There are four soil samples used for a laboratory research study. After performing the sieve analysis and hydrometer analysis, the results are plotted and tabulated (as shown in the following slides). Please refer to the Grain Size Distribution Graph and Table to answer the problems below (show your solution). a. Determine the D60, D30, and D10 for Soils 1, 2, 3 and 4. b. Determine the coefficient of uniformity for Soils 1, 2, 3 and 4. C. Determine the coefficient of gradation for Soils 1, 2, 3 and 4. d. Determine the percentage of gravels, sands, and fines according to Unified Soil Classification System for Soils 1, 2, 3, and 4. e. Which one is coarser: Soil 1 or Soil 2? Justify your answer.

There are four soil samples used for a laboratory research study. After performing the sieve analysis and hydrometer analysis, the results are plotted and tabulated (as shown in the following slides). Please refer to the Grain Size Distribution Graph and Table to answer the problems below (show your solution). a. Determine the D60, D30, and D10 for Soils 1, 2, 3 and 4. b. Determine the coefficient of uniformity for Soils 1, 2, 3 and 4. C. Determine the coefficient of gradation for Soils 1, 2, 3 and 4. d. Determine the percentage of gravels, sands, and fines according to Unified Soil Classification System for Soils 1, 2, 3, and 4. e. Which one is coarser: Soil 1 or Soil 2? Justify your answer.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Soil engineering for highway design

Soil engineering is a part of geotechnical engineering that deals with the characteristics of soil. It also helps to understand the behavior of the soil in different conditions. The basic concepts of soil are studied to check the strength, compressibility, and porosity of the soil. This makes soil engineering an important topic for civil engineering.

Question

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PROBLEM No. 1 - Graph
SIEVE OPENING IN INCHES
1/2" 1-1/2" 1" 3/4"
U.S.STANDARD SIEVE NUMBERS
HYDROMETER
3/8"
4.
8 10
20
40
60
140
200
0%
100.0%
10%
90.0%
Soil 2
Soil 4
80.0%
20%
70.0%
30%
Soil 1
Soil 3
60.0%
40%
50.0%
50%
60%
40.0%
70%
30.0%
80%
20.0%
90%
10.0%
0.0%
100.00
100%
0.00
10.00
1.00
0. 10
0.01
GRAIN SIZE IN MILLIMETERS
Hint: For D60, D30, and D10
Use interpolation of values from the given table for accurate results.
(Write at least 1 decimal pt. for Soils 1 and 2; at least 2 decimal pts. for Soil 3; at least 4 decimal pts. for Soil 4).
O COLLEGE OF ENGINEERING AND DESIGN
DEPARTMENT OF CIVIL ENGINEERING
OSILLIMAN UNIVERSITY
Lecturer: Dr. Christine Langcuyan-Berquist, R.CE, M.Eng, D.Eng
Long Quiz No. 02: CE 36 - Geotechnical Engineering | 17 March 2022, Thursday
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PERCENT FINER BY WEIGHT
L.
PERCENT COARSER BY WEIGHT

