RCC Structures Design
For a ribbed slab

Clear spacing between ribs shall not be greater than 4.5 cm
Width of the rib shall not be less than 7.5 cm
All listed here
Overall depth of the slab shall not exceed four times the breadth of the rib

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RCC Structures Design
In a singly reinforced beam

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

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