RCC Structures Design
If p₁ and p₂ are mutually perpendicular principal stresses acting on a soil mass, the normal stress on any plane inclined at angle θ° to the principal plane carrying the principal stress p₁, is:

[(p₁ - p₂)/2] + [(p₁ + p₂)/2] cos 2θ
[(p₁ + p₂)/2] + [(p₁ - p₂)/2] sin 2θ
[(p₁ - p₂)/2] + [(p₁ + p₂)/2] sin 2θ
[(p₁ + p₂)/2] + [(p₁ - p₂)/2] cos 2θ

ANSWER DOWNLOAD EXAMIANS APP

RCC Structures Design
For a ribbed slab

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

ANSWER DOWNLOAD EXAMIANS APP