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

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

See similar textbooks

Related questions

Q: A permeability test is carried out on a sample of and cross section is 1500mm^ 2 a soil whose k = 3…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A soil sample is having liquid limit of 60% and plastic limit of 25%. This soil can be classified as…

A: liquid limit of 60% plastic limit of 25%This soil can be classified as

Q: Following the sieve analysis and the specific gravity of "SAND 1", a hydrometer test was performed…

A: The hydrometer test is used to determine the distribution of soil particle sizes that are smaller…

Q: A sample of gravel from a stockpile has a mass of 6.80 kg at the time of sampling. After oven drying…

A: Solution; The gravel taken from the stockpile has some moisture content and after oven drying the…

Q: Estimate the coefficient of permeability for a uniform sand where a sieve analysis indicates that…

A: Given: D10 size = 0.15 mm D15 size = 0.19 mm

Q: 2. Interpret the results of the proctor test in table 1 and plot the images of the optimum moisture…

A: Given,Soil mass vs water content data Gs = 2.7FindRange of moisture cintent values in the field that…

Q: A laboratory test was conducted according to Method A of the ASTM D4318 to find the liquid limit of…

A: The wet mass of the soil sample with the mass of the can is measured, again the dry mass of the…

Q: Please answer parts d-f

A: For relative density required OMC range is ± 2% i.e., 17.5% to 13.5% But in field water content (w)…

Q: Type 11/111 sedimentation analysis: A laboratory settling test was performed on a suspension…

A: The extent of treatment required to be given to a particular water depends upon the characteristics…

Q: A carefully-weighed 51.3 gram soil sample was dispersed for particle-size analysis using the…

A: Let percentage clay in sample be C given, percentage clay in sample = C = 47% let 8 hour hydrometer…

Q: Describe the general relationship between soil particle sizes and size of void spaces between the…

A: Factors affecting permeability:

Q: 4.2 For a field test the technician is using a sand with a density of 96.7 pcf in his sand cone…

A: Given:- The density of the sand = 96.7 pcf = 96.7 lb/ft3 The data collected by the technician is:…

Q: Estimate the coefficient of permeability for uniform sand where a sieve analysis indicates that the…

A: Given: D10 size = 0.15 mm D15 size = 0.19 mm

Q: Figure 1 below shows the CBR results for two materials (1 and 2) what is the CBR value for each…

A: Given,CBR results for two materialsto determine,for soil 1the resilient modulus of the subgrade soil…

Q: Three kinds of experiments for measuring soil permeability coefficient

A: The following methods were used to measure the coefficient of permeability of fine grained and…

Q: A sample of the soil tested in triaxial with dimensions of 38 mm diameter and 76 mm height, its…

A: Diameter of cylinder, Height of cylinder, Mass of sample before drying, Mass of sample after drying,

Q: A sample, 65 mm in diameter and 35 mm high, taken from a clay layer 7 m thick, was tested in an…

A: Given data: sampled=65 mmh=35 mmfield H=7 m For 40% consolidation time taken is 19.5 min.

Q: A hydrometer analysis was completed on a fine grain soil having a Specific Gravity of 2.85. The…

A: Hydrometer Analysis Hydrometer analysis is a way of determining the particle size of soil in a…

Q: Limit tests performed on a clay indicate a liquid limit of 67 percent and a plastic limit of 32…

A: The given data is shown below:

Q: b) Additional representative samples were tested to further classify the soil by means of…

A: Data for Plasticity test Data for liquid limit test

Q: 3.3 The following test results were obtained on a clayey soil that has been proposed for a landfill…

Q: A soil sample is sampled from a job site. Its maximum dry density tested in a lab=106 pcf. If the…

A: %Relative compaction=γdryfγdrymax×100

Q: You are very disappointed that a compressibility experiment is no longer part of the CIE 334…

Concept explainers

Soil engineering for highway design

Soil engineering is a part of geotechnical engineering that deals with the characteristics of soil. It also helps to understand the behavior of the soil in different conditions. The basic concepts of soil are studied to check the strength, compressibility, and porosity of the soil. This makes soil engineering an important topic for civil engineering.

