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

During deformation limits, Hook's law is equally applicable to concrete as well as to steel
All listed here
A transverse plane section remains a plane after bending
Variation of stress in reinforcement due to changes in external loading is negligible

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RCC Structures Design
Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam

Are bent down at suitable places to serve as shear reinforcement
Are curtailed if not required to resist the bending moment
Are maintained at bottom to provide at least local bond stress
Are bent up at suitable places to serve as shear reinforcement

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