How do I measure for a straight steel staircase?

Measure from the finished floor at the bottom to the finished floor at the top, the horizontal length available for the flight and the stair width you want. Give us the size of the floor opening and the slab thickness, because the top anchor plates connect to its edge. If the floors are not finished yet, add the thickness of the tiles or boards. From these figures we calculate the number of steps and the pitch for an even, comfortable climb. Follow the straight-stair survey.