Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 2.15P
Repeat Problem 2.14 with the following values: Gs = 2.75, temperature of water = 21°C, t = 88 min, and L = 11.7 cm.
2.14 A hydrometer test has the following result: Gs = 2.65, temperature of water = 26° C, and L = 10.4 cm at 45 minutes after the start of sedimentation (see Figure 2.25). What is the diameter D of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, t = 45 min)?
Figure 2.25 ASTM 152H type of hydrometer placed inside the sedimentation cylinder (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida)
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
In a hydrometer test, the results are as follows:
Gs=2.55
Temperature of water=25 degree Celsius,
and R=41 at 2 hours after the start of sedimentation.
What is the diameter, d, of the smallest-size particles that have settled beyond the zone of measurement at that time?
Please answer this asap
A hydrometer test has the following result: Gs = 2.75, temperature of water = 23°C,
and L = 12.8 cm at 100 minutes after the start of sedimentation (see Figure 1.5).
What is the diameter D of the smallest-size particles that have settled beyond the
zone of measurement at that time (that is, † = 100 min)?
In a hydrometer test, the results are as follows: Gs = 2.60, temperature of water = 24°, and hydrometer reading = 43 at 60 min after the start of sedimentation. What is the diameter, D, of the smallest-size grains that have settled beyond the zone of measurement at that time (that is, t = 60 min)?
Chapter 2 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
Ch. 2 - For a gravel with D60 = 0.48 mm, D30 = 0.25 mm,...Ch. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - The following are the results of a sieve analysis....Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - The following are the results of a sieve and...Ch. 2 - Repeat Problem 2.8 using the following data. 2.8...Ch. 2 - Repeat Problem 2.8 using the following data. 2.8...
Ch. 2 - The grain-size characteristics of a soil are given...Ch. 2 - Repeat Problem 2.11 with the following data. 2.11...Ch. 2 - Repeat Problem 2.11 with the following data. 2.11...Ch. 2 - A hydrometer test has the following result: Gs =...Ch. 2 - Repeat Problem 2.14 with the following values: Gs...Ch. 2 - Three groups of students from the Geotechnical...Ch. 2 - Refer to Problem 2.C.1. Results of the sieve...
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
- The coefficient of permeability of a soil sample was found out in a soil mechanics laboratory by making use of a falling head permeameter. The data used and the test results obtained were as follows: Determine the coefficient of permeability in m/day. a. 10.4b. 2.25c. 5.5d. 6.2arrow_forwardIn a hydrometer test, the results are as follows: Gs=2.85 ; Temperature of water=86 degree Fahrenheit, and R=33 at 2.5 hours after the start of sedimentation . What is the diameter, d, of the smallest-size particles that have settled beyond the zone of measurement at that time? Please answer this asap. For upvote. Thank you very mucharrow_forwardA carefully-weighed 57.6 gram soil sample was dispersed for particle-size analysis using the Bouyoucos hydrometer method. The laboratory was held at a constant temperature of 20 C (68 F). The hydrometer reading after 40 seconds was 21.3 and the hydrometer reading after 8 hours was 17.0. How many grams of particles in the sample were either silt-sized or clay-sized? Your Answer: Answer unitsarrow_forward
- Hydrometer and sieve analysis were conducted on a soil sample. Find D10 Deo uniformity coefficient (Cu), coefficient of curvature (CC) considering the chart given below. Hint: Cu=Deo/D10 and CC=(D3)2 / (D1oxD6o) 100 90 80 70 60 50 40 30 20 10 0,001 CLAY 0,01 SILT 0,1 SAND GRAVEL 10 100 DANE ÇAPI/ PARTICLE SIZE (mm) Dec: (in mm) seç. CC Seç. Cu Seç. D10: (in mm) Seç. GEÇEN DANE YÜZDESİ / PERCENT FINER THAN Darrow_forwardGive me the right solution with clear stepsarrow_forwardQ1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick was tested in an oedometer in a laboratory. At applying pressure (240 kN/m²), the time with dial gauge readings are: Time (min) 0 Settlement (mm) 0 0.25 1 0.22 0.42 4 9 0.6 0.71 16 0.79 36 64 100 0.86 0.91 1.04 d 1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848. Scanned by TapScannerarrow_forward
- Following are the results of a sieve analysis from laboratory activity. Show the necessary calculation and draw the particle size distribution: a.) D10, D30, and D60 b. Uniformity coefficient, Cu c. Coefficient of gradation, Ccarrow_forwardPlease help me to explain the results of the Sieve Analysis for question #5 & explain how I might go about writing a conclusion.arrow_forwardNote: Read the question carefully and give me right solutions according to the question. Phase diagram is mandatory.. Don't miss anything. Thank youarrow_forward
- QUESTION 2 a. The results given in Table 1 were obtained in a particle size distribution test for soil sample received in the laboratory. Table 1 US Sieve No. Size Opening(mm) Weight Retained(g) 4 4.75 0 10 2.0 18.5 20 0.85 53.2 40 0.425 90.5 60 0.25 81.8 100 0.150 92.2 200 0.075 58.5 Pan - 26.5i. Determine the percentage passing each sieve and plot the particle size distribution curve. ii. How much fine-grained soils are in the sample ? iii. Determine the amount of gravel and sand in the sample ? iv. Determine D10, D30, and D60 from the grain-size distribution curve. v. Calculate the uniformity coefficient, Cu. vi. Calculate the coefficient of gradation, Cc. vii. Describe the gradation curve (eg poorly graded)arrow_forwardThe result from the sieve analysis is shown: Calculate the coefficient of uniformity. Determine the percentage of sand? What is the effective size of the sample (in mm).arrow_forwardA project engineer receives a laboratory report with tests performed on a certain soil sample on a particular location. The engineer suspects that one of the measurements is in error. Are the engineer's suspicions correct? Which of these values is wrong, and what If so, so, should be its correct value? Given: *Unit weight of the sample= 18.4 kN/cu.m *Unit weight of solids= 26.1 kN/cu.m *water content= 40% *void ratio= 1.12 *degree of saturation= 95% * %3D the unit weight of the sample in O incorrect, thus the correct value is 17.2 kN/ cu.m the unit weight of the solids is O incorrect, thus the correct value is 25.2 kN/cu.m the water content is incorrect, thus the correct value is 42 % the void ratio is incorrect, thus the correct value is 0.112 the degree of saturation is incorrect, thus the correct value is 0.95 all of the results were correct thuSarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Geotechnical Engineering (MindTap C...Civil EngineeringISBN:9781305970939Author:Braja M. Das, Khaled SobhanPublisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...
Civil Engineering
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Cengage Learning
Hydrogen - the Fuel of the Future?; Author: Real Engineering;https://www.youtube.com/watch?v=iPheEg-K2qc;License: Standard Youtube License