Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 11, Problem 11.9P
To determine
Find the degree of consolidation caused by the combination of vertical drainage and radial drainage.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1. Under normal loading condition, a 3.6 m thick clay
(normally consolidated) has P, = 190 KPa and e, =1.22. A
surcharge of 190 KPa reduces its void ratio to 0.98. The
hydraulic conductivity of the clay for the loading range is
6.1 x 10ʻ m/day.
a. What is the coefficient of volume compressibility of the
clay?
b. What is the coefficient of consolidation of the clay?
c. How long will it take for this clay layer to reach 60%
consolidation if it is drained on one side only?
3. A layered soil is shown with the corresponding values K1, K2, and K3.
a. Compute the equivalent horizontal coefficient of permeability
b. Compute the equivalent vertical coefficient of permeability
c. Compute the ratio of the equivalent horizontal coefficient of permeability to the equivalent
vertical coefficient of permeability
T
H1= 3 m
K1 =2 x 10 cm/s
H2= 4 m
K1 =3.2 x 10?cm/s
H= 12 m
H3= 5 m
K1 =4.1 x 10 cm/s
@6min
Chapter 11 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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
- Evaluate the plastic settlement, in meter(s) on a layer of plastic clay due to an increase of pressure caused by loads above it under the ff. conditions: Initial intergranular pressure (ơ) = 200 kPa Increase in intergranular pressure (delta o) = 150 kPa Thickness of the clay layer = 10m Coefficient of consolidation (Cc) = 0.315 Void ratio of the clay (e) = 1.5 %3D %3D %3Darrow_forwardHello professor thank uarrow_forwardASAParrow_forward
- A 3 layer soil has the following properties from top to bottom. Obtain the equivalent vertical coefficienct of permeability, in cm/sec, round off to 7 decimal places, and obtain the equivalent horizontal coefficient of permeability, in cm/sec, round off to 5 decimal places.arrow_forwardb) For a normally consolidated laboratory clay specimen drained on both sides, the follow are given o'o =150 kN/m², e = eo = 1.1 •o'o+ Ao = 300 kN/m², e = 0.9 The thickness of clay specimen = 25mm Time for 50% consolidation = 2mm a) Determine the hydraulic conductivity of the clay for the loading range. %3D CR[5] b) How long (in days) will it take for a 1.8m clay layer in the field (drained on one side) to reach 60% consolidation.arrow_forwardShow sol. The answer must be A. 37.5% B. 11.055 days C. 2.76 daysarrow_forward
- For a normally consolidated soil, the following is given: Determine the following: a. The compression index, Cc. b. The void ratio corresponding to pressure of 200 kN/m2arrow_forwardThe saturated NC clay is 8 meters deep. The moisture content is 40% and the specific gravity is 2.5. If we know that loading increased the effective stress in the middle of the layer by 270 kpa, then answer the following questions. (cc = 0.2, Cs = 0.05) 1. Calculate the settlement after the consolidation. 2. Calculate the void ratio after consolidation. 3. Calculate the volume compressibility coefficient in terms of Kpa 4. If we unload the load that we applied, calculate the swelling and final void ratio. 5. If the effective stress increases after loading the soil again by 570 Kpa in the middle of the soil layer, calculate the consolidation settlement.arrow_forward4. In a consolidated-drained triaxial test on a clay that is normally consolidated, the results are as follows: O3 = 15 lb/in 2 (Aoa)f = 11 lb/in? (Aua)f = 7.2 lb/in? a) Determine the consolidated-undrained friction angle. %3D b) Calculate the drained friction angle.arrow_forward
- The following data are given for overconsolidated clay: Gs=2.71 LL=45 Average Pressure=120 kPa e=0.8 thickness=4m Change in Pressure =40 kPa Cs=1/5 Cc Determine the following 1. Compression Index (Ans. 0.315) 2. Pre-consolidation Pressure (Ans. 92.9 kPa) 3. Primary Consolidation Settlement (Ans. 49 mm)arrow_forwardThe following data are given for normally consolidated clay: Thickness=2.6m Primary Cc=0.3 Secondary Cc=0.02 e=0.8 Average Pressure=127 kPa Change in pressure (vertical) =46 kPa Determine the following 1. Primary Consolidation Settlement (Ans. 58.17mm) 2. Secondary Settlement five years after the completion of the primary settlement. The time for completion of primary settlement is 1.5 years. (Ans. 15.4mm)arrow_forwardA clay layer 8 meter thick is subjected to a pressure of 70 kN/m². If the layer has a double drainage and undergoes 50% consolidation (T, = 0.196), in one year, determine the coefficient of consolidation? If the coefficient of permeability is 0.040 m/year, determine the settlement in one %3D year. Use Yw = 9.81 kN/m³.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Fundamentals of Geotechnical Engineering (MindTap...Civil EngineeringISBN:9781305635180Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...Civil EngineeringISBN:9781305970939Author:Braja M. Das, Khaled SobhanPublisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...Civil EngineeringISBN:9781305081550Author:Braja M. DasPublisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...Civil EngineeringISBN:9781337705028Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
Fundamentals of Geotechnical Engineering (MindTap...
Civil Engineering
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...
Civil Engineering
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...
Civil Engineering
ISBN:9781305081550
Author:Braja M. Das
Publisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...
Civil Engineering
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning