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RCC Structures Design

Q1: The maximum shear stress (qmax) in a rectangular beam is

A 1.25 times the average

B 1.50 times the average

C 1.75 times the average

D 2.0 times the average

E 2.5 times the average.

ANS:B - 1.50 times the average

According to shear stress distribution.
Shear stress=FAY/I.
Shear stress=6F/bd3(d2/4-y2).

At y=0 shear stress is maximum,
= 3/2*F/bd,
=3/2 avg shear stress.
=1.5.



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