Calculate the equivalent hydraulic conductivity for the soil profile shown in Figure k = 2.3 x 10 cm/s k, = 8 x 102 cm/s k. = 5.7 x 10 cm/s, k, = 25.5 x 10 cm/s 10 m 2 m %3D k, = 9.2 x 107 cm/s k, = 27 x 107 cm/s 10 m

Calculate the equivalent hydraulic conductivity for the soil profile shown in Figure k = 2.3 x 10 cm/s k, = 8 x 102 cm/s k. = 5.7 x 10 cm/s, k, = 25.5 x 10 cm/s 10 m 2 m %3D k, = 9.2 x 107 cm/s k, = 27 x 107 cm/s 10 m

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Hydraulic Conductivity

Section: Chapter Questions

Problem 6.14P

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Concept explainers

Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.

Question

1. Calculate the equivalent hydraulic conductivity for the soil profile shown in figure

2. An excavation is proposed for a square area near the bend of a river, as shown in figure. It is expected that the flow of water into the excavation will come through the silt layer. Pumping test reveal an average horizontal hydraulic conductivity of 2 x 10 ^-5 cm/s in the silt layer. The excavation has to be kept dry. Determine the flow (q_s) into the excavation.

Transcribed Image Text:Calculate the equivalent hydraulic conductivity for the soil profile shown in Figure k = 2.3 x 10 cm/s k, = 8 x 102 cm/s k. = 5.7 x 10 cm/s, k, = 25.5 x 10 cm/s 10 m 2 m %3D k, = 9.2 x 107 cm/s k, = 27 x 107 cm/s 10 m

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