RCC Structures Design
As the percentage of steel increases

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

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RCC Structures Design
A pre-stressed concrete member is preferred because

All listed here
Removal of cracks in the members due to shrinkage
Large size of long beams carrying large shear force need not be adopted
Its dimensions are not decided from the diagonal tensile stress

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