If R and T are rise and tread of a stair spanning horizontally, the st – McqOptions

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1.	If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width
A.	1/40th of span.
B.	R + T
C.	T-R
D.	R2 + T2
Answer» D. R2 + T2

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