The following points should be kept in view to design and build a good stair.
1. LOCATION OF STAIR
In a residential house, the stairs may be provided near the main entrance.
2. WIDTH OF STAIR
In a residential building, it should be 3 feet.
3. LENGTH OF STAIR
The flight should provide a maximum of 12 and a minimum number of 3 steps.
4. PITCH OF STAIR
The maximum pitch for a domestic building should not exceed 42° and for a public building, it should not exceed 33°.
5. HEADROOM
The minimum headroom in a staircase should not be less than 6 feet 8 inches.
6. LANDING
The width of landing should be always greater than the width of a stair.
7. MATERIALS
Fire resisting materials should be used to construct the staircase for better safety.
8. BALUSTRADE
Handrail must be used on both sides of wide stairs
9. WINDERS
To build a safe and easy staircase, winders should be avoided
10. STAIR PROPORTIONS
The following guidelines should be considered to obtain a good result:
10. STAIR PROPORTIONS
1. (Going in cm) + (2×Rise in cm) = 60
10. STAIR PROPORTIONS
2. (Going in cm) × (Rise in cm) = 400 (approx).
10. STAIR PROPORTIONS
And the following rules should be considered to decide the step size:
10. STAIR PROPORTIONS
3. In residential buildings, the average size of a step is used as (25 cm × 16) cm.
10. STAIR PROPORTIONS
4. In public buildings, the average size of step varies from (27 cm × 15) cm to (30 cm × 13) cm.