RCC Structures Design
The modular ratio ‘m’ of a concrete whose permissible compressive stress is ‘C’, may be obtained from the equation.

m = 3500/3C
m = 700/3C
m = 1400/3C
m = 2800/3C

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RCC Structures Design
Steel beam theory is used for

Doubly reinforced beams ignoring compressive stress in concrete
Steel beams encased in concrete
Design of simple steel beams
Beams if shear exceeds 4 times allowable shear stress

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