RCC Structures Design
An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 meters and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is

7.6 kg/cm²
21.5 kg/cm²
8.3 kg/cm²
21.5 kg/cm²

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

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

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