The height of the building is 3 meters, the length of the staircase is 4 meters, it is required to make double turn stairs, and the rest platform is 1 meter. How to calculate the height of the rest platform? The width of the step height?

The height of the building is 3 meters, the length of the staircase is 4 meters, it is required to make double turn stairs, and the rest platform is 1 meter. How to calculate the height of the rest platform? The width of the step height?

Height of rest platform: 3 / 2 = 1.5m
The number of steps is 20
I.e. step height: 3 / 20 = 0.15m
Step width: 4-1 = 3 / 9 = 0.33m
Note: 9 = [20 (total number of steps) - 2 (2 rest platforms)] / 2 (double running stairs)