RCC Structures Design
If the shear stress in a R.C.C. beam is

Greater than 20 kg/cm², the size of the section is changed
All of these
Greater than 4 kg/cm², but less than 20 kg/cm², shear reinforcement is provided
Equal or less than 5 kg/cm², no shear reinforcement is provided

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

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