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.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

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

A sample of moist sand was cut out of a natural deposit by means of a sampling cylinder. The volume of the cylinder was 478 ml; the weight of the sample alone was 884 grams and 830 grams after drying. The volume of the dried sample, when rammed tight into a graduated cylinder, was 418 ml and its volume, when poured loosely into the same cylinder, was 616 ml. if the particle specific gravity was 2.67, compute the density index and the degree of saturation of the deposit.
Asap help me thank you
As part of a quality controlprogram, the field inspection engineer conducted a sand cone test to determine the field density. The following data were recorded using the sand cone method. • Calibrated dry density of Ottawa sand = 1667 ??/?3• Mass of Ottawa sand to fill the cone = 0.117 kg• Mass of jar + cone + sand (before use) = 6.1 kg• Mass of jar + cone + sand (after use) = 2.83 kg• Mass of moist soil from hole = 3.35 kg• Moisture content of moist soil = 16.1%a. Determine the dry unit weight of compaction in the field. (ANS: 14.97kn/m3) PLS ANSWER NUMBER 2 WITH COMPLETE SOLUTION 2. What is the relative compaction in the field if the maximum dry unit weight in the laboratory is 15.93 ??/?3?
A permeability test is carried out on a sample of and cross section is 1500mm^ 2 a soil whose k = 3 * 10^(-1) m / s. Briefly identify this while indicating its degree of permeability What diameter of measuring pipe do we use knowing that the load goes from 275 mm to 200 mm in 5 min? Compare the permeability of this soil identified in question a) with that of a sandy silt. Justify your answer Compare the frost hardness of the soil identified in question a) with that of gradual sand. Between these two soils, which will be the most suitable as road fill without risk of frost swelling? Justify your answer
3.A. What type of laboratory test can be used to determine soil permeability B in Table 1) Tabel 1 test 1 test 2 Unit of Pipe Diameter cm Diameter of soil 15 15 cm sample length of soil sample 30 30 cm initial elevation 60 60 cm height at end test 37 45 cm test duration 10 ?? minutes LO
A constant head permeability test is performed on soil that is 4 cm2, and 2.5cm long. The head difference applied during the test is 20 cm and 7 cm3 is collected over a time of 100 sec. Provide step by step solution. What is the permeability based on these test conditions and results.
In a sieve analysis test, 95.5% of the sample is passing the 5mm sieve and 5.13% is passing sieve #200, which of the following is correct about this sample: There is no clay in the sample the percent of silt and clay is: 5.13% There is 4.5% Sand and Gravel in the sample 95.5% of the sample is Sand and Silt
Q1 Data obtained from a laboratory consolidation test are tabulated as follows: Test points I 2 3 4 5 o' (kPa) Total AH (mm) 20 50 100 0.23 0.87 L.90 3.62 5.55 7.25 200 400 800 G,=2.70, Ho= (initial thickness at zero pressure) = 22.5 mm, w = (moisture content at the beginning of the test) = 0.78. Plot the e-logo' curve and calculate Ce Ae I+eo Ho log a - logo, log(o /06) ΔΗ Hint: and
Determine the compressive force (in lb) in the bars shown after a temperature rise of 173°F if d = 0.015 in. Round off the final answer to five decimal places. Use the following data: Bronze Aluminum A = 2.24 sq. in A = 2.78 sq. in E = 14959726 psi E = 10594540 psi L = 12.5 in L = 16.6 in α = 11.61 x 10-6/ °F α = 12.67 x 10-6/°F
You are working in a lab and are tasked with determining the percent plant available water for a particular soil sample. You take a field soil sample. The mass of your sample was 152g and it had 18.3% moisture by mass. Then, you place the soil sample in your pressure plate extractor and determine that the soil sample weighs 164.2g when the moisture potential is -33kPa and 130.7g at -1500kPa. What is the percent plant available moisture by mass of this soil sample? Please answer to one decimal place.
A permeability test was conducted on a saturated sample of coarse soil. The soil specimen has a 170 mm diameter and a length of 300 mm. hi and hz was 800 mm and 300 mm respectively. The permeabili this sample in cm/sec is 3.96 10 Time required to collect a volume equal to 350 cm at 20°C is: Select one: 4 min 5 min 4 sec 5 sec ge Teo