There are four soil samples used for a laboratory research study. After performing the sieve analysis and hydrometer analysis, the results are plotted and tabulated (as shown in the following slides). Please refer to the Grain Size Distribution Graph and Table to answer the problems below (show your solution). a. Determine the D60, D30, and D10 for Soils 1, 2, 3 and 4. b. Determine the coefficient of uniformity for Soils 1, 2, 3 and 4. C. Determine the coefficient of gradation for Soils 1, 2, 3 and 4. d. Determine the percentage of gravels, sands, and fines according to Unified Soil Classification System for Soils 1, 2, 3, and 4. e. Which one is coarser: Soil 1 or Soil 2? Justify your answer.

There are four soil samples used for a laboratory research study. After performing the sieve analysis and hydrometer analysis, the results are plotted and tabulated (as shown in the following slides). Please refer to the Grain Size Distribution Graph and Table to answer the problems below (show your solution). a. Determine the D60, D30, and D10 for Soils 1, 2, 3 and 4. b. Determine the coefficient of uniformity for Soils 1, 2, 3 and 4. C. Determine the coefficient of gradation for Soils 1, 2, 3 and 4. d. Determine the percentage of gravels, sands, and fines according to Unified Soil Classification System for Soils 1, 2, 3, and 4. e. Which one is coarser: Soil 1 or Soil 2? Justify your answer.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Soil Deposits-origin, Grain-size, And Shape

Section: Chapter Questions

Problem 2.14P

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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

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PROBLEM No. 1 - Graph
SIEVE OPENING IN INCHES
1/2" 1-1/2" 1" 3/4"
U.S.STANDARD SIEVE NUMBERS
HYDROMETER
3/8"
4.
8 10
20
40
60
140
200
0%
100.0%
10%
90.0%
Soil 2
Soil 4
80.0%
20%
70.0%
30%
Soil 1
Soil 3
60.0%
40%
50.0%
50%
60%
40.0%
70%
30.0%
80%
20.0%
90%
10.0%
0.0%
100.00
100%
0.00
10.00
1.00
0. 10
0.01
GRAIN SIZE IN MILLIMETERS
Hint: For D60, D30, and D10
Use interpolation of values from the given table for accurate results.
(Write at least 1 decimal pt. for Soils 1 and 2; at least 2 decimal pts. for Soil 3; at least 4 decimal pts. for Soil 4).
O COLLEGE OF ENGINEERING AND DESIGN
DEPARTMENT OF CIVIL ENGINEERING
OSILLIMAN UNIVERSITY
Lecturer: Dr. Christine Langcuyan-Berquist, R.CE, M.Eng, D.Eng
Long Quiz No. 02: CE 36 - Geotechnical Engineering | 17 March 2022, Thursday
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There are four soil samples used for a laboratory research study. After
performing the sieve analysis and hydrometer analysis, the results are
plotted and tabulated (as shown in the following slides). Please refer to
the Grain Size Distribution Graph and Table to answer the problems below
(show your solution).
a. Determine the D60, D30, and D10 for Soils 1, 2, 3 and 4.
b. Determine the coefficient of uniformity for Soils 1, 2, 3 and 4.
c. Determine the coefficient of gradation for Soils 1, 2, 3 and 4.
d. Determine the percentage of gravels, sands, and fines according to
Unified Soil Classification System for Soils 1, 2, 3, and 4.
e. Which one is coarser: Soil 1 or Soil 2? Justify your answer.
A SILLIMAN UNIVERSITY & COLLEGE OF ENGINEERING AND DESIGN
DEPARTMENT OF CIVIL ENGINEERING
Lecturer: Dr. Christine Langcuyan-Berquist, R.CE, M.Eng, D.Eng
Long Quiz No. 02: CE 36 - Geotechnical Engineering I 17 March 2022, Thursday
MacBook Pro
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5
6
9.
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