3. | Calculate the change in total vertical normal stress (o) and in effective stress (6') au a depth of 10 feet in a saturated clay layer if the water table is dropped from the ground surface to a depth of 20 feet below the ground surface. The clay has a water content of 35%, S = 100% and G, = 2.75. Assume that no change in degree of saturation or water content occurs when the water table is lowered. Take into account the capillary stresses generated.

3. | Calculate the change in total vertical normal stress (o) and in effective stress (6') au a depth of 10 feet in a saturated clay layer if the water table is dropped from the ground surface to a depth of 20 feet below the ground surface. The clay has a water content of 35%, S = 100% and G, = 2.75. Assume that no change in degree of saturation or water content occurs when the water table is lowered. Take into account the capillary stresses generated.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

3.
| Calculate the change in total vertical normal stress (o) and in effective stress
(o) ai a depth of 10 feet in a saturated clay layer if the water table is dropped from the
ground surface to a depth of 20 feet below the ground surface. The clay has a water
content of 35%, S = 100% and G, = 2.75. Assume that no change in degree of saturation
or water content occurs when the water table is lowered. Take into account the capillary
stresses generated.

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Step 3:- 1st Case: when water table is at Ground surface (GL)

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