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Design of stair cases is done considering the length of flights, step rises and application. When designing a stair case, the following proportions will be maintained in order to achieve a comfortable walk:
2* rise+ 1 going = 600
Recommended sizes for stairs:
Category |
Rise |
Going |
Sum (g+2r) |
Pitch |
Clear width |
Min
(mm) |
Max
(mm) |
Min
(mm) |
Max
(mm) |
Min
(mm) |
Max
(mm) |
Min
(deg) |
Max
(mm) |
Private stair |
100 |
220 |
225 |
350 |
550 |
700 |
41.5 |
800 |
Public stair |
100 |
190 |
250 |
350 |
550 |
700 |
38 |
1000 |
Assembly stair |
100 |
180 |
280 |
350 |
550 |
700 |
33 |
1000 |
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