RCC Structures Design
A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n?. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is

Atft (d - n/3)
½ n₁ (1 - n₁/3) cbd²
bn (fc/2) (d - n/3)
All listed here

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