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 5.4P
To determine
The classification of each soil based on AASTHO classification and provides the group index for each soil.
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The sieve analysis of four soils and the liquid and plastic limits of the fraction passing
through the No. 40 sieve are given below. Classify the soils using the AASHTO
classification system and give the group indexes. Comment on the suitability of the soils
as subgrade material.
Sieve analysis (percent finer)
Soil No.
No. 10
No. 40
No. 200
Liquid limit
Plastic limit
100
80
58
30
20
2
95
60
20
3
90
76
34
37
25
4
48
28
NP
[Das B. M. Principles of Geotechnical Engineering (7E), pp. 101, 102, 112]
The sieve analysis of ten soils and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below.
Classify the soils using the AASHTO classification system and give the group indexes.
% Passing No. 10: 90
% Passing No. 40: 76
% Passing No. 200: 34
LL = 37
PL = 25
Group classification: Blank 1
Group index: Blank 2
Blank 1
Add your answer
Blank 2
Add your answer
1
The sieve analysis of four soils and the liquid and plastic limits of the fraction passing
through the No. 40 sieve are given below. Classify the soils using the AASHTO
classification system and give the group indexes. Comment on the suitability of the soils
as subgrade material.
Sieve analysis (percent finer)
Soil No.
No. 10
No. 40
No. 200
Liquid limit Plastic limit
100
80
58
30
20
2
95
60
20
90
76
34
37
25
4
48
28
6
NP
Chapter 5 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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- The sieve analysis of ten soils and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. % Passing No. 10: 100 % Passing No. 40: 78 % Passing No. 200: 8 LL = - PL NP (Non-Plastic) Group classification: Blank 1 Group index: Blank 2 Blank 1 Add your answer Blank 2 Add your answerarrow_forwardQuestion 5 The sieve analysis of soil and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. % Passing No. 10: 98 % Passing No. 40: 80 % Passing No. 200: 50 LL = 38 %3D PL = 29 Group classification: Blank 1 Group index: Blank 2arrow_forwardThe sieve analysis of three soils and the liquid and plastic limits of the fraction passing No. 40 sieve are given in the table below. Use AASHTO Classification System.arrow_forward
- Question 3 The sieve analysis of soil and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. % Passing No. 10: 48 % Passing No. 40: 28 % Passing No. 200: 6 LL = - %3D PL = NP Group classification: Blank 1 Group index: Blank 2arrow_forwardThe sieve analysis of six soils and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below in Table 1. Classify the soils by the AASHTO classification system and give the group index for each soil. Table 1: Sieve analysis, liquid and plastic limits of soil Sieve analysis-Percent finer Soil No. 10 No. 40 No. 200 Liquid limit Plastic Limit 1 98 80 50 38 29 100 92 80 56 23 100 88 65 37 22 4 85 55 45 28 20 92 75 62 43 28 6. 97 60 30 25 16arrow_forwardThe result of sieve analysis of three soils is given next. It is required to classify these soils according to the AASHTO Classification System. Use the attached AASHTO Classification of Highway Subgrade Materials Table. (a) Classification of Soil A. (b) Classification of Soil B. (c) Classification of Soil C. Sieve Analysis Results for Situation 9 Sieve Analysis Sieve Diameter, Percent Passing Number mm. 4.76 90 100 100 8. 2.38 84 90 100 10 2. 72 77 98 20 0.84 66 59 91 40 0.42 58 50 85 60 0.25 50 42 79 100 0.149 44 36 70 200 0.074 38 33 LL 42 46 47 PL 23 29 24 63arrow_forward
- 2. Classify the following soils by the AASHTO classification system. Give the group index for each soil. Show the step-by-step process of classifying each soil using the AASHTO table. Soil A B C Sieve analysis- Percent finer No. 40 No. 10 90 86 42 92 90 28 68 48 No. 200 32 8 12 30 22 Liquid 28 NP 18 42 Plasticity index 9 in oarrow_forward1. Sieve analysis data for two inorganic soils are provided in Table 1. Soil 1 has LL = 64 and PL = 38. Soil 2 has LL = 26 and PL =18. To plot the particle size distribution curves for Soils 1 and 2 using the attached sheet. Determine the effective grain size, D10 for Soil 2. Determine the USCS designation for each soil. List step by step how you make your choices. Table 1. Sieve Analysis Data. Sieve No. 14 10 20 40 60 100 200 Mesh opening (mm) 4.750 2.000 0.850 98 0.425 93 0.250 88 0.150 83 0.075 77 Soil 1 % finer 100 100 Soil 2 % finer 100 90 64 38 29 21 11arrow_forwardThe sieve analysis of (2) soils and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given in the folllowing table. 1. Classify the soils according to Unified soil classification system (USCS) given the group symbol and name 2. Classify the soils according to AASHTO sistem and find the group index (GI) D10 Soil A B 4 98 100 Seive No % passing 20 40 50 28 100 99 10 86 100 60 100 200 18 14 10 95 90 73 Attereberg limits L.L P.L N.P 27 55 D30 D60 1.5 0.075 0.43 0.001 0.003 0.053arrow_forward
- 2. The sieve analysis of ten soils and liquid and plastic limits of the fraction passing through the No. 40 Sieve are given below. Classify the soils using AASHTO classification system and give the group indexes. Sieve Analysis (percent finer) Liquid Plastic Soil No. Limit 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 92 75 62 43 28 48 28 NP 87 62 30 32 24 90 76 34 37 25 100 78 NP 10 92 74 32 44 35 Co 6.arrow_forward5.2 The sieve analysis of ten soils and the liquid and plastic limits of the fraction pass- ing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. 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 NP 7 87 62 30 32 24 8 90 76 34 37 25 100 78 8 NP 10 92 74 32 44 35arrow_forwardClassify the soil sample using USDA Textural Classification System if the sample has the following particle size distribution. Gravel = 18 % Silt = 11 % Sand = 66 % Clay = 5 % O Loamy Sand O sity Loam O Sandy Loam O sity Clayarrow_forward
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