Following data are given for a direct shear test conducted on dry sand: Specimen dimensions: 75 mm x75 mm x 30 mm (height) Normal stress: 250 kN/m Shear force at failure: 190N a. Determine the angle of friction, phi. b. What are the principal stresses at failure?

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Following data are given for a direct shear test conducted on dry sand.
Specimen dimensions: 75 mm x75 mm x 30 mm (height)
Normal stress: 250 kN/m
Shear force at failure: 190N
a. Determine the angle of friction, phi.
b. What are the principal Stresses at failure?
Transcribed Image Text:Following data are given for a direct shear test conducted on dry sand. Specimen dimensions: 75 mm x75 mm x 30 mm (height) Normal stress: 250 kN/m Shear force at failure: 190N a. Determine the angle of friction, phi. b. What are the principal Stresses at failure?
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