RCC Structures Design
If jd is the lever arm and ΣO is the total perimeter of reinforcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

Q/3jdƩO
Q/jdƩO
Q/2jdƩO
2 × Q/jdƩO

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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
Removal of cracks in the members due to shrinkage
Its dimensions are not decided from the diagonal tensile stress
All listed here

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