Stairs:- A series of steps arranged to connect one oor to another is called stair . T rea d:- The horizontal upper part of a step on which foot is place is called tread. Riser:- The vertical portion of a step providing support to the tread is c alled riser . STAIR CASE
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&aluster:- It is a wooden or "asonr$vertical "e"!er supporting ahandrail.'ewel post:-It is a wooden or "etalic postsupporting the handrail ( is usuall$provided at the hand) foot or at points
where the !alusters change there
*andrail:-
The$ are provided to give support tothe user. It is supported on !alusters( run parallel to the slop of the stair.