Homework Answers
For soil 3:
% gravel = 100-88 = 12%
% sand = 88%
% fines almost 0%
As per USCS classification : soil is coarse grained also D60 = 2mm ; D30 = 1.2 mm and D10 = 0.3 mm thus Cu = 2/1.2 = 1.667 and Cc= 1.2*1.2/(2*0.3) = 2.4 . Thus soil 3 is "SP" i.e. poorly graded sand.
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2. Grain size distribution for three different soils is given on Figure 1. For SOIL 3,...
CIVL 311 Soil Mechanics Lab HWE2 Problem 2.1 The grain size distribution, liquid limit, and plastic...
CIVL 311 Soil Mechanics Lab HWE2 Problem 2.1 The grain size distribution, liquid limit, and plastic limit for several soils are shown below. • Determine the USCS group symbol and group name for soils through G. • Determine the AASHTO group classification and group index for soils through G. (The #10 sleve has an opening size of 2mm.) • Rank the four soils through G in order of best to worst highway subgrade. Which of the following USCS soils would...
Problem 1(c): Grain size distributions for four soils (i.e., Soils 1,2, 3, and 4) are shown...
Problem 1(c): Grain size distributions for four soils (i.e., Soils 1,2, 3, and 4) are shown below 100 90 2 70 60 50 3 30 20 10 100 10 4.25 .0 01o-0t5 0.01 0.001 0.0001 Diameter (mm) 567 (5 (a) The sand content of soil 1 (b) The gravel content of soil 3: (c) The fines content of soil 4: d) Dso of soil 3: 0.0055 e) The USCS classification of soil 4 if LL 120 80 and PL =...
Soil Mechanics ( please answer right ASAP ) 2. The following are the results of a sieve analysis and a hydrometer an...
Soil Mechanics ( please answer right ASAP )
2. The following are the results of a sieve analysis and a hydrometer analysis Mass Sieve number/grainretained Percent finer size 10 17 20 27 30 Sieve 54 40 60 129 140 90 200 53 0.045mm 12.1 7.8 0.028mm 0.015mm 0.005mm 0.0025mm 0.6 CE 341 Soil Mechanics NJIT Janitha Batagoda Summer 2019 Draw the grain-size distribution curve. a. Determine the percentages of gravel, sand, silt and clay according to the AASHTO system Determine...
Problem 3 - Soil Classification (15 pts) For the following soils, classify each using the USCS...
Problem 3 - Soil Classification (15 pts) For the following soils, classify each using the USCS classification. Plasticity %passing #4 sieve %passing #200 sieve Group Symbol 100 95 Soil clay silt sand gravel Sample A 12 83 5 0 B 4 25 665 C 4 25 71 D5 59 360 E 18 49 303 95 29 Liquid Limit 66. 3 31.4 36 60. 9 49 19.9 6 7.6 23 100 29 1 100 97 64 67 |
2. Grain size distribution curves are illustrated below for four different soils. For each soil sample...
2. Grain size distribution curves are illustrated below for four different soils. For each soil sample determine D10, D30, D50, D60, Cu, cc, %Gravel, %Sand, and %Fines. Also, if possible and appropriate, comment on the gradation characteristics of each sample (i.e. well, poor, uniform, etc.). Recall that you may not be able to determine D1o, D3o, and/or D6o for all of the samples. 100 -O- Soil 1 -- Soil 2 -Soil 3 Soil 4 90 0 80 0 70 60...
The following are the results of a sieve and hydrometer analysis. a. Draw the grain-size distribution...
The following are the results of a sieve and hydrometer analysis. 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 according to the USDA system. d. Repeat part b according to the AASHTO system. e. Determine the percentages of gravel, sand, and fines according to the USCS system
If a soil sample contains 80% sand and gravel and 20 % sit and clay. Its...
If a soil sample contains 80% sand and gravel and 20 % sit and clay. Its liquid limit equal 36 then, it could be classified as (d) None of the above (c) Fine soil (b) Sandy soil (a) Gravelly soil A sieve analysis was conducted on a soil specimen the out put results was as follows material retained on #4 = 25 % and on # 200 = 80 %. The soil could be classified as (c) Coarse grained soil...
The following table shows the lab results of a grain size analysis and Atterberg limits for...
The following table shows the lab results of a grain size analysis and Atterberg limits for an inorganic soil sample (initial total mass=1029) Assume you measured a liquid limit of 40% and plastic limit of 30% for the sample. Sieve Size/No. Equivalent Sieve Size (mm) Mass Retaining(s) Mass Passing (9) Percent Passing 3" 75 11 50 0 3 19 4.75 20 2 20 15 10 No. 60 5 4 4 4 0.003 2 2 2" 3/4" No. 4 No. 10...
and Atterberg's limits (LL and PL.) for five soils are shewm atod answer the following questions Use uniñled s poit beow Assame all pods are inorganic RINES SAND Find MediumCoarse P #200 100 10 1...
and Atterberg's limits (LL and PL.) for five soils are shewm atod answer the following questions Use uniñled s poit beow Assame all pods are inorganic RINES SAND Find MediumCoarse P #200 100 10 10 0 0.001 0.1 0.01 Particle size (mm) Soil Liquid Plastic Limit Limit 80 50 30 NP 40 NP (a) Sand content of soil D: (b) Gravel content of soil E: (c) Fines content for soil B (d) Dso for soil C e) USCS classification of...
