RCC Structures Design
For a ribbed slab

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

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RCC Structures Design
The self-weight of the footing, is

Also considered for calculating the upward pressure on footing
Both (b) and (c)
Not considered for calculating the area of the footing
Not considered for calculating the upward pressure on footing

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RCC Structures Design
If the depth of actual neutral axis of a doubly reinforced beam

Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously
Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
All listed here

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