If T and R are the tread and rise of a stair which carries a load w p – McqOptions

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1.	If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is
A.	w (R + T)/T
B.	w √(R² + T²)/T
C.	w √(R + T)/T
D.	w (R/T)
Answer» C. w √(R + T)/T

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