Question: what are the requirements of a good stair?
Answer: Location. It should preferably be located centrally, ensuring sufficient light and ventilation.
Width of Stair. The width of stairs for public buildings should be 1.8 m and for residential buildings 0.9 m.
Length. ... 
Pitch of Stair. ... 
Head Room. ... 
Materials. ... 
Balustrade. ... 
Landing.