Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 2.9P
Redo Problem 2.7 according to the AASHTO system (Table 2.3).
2.7 The particle characteristics of a soil are given below. Draw the particle-size distribution curve and find the percentages of gravel, sand, silt, and clay according to the MIT system (Table 2.3).
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8. a) According to the results of a sieve analysis in Table 1 below, plot the sieve analysis graph and construct a soil particle-size distribution curve.
Table 1
Sieve Size (mm)
Mass of retained (g)
4.75
0
2.00
40
0.850
60
0.425
89
0.250
140
0.180
122
0.150
210
0.075
56
Pan
12
b) Determine i)Effective size D10, D30, and D60 ii)Uniformity coefficient, Cu iii)Coefficient of curvature, Cc iv)Classify the soil based on the graph
7. Following details regarding the particle size distribution and other index properties pertinent to the classification of soil. Choose three soils and classify
each soil according to USCS and AASHTO classification systems. When necessary, assume Cu = 4.48 and C = 1.22. Your solution may be presented in similar
form as what was included in your module 4.
Sieve Analysis (Percent Finer)
Soil No
Liquid Limit
Plastic Limit
No. 10
No. 40
No. 200
1
98
80
50
38
29
2
100
92
80
56
23
3
100
88
65
37
22
4
85
55
45
28
20
5
92
75
62
43
28
6
48
28
6
N.A.
NP
7
87
62
30
32
24
8
90
76
34
37
25
9
100
78
8
N.A.
NP
10
92
74
32
44
35
5. The results of a particle size analysis of a soil are given in the following table. The Atterberg
limit tests yielded LL=62, PL = 20.
Sieve Opening (mm)
Percent Coarser by Weight
Sieve No.
4.75
5.1
10
2.00
10.0
20
0.85
0.425
40.7
40
70.2
84.8
90.5
60
0.25
100
0.15
200
Pan
0.075
100
a) Draw the gradation curve for this soil
b) Determine the uniformity coefficient and the coefficient of curvature
c) Classify the soil using USCS and ASSHTO
d) Rate this soil as a subgrade for highway construction
Chapter 2 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
Ch. 2 - Prob. 2.1PCh. 2 - Following are the results of a sieve analysis: a....Ch. 2 - For a soil, given: D10 = 0.08 mm D30 = 0.22 mm D60...Ch. 2 - For a soil, given: D10 = 0.08 mm D30 = 0.22 mm D60...Ch. 2 - Repeat Problem 2.2 with the following results of a...Ch. 2 - Repeat Problem 2.2 with the following results of a...Ch. 2 - The particle characteristics of a soil are given...Ch. 2 - Redo Problem 2.7 according to the USDA system...Ch. 2 - Redo Problem 2.7 according to the AASHTO system...Ch. 2 - In a hydrometer test, the results are as follows:...
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- The particle characteristics of a soil are given below. Draw the particle-size distribution curve and find the percentages of gravel, sand, silt, and clay according to the MIT system (Table 2.3).arrow_forward7. Following details regarding the particle size distribution and other index properties pertinent to the classification of soil. Choose three soils and classify each soil according to USCS and AASHTO classification systems. When necessary, assume Cu = 4.48 and Cc = 1.22. Your solution may be presented in similar form as what was included in your module 4. Sieve Analysis (Percent Finer) Soil No Liquid Limit Plastic Limit No. 10 No. 40 No. 200 98 80 50 38 29 2 100 92 80 56 23 100 88 65 37 22 4 85 55 45 28 20 92 75 62 43 28 6 48 28 N.A. NP 7 87 62 30 32 24 8 90 76 34 37 25 100 78 8 N.A. NP 10 92 74 32 44 35arrow_forwardSITUATION 1 A sample of soil has the following grain- size characteristics given below. Determine the following: (a) Percentage of silt. (b) Soil classification using the Triangular Classification Chart. (c) Determine the activity classification if the plasticity index is 34%. Grain- size for Situation 1 SIZE (mm) PERCENT PASSING 2.000 100 0.075 74 0.050 60 0.005 32 0.002 15arrow_forward
