Questions from Geotechnical Engineering

Q: Refer to Figure 12.42. Given: H1 = 5

Refer to Figure 12.42. Given: H1 = 5 ft, H2 = 7 ft, H3 = 6 ft, and Ds = 3000 lb/ft2 . Also, Clay: e = 1.1, Gs = 2.72, LL = 45 Sand: e = 0.58, Gs = 2.65 Estimate the primary consolidation settlement...

Q: The coordinates of two points on a virgin compression curve are as

The coordinates of two points on a virgin compression curve are as follows. e1 = 0.82 ’ 1 = 2500 lb/ft2 e2 = 0.70 ’2 = 4000 lb/ft2 Determine the void ratio that corresponds to a pressure of 6000 l...

Q: The laboratory consolidation data for an undisturbed clay specimen are as follows

The laboratory consolidation data for an undisturbed clay specimen are as follows. e1 = 1.1 ’ 1 = 1 ton/ft2 e2 = 0.9 ’ 2 = 3 ton/ft2 What is the void ratio for a pressure of 3.5 ton/ft2 ? (Not...

Q: The following data are given for a direct shear test conducted on

The following data are given for a direct shear test conducted on dry silty sand: Specimen dimensions: 63 mm × 63 mm × 25 mm (height) Normal stress: 105 kN/m2 Shear force at failure: 300 N Determine...

Q: Following are the results of consolidated-undrained triaxial tests on undisturbed

Following are the results of consolidated-undrained triaxial tests on undisturbed soils retrieved from a 4 m thick saturated clay layer in the field (sat = 19 kN/m3 ). Estimate grap...

Q: A consolidated-drained triaxial test was conducted on a normally consolidated

A consolidated-drained triaxial test was conducted on a normally consolidated clay with a chamber pressure, 3 = 25 lb/in2 . The deviator stress at failure is (ud)f = 33 lb/in2 . Determine the follow...

Q: The results of two consolidated-drained triaxial tests on a clay

The results of two consolidated-drained triaxial tests on a clay are given here. Calculate the shear strength parameters of the soil.

Q: Refer to Figure 3.13. After the construction of a

Refer to Figure 3.13. After the construction of a concrete retaining wall, backfill material from a nearby borrow pit was brought into the excavation behind the wall and compacted to a final void rati...

Q: Consider the triaxial tests in Problem 13.12. What

Consider the triaxial tests in Problem 13.12. What are the normal and shear stresses on a plane inclined at 40° to the major principal plane for Specimen I? What are the normal and shear stresses on...

Q: A clay sample was consolidated in a triaxial test chamber under an

A clay sample was consolidated in a triaxial test chamber under an all-around confining pressure of 22 lb/in2 . The sample was then loaded to failure in an undrained condition by applying an additiona...