RCC Structures Design
As the percentage of steel increases

Lever arm decreases
Depth of neutral axis increases
Depth of neutral axis decreases
Lever arm increases

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RCC Structures Design
Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than

42 diameters from the centre of the column
24 diameters from the centre of the column
42 diameters from the inner edge of the column
42 diameters from the outer edge of the column

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

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

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