5. A geotechnical engineering laboratory exercise was conducted to determine the suitability of a clay soil for use in a landfill liner. The exercise consisted of two parts: (a) determining the hydraulic conductivity of the clay soil using a falling head permeameter, and (b) predicting the expected time for leachate to break through a landfill liner made from the same clay soil. a) A sketch (not-to-scale) of the laboratory apparatus used in the falling head permeability test and associated information is shown below. Based on the test results, determine the hydraulic conductivity of the clay soil. Report your answer in cm/s. Diameter of standpipe = 1 mm Diameter of clay soil core = 50 mm Length of clay soil core = 100 mm Aren a Sumple area A The following results were collected in the falling head test: Time (hours) Head (h, in mm) 0.0 0.5 1.0 2.0 4.0 Valve 1000 877 705 546 273

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
5.
A geotechnical engineering laboratory exercise was conducted to determine the
suitability of a clay soil for use in a landfill liner. The exercise consisted of two parts: (a)
determining the hydraulic conductivity of the clay soil using a falling head permeameter, and (b)
predicting the expected time for leachate to break through a landfill liner made from the same clay
soil.
a) A sketch (not-to-scale) of the laboratory apparatus used in the falling head permeability test
and associated information is shown below. Based on the test results, determine the hydraulic
conductivity of the clay soil. Report your answer in cm/s.
Diameter of standpipe = 1 mm
Diameter of clay soil core = 50 mm
Length of clay soil core =
Area a
h
100 mm
Sample
аrea A
L.
The following results were collected in the falling head test:
Time (hours)
Head (h, in mm)
0.0
0.5
1.0
2.0
4.0
Valve
1000
877
705
546
273
b) If a 36-in thick landfill liner is made with the clay soil tested above, how long would it take
for leachate to break though across the liner if the water level in the landfill is a constant 3
inches above the top of the liner? Assume the porosity of the clay soil is 0.4.
Transcribed Image Text:5. A geotechnical engineering laboratory exercise was conducted to determine the suitability of a clay soil for use in a landfill liner. The exercise consisted of two parts: (a) determining the hydraulic conductivity of the clay soil using a falling head permeameter, and (b) predicting the expected time for leachate to break through a landfill liner made from the same clay soil. a) A sketch (not-to-scale) of the laboratory apparatus used in the falling head permeability test and associated information is shown below. Based on the test results, determine the hydraulic conductivity of the clay soil. Report your answer in cm/s. Diameter of standpipe = 1 mm Diameter of clay soil core = 50 mm Length of clay soil core = Area a h 100 mm Sample аrea A L. The following results were collected in the falling head test: Time (hours) Head (h, in mm) 0.0 0.5 1.0 2.0 4.0 Valve 1000 877 705 546 273 b) If a 36-in thick landfill liner is made with the clay soil tested above, how long would it take for leachate to break though across the liner if the water level in the landfill is a constant 3 inches above the top of the liner? Assume the porosity of the clay soil is 0.4.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Soil engineering for highway design
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning