3.3 meters high. How many steps does a 2.2-meter-wide and 4.2-meter-deep staircase need to be designed? How to order the size? How wide is the stair turntable?

In general calculation, according to the step size of 300* 150, such as the story height of 3300, divided by 150, it is 22, that is, 22 steps are needed, and a double-running staircase is designed, with a step of 1 1 and a step of 300, that is, the length of the whole staircase is In addition, the rest platform depth should not be less than 1 100 (the specification requires that the rest platform depth should not be less than the width of flight steps), that is, 3000+1100 = 4100, which does not conflict with the stairwell depth of 4200. Considering that the distance between the outermost step and the road route is greater than 300, the calculated step can be set to 300.