RCC Structures Design
‘P’ is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The maximum stress ‘f’ in the beam, subjected to a maximum bending moment ‘M’, is

f = (P/A) + (M/6Z)
f = (P/A) + (M/Z)
f = (P/'+ (Z/M)
f = (A/P) + (M/Z)

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

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

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