- 2. The sieve analysis data for a granular soil are given below. % passing 19 mm sieve =100 % passing 4.75 mm (4 sieve) = 61 % passing 2 mm = 45 % passing 0.075 mm (200 sieve) = 16 % passing 0.06 mm (4 sieve) = 13 % passing 0.05 mm ( sieve) = 8 % passing 0.002 mm (4 sieve) = 5 What are the percentages of gravels, sands and fines within this soil, based on the Unified Soil Classification System (USCS), AASHTO, USDA and MIT Standards?,arrow_forward1. From the given soil samples below, (a) compute the effective size, uniformity coefficient, and coefficient of gradation (b) Determine the percent of gravel, sand, silt and clay of soil A using AASHTO Sieve size. 0.425 0.033 0.018 0.01 0.0062 0.0035 0.0018 0.001 Soil A Passing Finer (%) 100 90 80 70 60 50 40 35arrow_forwardThe following are the results of a sieve and hydrometer analysis. Analysis Sieve number/grain size Percent finer Sieve 40 100 80 97 170 92 200 90 Hydrometer 0.04 mm 74 0.015 mm 42 0.008 mm 27 0.004 mm 17 0.002 mm 11 a. Draw the grain-size distribution curve. b. Determine the percentages of gravel, sand, silt and clay according to the MIT system. c. Repeat Part b according to the USDA system. d. Repeat Part b according to the AASHTO system.arrow_forward
- Q5: For the particle size distribution curve in the figure below, determine the following: 1- The percentage of Gravel(G), Sand(S), Silt (M), and Clay (C) of soil A, B, and C 2- Determine the uniformity coefficient Cu, and the coefficient of gradation Cc of soil A Ce 2420 6.002 D0: Panicle Diameter tmm)arrow_forwardPlease answer this problem using the AASHTO system. NOT the MIT system. Thank you! The particle characteristics of a soil are given below. Draw the particle-size distribution curve and find the percentages of gravel, sand, silt, and clay Size (mm) Percent Finer 0.850 100.0 0.425 92.1 0.250 85.8 0.150 77.3 0.075 62.0 0.040 50.8 0.020 41.0 0.010 34.3 29.0 0.006 0.002 23.0arrow_forwardQuestion Answer Calculate the percentage of sand when the 40 second hydrometer reading is 35 g; assume a 60 g soil sample is used. Calculate the percentage of clay when the 8 hour hydrometer reading is 8 g; assume a 60 g soil sample is used. If 280 g of soil of particles less than 2 mm in diameter |contains 50 g of particles less than 0.002 mm in diameter, what is the percent of clay in this soil?arrow_forward
- Plot sieve size (x-axis) against % finer. Calculate for D60mm, D30mm and D10mm. Find the percentage of gravel, sand and fines. Find the CU (Coefficient of uniformity) and CC (coefficient of curvature). How does the particle size distribution of granular materials affect the properties of soil such as bulk density, permeability, and physical stability? Note the following: = D60/D10 and CC= D302 /D60 ×D10 See attached picture for informationarrow_forward2.8 2.7 The following are the results of a sieve and hydrometer analysis. Sieve number/ grain size Analysis Sieve Hydrometer Analysis Sieve 40 80 170 200 0.04 mm 0.02 mm 0.01 mm 0.005 mm 0.0015 mm Hydrometer Sieve number/ grain size Percent finer than a. Draw the grain-size distribution curve. b. Determine the percentages of gravel, sand, silt, and clay according to the MIT system. c. Repeat Part b according to the USDA system. d. Repeat Part b according to the AASHTO system. Repeat Problem 2.7 with the following data: 20 30 40 60 80 200 0.05 mm 0.03 mm 0.015 mm 0.006 mm 0.004 mm 0.0015 mm 100 96 85 80 59 39 26 15 8 Cengage Learning 2014 Percent finer than 100 96 90 76 65 34 27 19 11 7 6 5 Ⓒ Cengage Learning 2014arrow_forwardA soil sample has the following size distribution; 4 to 2mm = 17%, 2 to 0.05 mm = 12%, 0.5 to 0.005 mm = 22% 0.005 to 0.002 mm = 10% <0.002 mm = 39% what are the percentages of clay, silt, and sand? Using USDA calssification what is the modifier and tetural classificationarrow_forward
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