Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Question
Chapter 2, Problem 2.12P
To determine
Calculate the percentages of gravels, sands, and fines in the soils A and B based on the 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.
Classify 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 mm
1.9 Classify the following soils (Table P1.2) according to the unified soil classification system
(Choose ONLY three samples).
Table P1.2
Soil
ABCDEE
No.4 No. 10 No. 20 No. 40 No. 60 No. 100 No. 200
94
63
80 6.5
86
50
49
60
100 100
98
98
Percent passing U.S. sieve
D 100
E 80
40
48
98
10
55
28
38
31
93
7
40
18
26
25
88
5
35
14
18
18
83
3
30
20
10
8
77
LL PL
NP
28 18
NP
NP
NP
63 48
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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- Question 5 Classify the following soils using the Unified soil classification system. Give group symbols and group names. % Passing No. 4: 100 % Passing No. 200: 86 LL = 55 PL = 28 Group Symbol: Blank 1 Group name: Blank 2 Blank 1 Add your answer Blank 2 Add your answerarrow_forwardFor 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 systemarrow_forwardPROBLEM No. 2 The properties of six different clayey soils are shown below based from a series of Atterberg Limit tests and Hydrometer tests. Complete the table by determining the plasticity index, PI, and activity, A of each soil. Also, classify each soil based on the activity, A (inactive, normal, active). Lastly, determine the probable clay mineral composition (Kaolinite, Illite, Montmorillonite) of each soil based on the activity, A. % clay Activity Classification Probable Clay Mineral Composition LL PL Activity Soil PI % % fraction A 1 100 25 50 2 88 64 72 3 77 23 92 4 120 35 60 75 10 85 6. 90 27 58arrow_forward
- Please need to solve all questions : Answer the following 1- The field bulk density of coarse grained soils can be determined by. 2- Density of soil changes with depth of soil? (a) True b) False 3- What are the methods to calculate the field density of soil? 4- The field bulk density of clayey soil can be determined by................. 5- Different soils have different unit weights (a) True (b) False (c) Cannot be answered c) may be d) none)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_forwardProblems 5.1 Classify the following soil using the U.S. Department of Agriculture textural classi- fication chart. Soll A B с D E Soll 9 Soll A B с D E 10 11 12 Particle-size distribution (%) Sand 20 55 45 50 70 5.3 Classify the following soils by the AASHTO classification system. Give the group index for each soil. No. 10 98 90 84 100 80 71 100 89 90 Soll 1 2 3 95 4 100 5 100 6 87 7 88 8 99 Silt 20 5 Sleve analysis- Percent finer No. 40 80 74 71 35 15 15 11 Sleve analysis- Percent finer No.4 No. 200 70 30 48 20 70 82 74 26 Sleve analysis- Percent finer No. 4 No. 200 2 65 8 5.4 Classify the following soils by using the Unified soil classification system. Give the group symbols and the group names. 78 68 Clay 60 40 20 35 15 78 57 No. 200 72 58 64 82 48 44 39 Liquid limit 32 33 41 52 30 Liquid limit Liquid Plasticity limit Index 35 38 69 54 52 38 41 32 30 Plasticity Index 16 NP 21 31 21 22 28 19 21 18 38 26 Plasticity Index 21 12 14 12 11 3.9 C₂ C₂ C₂ Ce 4.8 2.9 7.2 2.2 2.1 (table…arrow_forward
- The sieve analysis data for a granular soil are given below. % passing or finer 19 mm sieve = 100%% passing or finer 4.75 mm (4 sieve) = 61%% passing or finer 0.075mm (200 sieve) = 16% What are the percentages of gravels, sands and fines within this soil, based on the Unified Soil Classification System?arrow_forward1. Classify the following soil using the U.S. Department of Agriculture textural classification chart. Particle Size Distribution (%) Soil Sand Silt Clay A 20 20 60 55 40 C 45 35 20 D 50 15 35 E 70 15 15arrow_forwardDetermine the percentage of Clays based on AASHTO Soil classification system for the grain-size characteristics of a soil are given as follows: Round off your answer to two (2) decimal places. Size (mm) Percent Finer 0.850 100.00 0.425 92.10 0.250 85.80 0.150 77.30 0.075 62.00 0.040 50.80 0.020 41.00 0.010 34.30 0.006 29.00 0.002 23.00arrow_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_forward5.4 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 by the AASHTO classification system and give the group index for each soil. Soil 1 2 3 4 5 6 7 8 9 10 Sieve analysis-Percent finer No. 10 No. 40 No. 200 98 100 100 85 92 97 100 94 83 100 80 92 88 55 75 60 55 80 48 92 K 50 80 65 45 62 30 8 63 20 86 Liquid limit Plasticity index 38 56 37 28 43 25 40 20 70 29 23 22 20 28 16 NP 21 15 38arrow_forwardNote: Give me both solutions with clear steps. A) The particle size distribution for Soil 1 is shown. What are the USCS group symbol and group name of this soil? B) The particle size distribution for Soil 2 is shown. The soil is inorganic and has the following Atterberg Limit values: LL=34 and PL=29. What are the USCS group symbol and group name for this soil?arrow_forward
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