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 с D E Sieve analysis- Percent finer No. 40 No. 10 90 86 42 92 90 74 56 28 68 48 No. 200 32 8 12 30 22 Liquid limit 28 NP 18 42 31 Plasticity index 9 13 18 5

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 с D E Sieve analysis- Percent finer No. 40 No. 10 90 86 42 92 90 74 56 28 68 48 No. 200 32 8 12 30 22 Liquid limit 28 NP 18 42 31 Plasticity index 9 13 18 5

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter2: Origin Of Soil And Grain Size

Section: Chapter Questions

Problem 2.12P: Repeat Problem 2.11 with the following data. 2.11 The grain-size characteristics of a soil are given...

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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 o
• Particle size analyses were carried out on two soils-Soil A and Soil B-and the particle size distribution curves are shown in Figure % Finer Clay 100 90 80 70 60 50 40 30 20 10 0 0.001 + Silt Soil A Sand Soil B 0.01 0.1 1 Particle size (mm) - log scale Gravel 10 Soil A B 1. Classify these soils according to USCS and ASTM-CS 2. Is either of the soils organic? LL 26 (oven-dried; assume same for not dried) Nonplastic PL 18
Problem 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. Soll No. 567699AWN. 4 8 10 No. 10 98 100 100 85 92 48 87 90 100 92 Sleve analysis (percent finer) No. 40 80 92 88 55 75 28 62 76 78 74 No. 200 50 80 65 45 62 6 30 34 8 32 Liquid limit 38 56 37 28 43 32 37 44 Plastic limit 29 23 22 20 28 NP 24 25 NP 35
Percentage finer by weight 100% 80% 60% 40% 20% 0% 0.001 (c) Soil J (d) Soil L H 0.010 Ma 1.000 Soil Sample ID H I J #200 L 0.100 Particle size (mm) 46 37 #4 Liquid Limit Plastic Limit 60 26 Non plastic 34 18 10.000 AASHTO Classification: Classify the following soils using AASHTO criteria. (a) Soil H (b) Soil I 3° 100.00
Classify the following soils by the Unified (USCS) and AASHTO methods. Where necessary, assume CU = 7 and Cc=2.5. Soil No. 2 62 % Passing Soil No. 1 # 4 95 41 #10 88 # 40 33 11 81 2676 #200 65 21 LL 53 12 PL 36 USCS AASHTO Usily
2. Classify the foloowing soils according to the AASHTO classification system and give the group indices. Soil A B C D E No. 10 92 90 100 72 100 Sieve Analysis, % Finer No. 40 81 70 92 61 85 No. 200 52 34 78 33 71 Liquid Limit 29 37 61 35 55 Plasstic Limit 16 30 26 22 21
Repeat Problem 2.11 with the following data. 2.11 The grain-size characteristics of a soil are given in the following table. 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 using the USDA system. d. Repeat Part b using the AASHTO system.
10 11 percent. Classify the using the textural classification chart: a) Compute the percentage of clay. b). Compute the percentage of silt. c) Classify the type of soil. Problem: soil to be used as highway Classify the given subgrade material using the AASHTO method by using the attached table for its classification. Sieve analysis % finer No. 10 sieve = 47% %3D No.40 sieve = 28% No.200 sieve = 9% Plasticity for the minus No. 40 fraction Liquid limit 0 Plasticity index = 2%
4. 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 Plasticity Index 20 70 32 Nonplastic
The 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 63
The 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 0.053
Question 4 Classify the following soils using the Unified soil classification system. Give group symbols and group names. % Passing No. 4: 99 % Passing No. 200: 76 LL = 60 PL = 32 %3D Group Symbol: Blank 1 Group name: Blank 2 Blank 1 Add your answer Blank 2 Add your answer