2.2 Bearing capacity for footings on layered soils It may be necessary to place footings on stratified deposits where the thickness of the top stratum from the base of the footing d is less than the H distance computed as H=B tana/2. In this case the rupture zone will extend into the lower layer(s)depending on their thickness and require some modification of quit There are three general cases of the footing on a layered soil as follows: Case 1.Footing on layered clays (all =0) a.Top layer weaker than lower layer(c1<c2) b.Top layer stronger than lower layer(c1>C2)2.2 Bearing capacity for footings on layered soils ▪ It may be necessary to place footings on stratified deposits where the thickness of the top stratum from the base of the footing d1 is less than the H distance computed as H=B tanα/2. ▪ In this case the rupture zone will extend into the lower layer (s) depending on their thickness and require some modification of qult ▪ There are three general cases of the footing on a layered soil as follows: ▪ Case 1. Footing on layered clays (all φ=0) ▪ a. Top layer weaker than lower layer (c1<c2 ) ▪ b. Top layer stronger than lower layer(c1>c2 )