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