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# 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

A. $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left[ {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right]$$

B. $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}\left[ {\frac{{1 + \sin \varphi }}{{1 - \sin \varphi }}} \right]$$

C. $${\text{h}} = \frac{{\text{W}}}{{{\text{Aw}}}}{\left[ {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right]^2}$$

D. $${\text{h}} = \sqrt {\frac{{\text{W}}}{{{\text{Aw}}}}} {\left[ {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right]^2}$$

This Question Belongs to Civil Engineering >> RCC Structures Design

Related Questions on RCC Structures Design

If the shear stress in a R.C.C. beam is

A. Equal or less than 5 kg/cm2, no shear reinforcement is provided

B. Greater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided

C. Greater than 20 kg/cm2, the size of the section is changed

D. All the above