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 2.14P
(a)
To determine
Find which of the soils has the largest percentage of gravels.
(b)
To determine
Calculate the percentage of sands in Soil C.
(c)
To determine
Find the presence of clay in any of the four soils.
(d)
To determine
Find if any specific range is missing in the soil A and provide the size range.
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Determine 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 23.00
1. Which properties of soil (e.g. air content, water content, void ratio, etc) can be changed or altered? Which properties of soil are constant?
2. What is the relative density of a soil? Relative to what?
Question 29
A soil with a liquidity index of -0.073 has a liquid limit of 57% and a plasticity index of 30%. What is its natural water content (in percent)? Round off to two decimal places.
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_forwardThe 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).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_forward
- Redo Problem 2.7 according to the USDA system (Table 2.3). 2.7 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).arrow_forwardRedo Problem 2.7 according to the AASHTO system (Table 2.3). 2.7 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).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
- A soil has a water content of 25 %, a void ratio of 0.7, and a specific gravity of solids of 2.7. (a) On the phase diagram shown below, choose the total volume to be equal to one, and fill up all other quantities. Use Kg for mass and m3 for volume. Use the phase diagram to calculate the following quantities. (i) total density (ii) dry density (iii) degree of saturation (iv) saturated density (assume no volume change)arrow_forwardDetermine the percentage of sand, silt and clay using the MIT soil classification system from the figure below.arrow_forwardIf soils cumulatively retained on sieve #4 is 68%, then the percentage of soil classified as sand, silt, and clay is:arrow_forward
- A soil with a liquidity index of 0 has a liquid limit of 59% and a plasticity index of 34%. What is its natural water content (in percent)? Round off to two decimal places.arrow_forwardCan I get a step by step for this question? Using the data presented for the given soil sample, determine the soil classification using the ASTM and the AASHTO Soil classification system. Give the group index if needed. The soil is inorganic soil. Sieve No. 19mm (¾ in.) 12.5mm (1/2in.) No. 4 (4.75 mm) No. 10 (2.00 mm). No. 20 (0.850 mm) No. 40 (0.425 mm) No. 100 (0.150 mm) No. 200 (0.075 mm) Percent Passing 100 83 67 56 54 45 39 36 Cu: 5.5 and Cc: 1.8 Atterberg limits: Liquid limit: 20%, Plasticity Index: 6%.arrow_forwardHow to determine the optimum water content and the corresponding maximum dry unit weight of the soil using graph in Excel?arrow_forward
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