For the following statements: P: The lateral stress in the soil while being tested in an oedometer is always at-rest. Q: For a perfectly rigid strip footing at deeper depths in a sand deposit, the vertical normal contact stress at the footing edge is greater than that at its centre. R: The corrections for overburden pressure and dilatancy are not applied to measured SPT-N values in case of clay deposits. The correct combination of the statements is P Q R (a) True True False (b) False (c) False False True False False (d) True True True

For the following statements: P: The lateral stress in the soil while being tested in an oedometer is always at-rest. Q: For a perfectly rigid strip footing at deeper depths in a sand deposit, the vertical normal contact stress at the footing edge is greater than that at its centre. R: The corrections for overburden pressure and dilatancy are not applied to measured SPT-N values in case of clay deposits. The correct combination of the statements is P Q R (a) True True False (b) False (c) False False True False False (d) True True True

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter17: Settlement Of Shallow Foundations

Section: Chapter Questions

Problem 17.2P: A 3 m 4 m footing, founded at 2 m depth in a clay, applies a net pressure of 200 kN/m2. The bed...

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A 3 m 4 m footing, founded at 2 m depth in a clay, applies a net pressure of 200 kN/m2. The bed rock lies 10 m below the footing. The modulus of elasticity of the clay is 30 MN/m2. Using Janbus generalized relationship [Eq. (17.1)], assuming undrained conditions and flexible footing carrying uniform pressure, estimate the expected settlement.
A 1.5 m square footing carries a column with a service load of 105 kN. It is founded at a depthof 2 m on a medium stiff clay with an undrained shear strength of 42 kPa, an overconsolidationratio of 4, and a plasticity index of 35. The clay layer is 5 m thick and overlies a very stiff shale.Estimate the undrained settlement of the footing using the generalized elastic method withChristian and Carrier’s (1978) influence factors.
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The soil arrangement shown carries 1.88-meter square footing with a column load of 596 kN. Properties of sand: Above water table = 17.04 kN/m3, Below water table = 18.19 kN/m3. Properties of clay: 17.10 kN/m3, Cc = 0.383, void ratio = 0.65. Use H1 = 6 m., H2 = 7 m., H3 = 5 m., Df = 1 m. Determine the settlement of the normally consolidated clay in mm. Round off to three decimal places.
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A site is underlain by a soil that has a unit weight of 18.7 kN/m3above the groundwater table and 19.9 kN/m3below. The groundwater table is located at a depth of 3.5 m below the ground surface. Compute the a) total vertical stress, b) pore water pressure, and c) effective vertical stress at the following depths below the ground surface: 2.2 m (Point A), 4.0 m (Point B), 6.0 m (Point C), d) draw a sketch and show the points( A, B, C) on the sketch.
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