Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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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)
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HOMEWORK (1) For the plan and section of the wall shown below, calculate the
following: -
1. the length of footing excavation
2, the length of bricks work under D.P.C for each step
by using:
a) Centre line method
b) Long wall-short wall method
عرف الحق
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D.P.C
1.00 m
Section
0.24 m
0.36 m
0.48 m
15 m
r
N
8 m
5 m
Plan
F
following:
1. the length of footing excavation
2. the length of bricks work under D.P.C for each step
by using:
a) Centre line method
b) Long wall-short wall method
D.P.C
1.00 m
0.24 m
0.36 m
y0.48 m
15 m
Section.
N
A
k
W
8 m
5 m
زف الحو
不
Z
Plan
ate the
L
Page 3
3.5) Using the Method of Components, determine the magnitude, the direction,
and the sense of the resultant for the coplanar concurrent force system shown below.
Y
76 lbs
10 kips
4
3
0
Y
12 kips
5
12
> x
60 lbs
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...
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