Problem: The DPWH in its previous study for a proposed sanitary landfill site in Pampanga is planning to use a clay liner for the landfill. Tests were performed on a sample clay from a borrow site. It was deemed necessary to have a minimum clay liner thickness of 0.30 m. The following results were obtained in the laboratory test. Initial water level in standpipe Final water level in standpipe Diameter of standpipe Height of soil sample Diameter of soil sample Duration of test = 96 cm - 56 cm = 12 cm = 10.2 cm - 5.4 cm = 12 hours The project manager would like to determine the effectiveness of using on-site clay soils for the lining material if it is favorable. Tests were also performed on the site clay and the following results were obtained. Height of soil sample Diameter of soil sample Volume of water collected = 8 cm = 5 cm %3D = 75600 cm = 60 cm = 1050 hours Constant head Duration of test 39. Determine the coefficient of permeability of the borrow clay in cm/sec. a. 1.36 x 10* b. 2.36 x 10* c. 3.61 x 10* d. insufficient data e. none of the above

Problem: The DPWH in its previous study for a proposed sanitary landfill site in Pampanga is planning to use a clay liner for the landfill. Tests were performed on a sample clay from a borrow site. It was deemed necessary to have a minimum clay liner thickness of 0.30 m. The following results were obtained in the laboratory test. Initial water level in standpipe Final water level in standpipe Diameter of standpipe Height of soil sample Diameter of soil sample Duration of test = 96 cm - 56 cm = 12 cm = 10.2 cm - 5.4 cm = 12 hours The project manager would like to determine the effectiveness of using on-site clay soils for the lining material if it is favorable. Tests were also performed on the site clay and the following results were obtained. Height of soil sample Diameter of soil sample Volume of water collected = 8 cm = 5 cm %3D = 75600 cm = 60 cm = 1050 hours Constant head Duration of test 39. Determine the coefficient of permeability of the borrow clay in cm/sec. a. 1.36 x 10* b. 2.36 x 10* c. 3.61 x 10* d. insufficient data e. none of the above

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.2P

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