Pick up the assumption for the design of a pre-stressed concrete membe

1.	Pick up the assumption for the design of a pre-stressed concrete member from the following:
A.	transverse plane section remains a plane after bending
B.	uring deformation limits, Hook's law is equally applicable to concrete as well as to steel
C.	ariation of stress in reinforcement due to changes in external loading is negligible
D.	ll the above
Answer» E.

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Pick up the assumption for the design of a pre-stressed concrete member from the following:

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