Explain briefly the requirement of good staircase. How are treads and risers proportioned for a stair?
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Components of Stairs
REQUIREMENTS OF GOOD STAIRS
A good stair should provide an easy, quick and safe mode of communication between the various floors of the building. General requirements of good stairs are as mentioned below.
1. LOCATION
It should preferably be located centrally, ensuring sufficient light and ventilation.
2. WIDTH OF STAIR
The width of stairs for public buildings should be 1.8 m and for residential buildings 0.9 m.
3. LENGTH
The flight of the stairs should be restricted to a maximum of 12 and minimum of 3 steps.
4. PITCH OF STAIR
The pitch of long stairs should be made flatter by introducing landing. The slope should not exceed 400 and should not be less than 250.
5. HEAD ROOM
The distance between the tread and soffit of the flight immediately above it, should not be less than 2.1 to 2.3 m. This much of height is maintained so that a tall person can use the stairs with some luggage on its head.
6. MATERIALS
Stairs should be constructed using fire resisting materials. Materials also should have sufficient strength to resist any impact.
7. BALUSTRADE
All open well stairs should be provided with balustrades, to avoid accidents. In case of wide stairs it should be provided with hand rails on both sides.
8. LANDING
The width of the landing should not be less than the width of the stair.
9. WINDERS
These should be avoided and if found necessary, may be provided at lower end of the flight.
10. STEP PROPORTIONS
The ratio of the going and the rise of a step should be well proportioned to ensure a comfortable access to the stair way.
Hope it will help uh if it helps plz mark as brainlist answer
REQUIREMENTS OF GOOD STAIRS
A good stair should provide an easy, quick and safe mode of communication between the various floors of the building. General requirements of good stairs are as mentioned below.
1. LOCATION
It should preferably be located centrally, ensuring sufficient light and ventilation.
2. WIDTH OF STAIR
The width of stairs for public buildings should be 1.8 m and for residential buildings 0.9 m.
3. LENGTH
The flight of the stairs should be restricted to a maximum of 12 and minimum of 3 steps.
4. PITCH OF STAIR
The pitch of long stairs should be made flatter by introducing landing. The slope should not exceed 400 and should not be less than 250.
5. HEAD ROOM
The distance between the tread and soffit of the flight immediately above it, should not be less than 2.1 to 2.3 m. This much of height is maintained so that a tall person can use the stairs with some luggage on its head.
6. MATERIALS
Stairs should be constructed using fire resisting materials. Materials also should have sufficient strength to resist any impact.
7. BALUSTRADE
All open well stairs should be provided with balustrades, to avoid accidents. In case of wide stairs it should be provided with hand rails on both sides.
8. LANDING
The width of the landing should not be less than the width of the stair.
9. WINDERS
These should be avoided and if found necessary, may be provided at lower end of the flight.
10. STEP PROPORTIONS
The ratio of the going and the rise of a step should be well proportioned to ensure a comfortable access to the stair way.
Hope it will help uh if it helps plz mark as brainlist answer
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