Question: For a smooth vertical wall retaining a granular backfill inclined at an angle of = 15, check whether Eqs. (16.70) and (16.72) (or Tables

For a smooth vertical wall retaining a granular backfill inclined at an angle of α = 15°, check whether Eqs. (16.70) and (16.72) (or Tables 16.9 and 16.10) give the same values for the passive earth pressure coefficient. Use ϕ' = 30° and 40°.

Eqs. (16.70)

cos a + Vcos? a – cos? d' K, cos a .2 cos a V cos a - cos“ o'

Eqs. (16.72)

cos a + Vcos? a cos? d' K, cos a .2 cos

cos a + Vcos? a cos? d' K, cos a .2 cos a V cos a - cos o'

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