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 )/(1 + sin )]_________________?
(A) h = (W/Aw) [(1 –
(B) h = (W/Aw) [(1 + )/(1 + sin )]
(C) h = (W/Aw) [(1 – )/(1 + sin )]²
(D) h W/Aw) [(1 – )/(1 + sin )]²
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