Design and production of a carbon steel staircase made of perforated sheet metal with a hole diameter of 20mm, thickness 5mm, composed of 2 flights, for a total of 42 steps, each 850mm wide.
The first flight consists of 23 steps, whose tread is 28cm, the riser of 17.5cm.
The second flight consists of 19 steps, whose tread is 38cm, the riser of 20cm
The staircase will have a handrail on one side