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

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RCC Structures Design
According to load factor method, the permissible load ‘W’ on a short column reinforced with longitudinal bars and lateral stirrups, is

Stress in concrete × area of concrete + Stress in steel × area of steel
Stress in steel × area of steel
None of these
Stress in concrete × area of concrete

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