A sand sample was used in a direct shear test for two trials. The first trial obtained a normal stress of 4000 psf when the shear stress at failure is 3000 psf. For the second trial, the normal stress is 6000 psf when shear stress at failure is 4000 psf. • Determine the angle of internal friction • Determine the value of apparent cohesion • Shear stress 15ft beneath the surface (psf) if the soil unit weight is 150 pcf • Major and minor principal stresses (psf) Final answer(s) should be in 3 decimal places.
A sand sample was used in a direct shear test for two trials. The first trial obtained a normal stress of 4000 psf when the shear stress at failure is 3000 psf. For the second trial, the normal stress is 6000 psf when shear stress at failure is 4000 psf. • Determine the angle of internal friction • Determine the value of apparent cohesion • Shear stress 15ft beneath the surface (psf) if the soil unit weight is 150 pcf • Major and minor principal stresses (psf) Final answer(s) should be in 3 decimal places.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A sand sample was used in a direct shear test for two trials. The first trial obtained a normal stress of 4000 psf when the shear stress at failure is 3000 psf. For the second trial, the normal stress is 6000 psf when shear stress at failure is 4000 psf.
• Determine the angle of internal friction
• Determine the value of apparent cohesion
• Shear stress 15ft beneath the surface (psf) if the soil unit weight is 150 pcf
• Major and minor principal stresses (psf)
Final answer(s) should be in 3 decimal places.
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