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

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RCC Structures Design
Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than

42 diameters from the centre of the column
42 diameters from the outer edge of the column
42 diameters from the inner edge of the column
24 diameters from the centre of the column

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RCC Structures Design
In a singly reinforced beam

Plane sections transverse to the centre line of the beam before bending remain plane after bending
Steel possesses initial stresses when embedded in concrete
Compression is borne entirely by concrete
Elastic moduli for concrete and steel have different values within the limits of deformation of the beam

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