RCC Structures Design
The spacing of transverse reinforcement of column is decided by the following consideration.

The least lateral dimension of the column
All listed here
Forty-eight times the diameter of transverse reinforcement
Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column

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

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

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