a. Determine the coefficient of consolidation for the load range in cm squared/min. b. Based on the laboratory results above (a), compute the time (in years) it will take for 100 % consolidation of the 5 meter thick clay layer in the field. A sand layer overlies the clay layer and impervious rock underlies the clay layer.

Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter11: Compressibility Of Soil
Section: Chapter Questions
Problem 11.4P
Question
Results of a laboratory consolidation test on a 5 meter thick clay
layer (at a site) indicates t 50 = 12.2 minutes for the load increment
of 8 tons/ sq ft. The lab sample had drainage on the top only. The
lab sample height is 1.582 cm.
a. Determine the coefficient of consolidation for the load range
in cm squared/min.
b. Based on the laboratory results above (a), compute the time
(in years) it will take for 100 % consolidation of the 5 meter
thick clay layer in the field. A sand layer overlies the clay
layer and impervious rock underlies the clay layer.
Transcribed Image Text:Results of a laboratory consolidation test on a 5 meter thick clay layer (at a site) indicates t 50 = 12.2 minutes for the load increment of 8 tons/ sq ft. The lab sample had drainage on the top only. The lab sample height is 1.582 cm. a. Determine the coefficient of consolidation for the load range in cm squared/min. b. Based on the laboratory results above (a), compute the time (in years) it will take for 100 % consolidation of the 5 meter thick clay layer in the field. A sand layer overlies the clay layer and impervious rock underlies the clay layer.
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