RCC Structures Design
If the modular ratio is ‘m’, steel ratio is ‘r’ and overall depth of a beam is ‘d’, the depth of the critical neutral axis of the beam, is

[m/(m - r)] d
[m/(m + r)] d
[(m + r)/m] d
[(r - m)/m] d

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RCC Structures Design
As per IS : 456, the reinforcement in a column should not be less than

0.5% and not more than 5% of cross-sectional area
0.7% and not more than 7% of cross-sectional area
0.6% and not more than 6% of cross-sectional area
0.8% and not more than 8% of cross-sectional area

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