7. Classify the following soils according to the AASHTO Soil Classification with Group Index (GI) Soil A B No. 4 95 100 Percent passing U.S. sieve No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 86 65 52 46 38 25 98 95 88 82 75 65 LL PL 38 65 22 58

7. Classify the following soils according to the AASHTO Soil Classification with Group Index (GI) Soil A B No. 4 95 100 Percent passing U.S. sieve No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 86 65 52 46 38 25 98 95 88 82 75 65 LL PL 38 65 22 58

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter4: Soil Classification

Section: Chapter Questions

Problem 4.1P: State whether the following are true or false. a. In the AASHTO classification Table 4.1, the soils...

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Concept explainers

Soil classification and characteristics

Soil classification is a method of categorizing soil based on its properties, types, and uses. The motive of soil classification is to arrange various types of soils and divide them into groups for various engineering and agricultural purposes. Soil classification is carried out by various agencies as per their purposes. From an engineering perspective, soil classification is done to find out the suitability of soil for various construction purposes like the construction of dams, foundations, highways, infrastructures, and so on. For engineering purposes, the soil is classified by the following systems:

Question

7. Classify the following soils according to the AASHTO Soil Classification with Group
Index (GI)
Soil
A
B
No. 4
95
100
Percent passing U.S. sieve
No. 10 No. 20 No. 40 No. 60 No. 100 No. 200
86
65
52
46
38
25
98
95
88
82
75
65
LL PL
38
65
22
58

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Classify the following soils by the AASHTO classification system. Description Soil A Soil B Soil C Percent finer than No.10 sieve 83 100 48 Percent finer than No.40 sieve 48 92 28 Percent finer than No.200 sieve 20 86 6 Liquid Limit 20 70 - Plasticity Index 5 32 Nonplastic
Problem D: For problems 14 to 17. Classify the following soils by the AASHTO classification System. Description A D Percent finerthan No. 4 sieve 100 | 92 100 94 Percent finerthan No. 10 sieve 100 85 80 80 Percent finerthan No. 40 sieve 96 71 78 51 Percent finerthan No. 200 sieve 72 56 59 15 Liquid Limit Plasticity Index 16) Soil A is ? 58 35 42 26 23 19 13 12 a) A-7-5(19) b) A-2-6 (0) c) A-7-6 (18) d) A-7-5 (18) 17) Soil Bis ? a) A-6(13) b) A-7-5(0) c) A-6 (7) d) A-6 (8) 18) Soil Cis ? a) A-7-6(5) 19) Soil D is ? a) A-2-6(2) b) A-7-6 (8) c) A-7-6 (7) d) A-7-6(6) b) A-3 (0) c) A-2-6 (0) d) A-2-6 (2)
Problem D: For problems 14 to 17. Classify the following soils by the AASHTO classification System. Description Percent finerthan No. 10 sieve A B C 83 100 48 90 Percent finerthan No. 40 sieve 48 92 28 76 Percentfinerthan No. 200 sieve 20 86 34 Liquid Limit Plasticity Index 20 70 37 12 plastic 32 Non- 14) Soil A is? a) A-2-4(0) b) A-2-6 (0) c) A-2-7 (1) d) A-1-b (0) 15) Soil Bis ? a) A-7-5(13) b) A-1-b(0) c) A-7-5 (16) d) A-7-5 (33) 16) Soil Cis ? a) A-6(5) b) A-7-6 (8) c) A-6 (2) d) A-1-a (0) 17) Soil D is ? a) A-6 (2) b) A-1-a (0) c) A-7-6 (4) d) A-2-6 (0)
Soil Classifications Classify the following soils by the AASHTO classification system. Description Soil A Soil B Soil C Percent finer than No. 10 sieve 83 100 48 48 92 28 Percent finer than No. 40 sieve 20 86 6 Percent finer than No. 200 sieve 20 70 Liquid limit Plasticity index 32 Nonplastic
PROBLEM No. 2 Classify the following soils by the AASHTO classification system: Soil A Soil B Soil C Percent finer than #10 sieve 83 100 48 Percent finer than #40 sieve 48 90 28 Percent finer than #200 sieve 20 86 6 Liquid limit Plasticity Index 20 65 5 32 non plastic
Classify the following soils by the AASHTO classification system. Description Percent finer than No. 10 sieve Percent finer than No. 40 sieve Percent finer than No. 200 sieve Soil A Soil B Soil C 100 92 94 82 38 81 85 51 52 Liquid limit Plastic Limit 42 29 43 23 16 34 Table 3.1: Classification of Highway Subgrade Materials General class fication Granular materials (35% or less of total sample passing No. 200) A-2 A-1 Group classification Sieve analysis (percentage passing) No. 10 No. 40 No. 200 Characteristics of fraction passing No. 40 Liquid limit Plasticity index Usual types of significant constituent materials A-1-a A-1-b A-3 A-2-4 A-2-5 A-2-6 A-2-7 50 max. 30 max. 50 max. 51 min. 15 max. 25 max. 10 max. 35 max. 35 max. 35 max. 35 max. 40 max. 41 min. 40 max. 41 min. 10 max. 10 max. 11 min. 11 min. 6 max. NP Stone fragments, gravel, and sand Fine sand Sity or clayey gravel and sand General subgrade rating Excellent to good What is the classification of Soil A? O A-5(3) A-7-5(3) O…
Classify the following soils by the Unified soil classification system. Give the group na soil Soil 1 2 Sieve analysis (percentage finer) Liquid Plastic No. 4 No. 200 limit limit 98 28.5 33.2 22.6 95 10 30 22 D10 D30 8 D60 0.085 0.12 0.135 Q1)
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Question 14 Classify the following soils using the Unified soil classification system. Give the group symbol. No. 4 = 100 No. 200 = 77 LL = = 63 PL 25 %D A) CL В ML MH CH
Classify the following soils by AASHTO classification system. Percent finer than (sieve analysis) Liquid Limit Plasticity Index Soil No. 4 No. 10 No. 40 No. 200 1 95 82 55 41 32 12 94 80 51 15 26 12 Silty-Clay Materials (more than 35 % passing No. 200 sieve) A-7 General Granular Materials Highly Organic Classification (35 % or less passing No 200 sieve) A-1 A-2 Group Classification A-1-a A-1-b A-3 A-2-4 A-2-5 A-2-6 A-2-7 A-4 A-5 A-6 A-7-5 A-8 A-7-6 Sieve Analysis percent passing: # 10 < 50 # 40 # 200 S 30 5 50 s 51 <15 25 $10 <35 35 s 35 35 236 2 36 2 36 236 Characteristics of fraction passing #40 Liquid limit Plasticity index < 40 241 40 241 NP3 <40 241 40 241 2 11 11 10 <10 211 211 < 10 <6 Stone <10 Usual types of signifcant constituent materials fragments; gravel and sand Fine Peat or sand Silty or clayey gravel and sand Sity soils Clayey soils muck General ratins as Excellent to good Fair to Poor Unstable subgrade VI VI VI VI VI
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