RCC Structures Design
If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit volume and the angle of repose φ, the lateral intensity of pressure p2 is

wh (1 - sin φ)/(1 + sin φ)
w (1 - cos φ)/h (1 + sin φ)
wh (1 - cos φ)/(1 + sin φ)
wh (1 - tan φ)/(1 + tan φ)

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RCC Structures Design
In a singly reinforced beam

Plane sections transverse to the centre line of the beam before bending remain plane after bending
Steel possesses initial stresses when embedded in concrete
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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