The data from a falling-head test on a silty clay are: Cross sectional area of soil = 1000 mm^2 Length of soil sample = 200 mm Area of stand pipe = 40 mm^2 Head difference at time t = 0 is 500 mm Head difference at time t = 3 min is 300 mm a) Determine the hydraulic conductivity of the soil in cm/sec. b) What is the head difference at time t = 100 sec in mm

Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter7: Permeability
Section: Chapter Questions
Problem 7.13P
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The data from a falling-head test on a silty clay are:

Cross sectional area of soil = 1000 mm^2

Length of soil sample = 200 mm

Area of stand pipe = 40 mm^2

Head difference at time t = 0 is 500 mm

Head difference at time t = 3 min is 300 mm

a) Determine the hydraulic conductivity of the soil in cm/sec.

b) What is the head difference at time t = 100 sec in mm 

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