If p₁ and p₂ are effective lateral loadings at the bottom and top exerted by a level earth subjected to a super-load on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is

If p₁ and p₂ are effective lateral loadings at the bottom and top

1.	If p₁ and p₂ are effective lateral loadings at the bottom and top exerted by a level earth subjected to a super-load on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is
A.	(p₁ - p₂)/2] h
B.	(p₁ + p₂)/4] h
C.	(p₁ + p₂)/2] h
D.	p₁ - p₂) ⅔h
Answer» D. p₁ - p₂) ⅔h

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If p₁ and p₂ are effective lateral loadings at the bottom and top exerted by a level earth subjected to a super-load on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is

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