RCC Structures Design
A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm² and 300 kg/cm², the Safe load on the column, should not exceed

None of these
4,120 kg
412,000 kg
41,200 kg

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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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RCC Structures Design
If the length of a combined footing for two columns l meters apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where x̅ is the distance of centre of gravity of column loads).

y = L - (l - x̅)
y = L/2 - (l - x̅)
y = L/2 - (l + x̅)
y = L/2 + (l - x̅)

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