RCC Structures Design
An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus

Triangular load of the wall
Triangular load + load from the roof
UDL of wall + load from the roof
UDL of wall

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RCC Structures Design
If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight 'w' per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]²
h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]
h = (W/Aw) [(1 + sin φ)/(1 + sin φ)]
h = √(W/Aw) [(1 - sin φ)/(1 + sin φ)]²

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