RCC Structures Design
If P kg/m² is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by

D = 0.0775 aP
D = 0.775 Pa
D = 0.07775 aP
D = 0.00775 aP

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RCC Structures Design
The spacing of transverse reinforcement of column is decided by the following consideration.

Forty-eight times the diameter of transverse reinforcement
The least lateral dimension of the column
All listed here
Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column

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