S

Sonali Mishra • 4.53K Points
Extraordinary 

Q. The assumption made in the design of pre-stressed concrete sections under working load is that ?

(A) a plane cross-section before loading remain plane after loading
(B) any change in loading produces change of stress in concrete
(C) pre-stressing in steel remains constant
(D) all of the above
Correct : Option (D)

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