A square shallow foundation is located at depth of 1m, in stronger sand. A softer sand layer is located at a depth of 3 m measured below the ground surface. H = 5.0 m and K, = 4.0- Find B to carry the 4000 kN load using a factor of safety FS = 3. Assume that the bearing capacity of the top layer exceeds the ultimate bearing capacity. %3D Notes: For the top sand layer, unit weight= 14 kN/m'; '= 30°. For the bottom sand layer, unit weight = 11 kN/m2; '= 22°.

Structural Analysis
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Chapter2: Loads On Structures
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A square shallow foundation is located at depth of 1 m, in stronger sand. A softer sand layer
is located at a depth of 3 m measured below the ground surface. H= 5.0 m and K, 4.0.
Find B to carry the 4000 kN load using a factor of safety FS = 3. Assume that the bearing
capacity of the top layer exceeds the ultimate bearing capacity.
%3D
Notes:
For the top sand layer, unit weight= 14 kN/m'; d' = 30°.
For the bottom sand layer, unit weight=11 kN/m2; d'= 22°.
Transcribed Image Text:A square shallow foundation is located at depth of 1 m, in stronger sand. A softer sand layer is located at a depth of 3 m measured below the ground surface. H= 5.0 m and K, 4.0. Find B to carry the 4000 kN load using a factor of safety FS = 3. Assume that the bearing capacity of the top layer exceeds the ultimate bearing capacity. %3D Notes: For the top sand layer, unit weight= 14 kN/m'; d' = 30°. For the bottom sand layer, unit weight=11 kN/m2; d'= 22°.
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