Initial data
The height of the stairs 2500 mm
The length of the stairwells in the plan 3000 mm
Width of the track 800 mm
Number of steps 10
Ground instead of 4 stage
The thickness of the treads 50 mm
Tread Overhang 50 mm

Stringer
The length of the upper stringer 2663 mm
The length of the bottom stringer 1775 mm
Distance on the string between the gash under the stage 444 mm
The angle of the stairs 34.3° from the floor

Step size
Step height 250 mm
Depth steps 417 mm
The height of risers 200 mm