Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 5, Problem 5.6P
a)
To determine
Find the classification of the given soil using AASTHO soil classification.
b)
To determine
Find the classification of the given soil using unified soil classification system.
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For an inorganic soil, the following grain size analysis is given
U.S sieve NO.
4
10
20
40
80
200
percent passing
100
90
64
38
18
13
For this soil , L.L = 23 and PL = 19 classify the soil according to:
a- The AASHTO soil classification system.
b- The unified soil classification system . Give group names and group
symbols.
5- Following are the results from the liquid and plastic limit tests for a soil. Liquid limit
test:
Number of blows, N
15
Moisture content (%)
42
20
40.8
28
39.1
Plastic limit test: PL = 18.7%
a. Draw the flow curve and obtain the liquid limit.
b. What is the plasticity index of the soil?
For an inorganic soil, the following grain-size analysis is given:Sieve No. % Passing4 10010 9020 6440 3880 18200 13For this soil, LL = 23% and PL = 19%. Classify the soil according to:a. The AASHTO soil classificationb. The Unified soil classification system
Chapter 5 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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- For an inorganic soil, the following grain-size analysis is given. For this soil, LL = 23 and PL = 19. Classify the soil by using Unified Soil Classification System. Give group names and group symbols.arrow_forward5.3 Classify the following soils using the Unified soil classification system. Give group symbols and group names. Sieve analysis (percent finer) Soil Liquid Plasticity No. No. 4 No. 200 limit limit Comments 1 94 3 NP C = 4.48 and C = 1.22 2 100 77 63 25 3 100 86 55 28 4 100 45 36 22 5 92 48 30 8 6. 60 40 26 4 7 99 76 60 32arrow_forwardQuestion 3: For an inorganic soil the following grain - size analysis is given. U.S sieve Percent analysis 4 passing 100 10 90 20 64 40 38 80 18 200 13 For this soil, LL=23 and Pl=19, classify the soil by using a. AASHTO b. USCS c. Give group name and group symbolsarrow_forward
- Part 3 Classify the following soils using the Unified soil classification system. Give group symbols and group names. Sieve analysis (percent finer) Soil Liquid Plasticity No. No. 4 No. 200 limit limit Comments C, = 4.48 and C, = 1.22 1 94 3 NP 2 100 77 63 25 3 100 86 55 28 4 100 45 36 22 5 92 48 30 Table 5.2 Unified Soil Classification System (Based on Material Passing 76.2-mm Sieve) Group symbol Criteria for assigning group symbols Gravels C, 2 4 and 1s C, s 3 C. 3 PI 7 and plots on or above "A" line (Figure 5.3) Clean Gravels GW More than 50% Less than 5% fines GP of coarse fraction retained on No, 4 sieve Gravels with Fines GM GC Coarse-grained soils More than 12% fines More than 50% Clean Sands Less than 5% fines C, > 6 and 13 PI7 and plots on or above "A" line (Figure 5.3) retained on No. 200 Sands Sw SP sieve 50% or more of coarse fraction Sands with Fines SM passes No. 4 sieve More than 12% fines SC CL PI >7 and plots on or above "A" line (Figure 5.3) PI < 4 or plots below "A"…arrow_forward22. For a soil specimen, the following are given: % passing Sieve No. 4 = 92% % passing Sieve No. 10 = 81% % passing Sieve No. 40 = 78% % passing Sieve No. 200 = 65% LL = 48% PI = 32% a. Classify the soil by the AASHTO system. b. Classify the soil by the USCS.arrow_forward5.4 Classify the following soils by using the Unified soil classification system. Give the group symbols and the group names. Sieve analysis- Percent finer Liquid limit Plasticity index C. Soil No. 4 No. 200 C, 1 70 30 33 21 2 48 20 41 22 3 95 70 52 28 4 100 82 30 19 5 100 74 35 21 6. 87 26 38 18 7 88 78 69 38 8 99 57 54 26 (table continues on next page) apter 5: Classification of Soil Sieve analysis- Percent finer Liquid limit Plasticity index C. Soil No. 4 Νo. 200 9 71 11 32 16 4.8 2.9 10 100 NP 7.2 2.2 11 89 65 44 21 12 90 8 39 31 3.9 2.1 © Cengage Leaming 2014arrow_forward
- For an inorganic soil, the following grain-size analysis is given. Knowing that the liquid limit is 23, and Plastic limit is 19. AASHTO soil classification system. Give the group index. I Unified soil classification system. Give group symbol and group name (specific classification). U.S. sieve no. Percent passing 4 100 10 90 20 64 40 38 80 18 200 13arrow_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_forwardClassify the following soil by the Unified Soil Classification System based on the following information. Soils passing through 2.36 mm sieve = 60.40% Soil passing 75 m sieve = 1.20% D10 0.19 mm D30 0.70 mm D60 2.20 mmarrow_forward
- 3. Classify the following soils using the Unified Soil Classification System. Give group symbols and group names. Sieve Analysis (percent finer) Liquid Plastic Soil No. Comments Limit Limit No. 4 No. 200 1 94 3 NP 100 77 63 25 3 100 86 55 28 Cu = 4.48 4 100 45 36 22 And Cc= 1.22 5 92 48 30 60 40 26 4 7 99 76 60 32arrow_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 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 35arrow_forwardThe grain size curves for soils A, B and C is shown. It is required to classify the soils according to the Unified Soils Classification System. Use the attached Table. SIEVE ANALYSIS Sieve No. Diam. (mm) Percent Passing Soil A Soil B Soil C 3.5 5.66 75 100 90 4 4.760 48 100 75 10 2.000 38 92 60 20 0.840 32 88 50 40 0.420 28 75 30 60 0.250 22 68 25 100 0.149 18 65 16 200 0.074 15 60 10 45 LL 20 PLarrow_forward
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