Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 2, Problem 2.7P
The particle characteristics of a soil are given below. Draw the particle-size distribution curve and find the percentages of gravel, sand, silt, and clay according to the MIT system (Table 2.3).
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8. a) According to the results of a sieve analysis in Table 1 below, plot the sieve analysis graph and construct a soil particle-size distribution curve.
Table 1
Sieve Size (mm)
Mass of retained (g)
4.75
0
2.00
40
0.850
60
0.425
89
0.250
140
0.180
122
0.150
210
0.075
56
Pan
12
b) Determine i)Effective size D10, D30, and D60 ii)Uniformity coefficient, Cu iii)Coefficient of curvature, Cc iv)Classify the soil based on the graph
Let us assume that a soil sample taken in the field is taken and it must be identified by the SUCS Method and AASHTO Method.
Moisture content = 5.75%
Limit liquid = 53.5
Plastic limit = 31.6
Granulometry
Sieve % Pass
No. 4 100
# 40 68
# 200 54.3
Do you select the best answer?
a) Inorganic silt and sand, with low plasticity
b) Inorganic clay with low plasticity
c) Clay silt, traces of gravel, dark Brown
Calculate the particle density of a soil using the following values; a. Weight of the flask= 40 g b. Volume of the flask= 50 cc c. Weight of dry soil= 15 g d. Weight of flask+soil+water= 96 g
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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- 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.arrow_forwardRepeat 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.arrow_forwardWith the aid of a diagram, explain how sieve analysis is conducted to determine the particle size distributions of soilarrow_forward
- with figures if necessary 1. A wet sand sample has a volume of 4.64 x 10-4 m3 and weighs 8 N. After oven-drying, the weight reduces to 7.5 N. Calculate the water content, void ratio, and degree of saturation. 2. The mass of a wet sample of soil and its container is 0.33 kg. The dry mass of the soil and its container is 0.29 kg. The mass of the container is 0.06 kg and its volume is 0.15 x 10-3 m3. Determine the bulk, dry and saturated unit weights of the soil. Determine the void ratio and degree of saturation. Determine the amount of air void in the soil and the water of water required to saturate 1 m3 of the soil. 3. A sand has a natural water content of 5% and bulk unit weight of 18.0 kN/m3. The void ratios corresponding to the densest and loosest state of this soil are 0.51 and 0.87. Find the relative density and degree of saturation.arrow_forwardIn an experiment of determining the porosity and specific gravity of solids of a soil, a soil is dug out from the ground, weighed, then oven dried, and then saturated with water. The weight of the soil taken from the test hole is 1346 grams. It was then oven dried and weighed 1076 grams. After saturating it with water, it weighed 1462 grams. The volume of the test hole was then measured and found to be 792 cc. Determine the void ratio (in percentage) of the soil sample.arrow_forwardQUESTION 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)arrow_forward
- Determine the percentage of Silts and Clays based on USCS 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_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_forwardVolume by immersion vs. volume by measurement Provide a comparison about the two methods on how to determine the unit weight of the soil; their advantages and disadvantages.arrow_forward
- A liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%. Number of Blows 6 12 20 28 32 Water content (%) 52.5 47.1 42.3 38.6 37.5 What is the plasticity index of this clay? (Use Interpolation) Group of answer choices 15.74% 18.99% 18.85% 17.63% Please answer this asap for upvote. thanksarrow_forwardA liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%. Number of Blows 6 12 20 28 32 Water content (%) 52.5 47.1 42.3 38.6 37.5 What is the liquidity index of this clay? (Use Interpolation) Group of answer choices 0.895 0.96 1.08 0.90 Please answer this asap. For upvote. Thanksarrow_forward5. The following information is obtained from a sieve analysis to determine the range of particle sizes in a granular soil sample. Sieve Size Sieve Opening (4.76) Percent Finer#4 4.76 96#10 2.00 80#20 0.84 51#40 0.42 38#60 0.25 25#100 0.149 12#200 0.074 5 Present the information as grain-size curve on semi-logarithmic coordinates of percent finer against particle size diameter. From the plot, determine the uniformity coefficient Cu.arrow_forward
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