There are four soil samples used for a laboratory research study. After
performing the sieve analysis and hydrometer analysis, the results are
plotted and tabulated (as shown in the following slides). Please refer to
the Grain Size Distribution Graph and Table to answer the problems below
(show your solution).
a. Determine the D60, D30, and D10 for Soils 1, 2, 3 and 4.
b. Determine the coefficient of uniformity for Soils 1, 2, 3 and 4.
c. Determine the coefficient of gradation for Soils 1, 2, 3 and 4.
d. Determine the percentage of gravels, sands, and fines according to
Unified Soil Classification System for Soils 1, 2, 3, and 4.
e. Which one is coarser: Soil 1 or Soil 2? Justify your answer.
A SILLIMAN UNIVERSITY & COLLEGE OF ENGINEERING AND DESIGN
DEPARTMENT OF CIVIL ENGINEERING
Lecturer: Dr. Christine Langcuyan-Berquist, R.CE, M.Eng, D.Eng
Long Quiz No. 02: CE 36 - Geotechnical Engineering I 17 March 2022, Thursday
MacBook Pro
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&
5
6
9.
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T
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EXERCICE 4 Sieve analysis was performed from which the results were summarized in the following table. 1 a) Plot the grain size curve b) Calculate the coefficient of uniformity and the coefficient of gradation. c) Give a first idea about the classification of such soil. U.S. Sieve Opening (mm) Mass retained in each sieve (gr) 1 20 4 4.750 10 2.000 40 20 0.850 60 40 0.425 89 60 0.250 140 80 0.180 122 100 0.150 210 200 0.075 56 Pan 12
The following are the results of a sieve analysis: a. Determine the percent finer than each sieve and plot a grain-size distribution curve. b. Determine D10, D30, and D60 from the grain-size distribution curve. c. Calculate the uniformity coefficient, Cu. d. Calculate the coefficient of gradation, Cc. e. Plot the particle-size distribution curve Answer in complete solution
1. The results of particle analysis of a soil sample are shown in the table below. Try to plot the particle gradation curve, determine the Cu and Cc of the soil, and evaluate the gradation of the soil. Particle size (mm) Particle group content (%) >2 12 2~0.5 26 0.5~0.25 24 0.25~0.1 21 0.1-0.05 7 <0.05 10
5. The results of a particle size analysis of a soil are given in the following table. The Atterberg limit tests yielded LL=62, PL = 20. Sieve Opening (mm) Percent Coarser by Weight Sieve No. 4.75 5.1 10 2.00 10.0 20 0.85 0.425 40.7 40 70.2 84.8 90.5 60 0.25 100 0.15 200 Pan 0.075 100 a) Draw the gradation curve for this soil b) Determine the uniformity coefficient and the coefficient of curvature c) Classify the soil using USCS and ASSHTO d) Rate this soil as a subgrade for highway construction
200 pan 44 22
The following are the results of a sieve analysis: a. Determine the percent finer than each sieve and plot a grain-size distribution curve. b. Determine D10, D30, and D60 from the grain-size distribution curve. c. Calculate the uniformity coefficient, Cu. d. Calculate the coefficient of gradation, Cc. e. Plot the particle-size distribution curve
II. The grain size curve for soil sample is shown. 100 90 80 70 60 50 40 30 20 10 0 10 4. 5. 6. 1 Particle Size, mm. What is the effective grain size of the soil? What is the value of D60? 0.1 What is the value of the Coefficient of Gradation? 7. What is the value of the Coefficient of Uniformity? 8. What is the value of the Sorting Coefficient? Percent Finer, % 0.01
The following are the results of sieve analysis: U.S. Sieve No. Mass of Soil Retained 4 0 10 44 20 56 40 82 60 51 80 106 100 92 200 85 Pan 35 a. Determine the percent finer than each sieve and plot a grain-size distribution curve. b. Determine D10, D30, and D60. c. Calculate the uniformity coefficient d. Calculate the coefficient of gradation
0 10 16 20 30 40 Liquid limit 50 60 70 80 90 100 0 10- CL-ML 20 Plasticity index 30 J A-line PI = 0.73(LL - 20) 40- U-line PI = 0.9(LL - 8) 70 7 Table 5.2 Unified Soil Classification System (Based on Material Passing 76.2-mm Sieve) Criteria for assigning group symbols O Gravels More than 50% of coarve fraction retained on No. 4 sieve Sands 50% or more of coerse fraction passes No. 4 sieve Coarse-grained soils More than 50% of retained on No. 200 sieve Fine-grained soils 50% or more passes No. 200 sieve Silts and clays Liquid limit less than 50 Silts and clays Liquid limit 50 or more Clean Gravels Less than 5% fines Gravels with Fines More than 12% fines Clean Sands Less than 5% fines Sands with Fines More than 12% fines Inorganic Organic Inorganic Organic C, 4 and 1 c, s 3 C 3r PI 7 and plots on or above "A" line (Figure 5.3) C = 6 and 1 c, ≤ 3 C6 and/or C, 3º Pl 7 and plots on or above "A" line (Figure 5.3) Pl> 7 and plots on or above "A" line (Figure 5.3 PI < 4 or plots below "A"…
Given below is the result of a sieve analysis done on a soil sample. Determine the value of the coefficient of uniformity. Round off th three decimal places.
QUESTION 2 a. The results given in Table 1 were obtained in a particle size distribution test for soil sample received in the laboratory. Table 1 US Sieve No. Size Opening(mm) Weight Retained(g) 4 4.75 0 10 2.0 18.5 20 0.85 53.2 40 0.425 90.5 60 0.25 81.8 100 0.150 92.2 200 0.075 58.5 Pan - 26.5i. Determine the percentage passing each sieve and plot the particle size distribution curve. ii. How much fine-grained soils are in the sample ? iii. Determine the amount of gravel and sand in the sample ? iv. Determine D10, D30, and D60 from the grain-size distribution curve. v. Calculate the uniformity coefficient, Cu. vi. Calculate the coefficient of gradation, Cc. vii. Describe the gradation curve (eg poorly graded)
The same soil sample has a natural moisture content of 30% and was subject to the Atterberg Limits test. The plastic limit was measured as 27 while the liquid limit test shows the results in the table below. Number of Blows 42 26 10 Moisture Content 20 32 45 a. Determine the liquid limit of the soil sample. Show and briefly explain how you got the answer. b. Solve and describe the Plasticity Index of the soil sample. c. Determine value and soil state of the liquidity index of the soil sample. d. Determined and describe the clay activity of the soil sample.