Standard Staircase Dimensions in Buildings
https://quantity-takeoff.com/staircase-dimensions-in-buildings.htm
Functioning as a system of steps leading people from one level of the building to another, a staircase is a pretty complex building element. This is because staircases have particular geometry and function. Everything about this building element needs to be carefully planned because of that. The dimensions of the steps and regulations of the heights and widths of the steps need to be carefully maintained. Not only that, you need to pay attention to the material being used as well.