Problem 2 (25 points) The sieve analysis of three soils and the liquid and plastic limits...
Problem 2 (25 points) The sieve analysis of three soils and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Soil C c Sieve analysis - Percent finer No.4 No. 10 No. 40 No. 200 70 65 55 36 7162 4 8 11 Atterberg tests Liquid limit Plastic limit C 33 21 32 16 2 4.8 2.9 (a) Classify Soil 1 by the USCS with the group name. (b) Classify Soil 2...
CIVL 311 Soil Mechanics Lab HWE2 Problem 2.1 The grain size distribution, liquid limit, and plastic limit for several soils are shown below. • Determine the USCS group symbol and group name for soils through G. • Determine the AASHTO group classification and group index for soils through G. (The #10 sleve has an opening size of 2mm.) • Rank the four soils through G in order of best to worst highway subgrade. Which of the following USCS soils would...
Problem 1(c): Grain size distributions for four soils (i.e., Soils 1,2, 3, and 4) are shown below 100 90 2 70 60 50 3 30 20 10 100 10 4.25 .0 01o-0t5 0.01 0.001 0.0001 Diameter (mm) 567 (5 (a) The sand content of soil 1 (b) The gravel content of soil 3: (c) The fines content of soil 4: d) Dso of soil 3: 0.0055 e) The USCS classification of soil 4 if LL 120 80 and PL =...
Soil Mechanics ( please answer right ASAP )
2. The following are the results of a sieve analysis and a hydrometer analysis Mass Sieve number/grainretained Percent finer size 10 17 20 27 30 Sieve 54 40 60 129 140 90 200 53 0.045mm 12.1 7.8 0.028mm 0.015mm 0.005mm 0.0025mm 0.6 CE 341 Soil Mechanics NJIT Janitha Batagoda Summer 2019 Draw the grain-size distribution curve. a. Determine the percentages of gravel, sand, silt and clay according to the AASHTO system Determine...
Problem 3 - Soil Classification (15 pts) For the following soils, classify each using the USCS classification. Plasticity %passing #4 sieve %passing #200 sieve Group Symbol 100 95 Soil clay silt sand gravel Sample A 12 83 5 0 B 4 25 665 C 4 25 71 D5 59 360 E 18 49 303 95 29 Liquid Limit 66. 3 31.4 36 60. 9 49 19.9 6 7.6 23 100 29 1 100 97 64 67 |
2. Grain size distribution curves are illustrated below for four different soils. For each soil sample determine D10, D30, D50, D60, Cu, cc, %Gravel, %Sand, and %Fines. Also, if possible and appropriate, comment on the gradation characteristics of each sample (i.e. well, poor, uniform, etc.). Recall that you may not be able to determine D1o, D3o, and/or D6o for all of the samples. 100 -O- Soil 1 -- Soil 2 -Soil 3 Soil 4 90 0 80 0 70 60...
The following are the results of a sieve and hydrometer analysis. 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 according to the USDA system. d. Repeat part b according to the AASHTO system. e. Determine the percentages of gravel, sand, and fines according to the USCS system
If a soil sample contains 80% sand and gravel and 20 % sit and clay. Its liquid limit equal 36 then, it could be classified as (d) None of the above (c) Fine soil (b) Sandy soil (a) Gravelly soil A sieve analysis was conducted on a soil specimen the out put results was as follows material retained on #4 = 25 % and on # 200 = 80 %. The soil could be classified as (c) Coarse grained soil...
The following table shows the lab results of a grain size analysis and Atterberg limits for an inorganic soil sample (initial total mass=1029) Assume you measured a liquid limit of 40% and plastic limit of 30% for the sample. Sieve Size/No. Equivalent Sieve Size (mm) Mass Retaining(s) Mass Passing (9) Percent Passing 3" 75 11 50 0 3 19 4.75 20 2 20 15 10 No. 60 5 4 4 4 0.003 2 2 2" 3/4" No. 4 No. 10...
and Atterberg's limits (LL and PL.) for five soils are shewm atod answer the following questions Use uniñled s poit beow Assame all pods are inorganic RINES SAND Find MediumCoarse P #200 100 10 10 0 0.001 0.1 0.01 Particle size (mm) Soil Liquid Plastic Limit Limit 80 50 30 NP 40 NP (a) Sand content of soil D: (b) Gravel content of soil E: (c) Fines content for soil B (d) Dso for soil C e) USCS classification of...
Problem 2 (25 points) The sieve analysis of three soils and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Soil C c Sieve analysis - Percent finer No.4 No. 10 No. 40 No. 200 70 65 55 36 7162 4 8 11 Atterberg tests Liquid limit Plastic limit C 33 21 32 16 2 4.8 2.9 (a) Classify Soil 1 by the USCS with the group name. (b) Classify Soil 2...
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