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 2.12P
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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Gradation parameters of soil (a) are: D10 = 0.08 mm, D30 = 0.22 mm, and D60 = 0.41 mm. and for soil (b), gradation parameters are: D10 = 0.24mm, D30 = 0.82, and D60 = 1.81mm.
Calculate the coefficient of uniformity and the coefficient of curvature.
Compare the soils based on their gradation parameters and discuss the expected engineering behavior of each soil.
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.
For an inorganic soil, the following grain-size analysis is given.
For this soil, LL = 23 and PL = 19. Classify the soil by using Unified Soil Classification System. Give group names and group symbols.
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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- Repeat 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_forwardThe 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_forwardCalculate the bulk density of a soil using the following values; a. Weight of fresh clod= 35 g b. Weight of paraffin clod= 38 g c. Weight of paraffin clod in water= 16 g d. Moisture content of the clod= 12%arrow_forward
- Determine the percentage of the following types of soil in the sample;(i) Gravel(ii) Coarse –grained sand(iii) Medium grained sand(iv) Fine grained sand(v) Fines (silt + clay)arrow_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_forwardA saturated soil has the following characteristics: Initial mass = 40.91 grams Final mass = 28.79 grams Initial Volume = 23 cm3 Final Volume = 15 cm3 Determine the specific gravity of soil solids. Round off to two decimal places.arrow_forward
- QUESTION: Determine the best answer for the following question: Which of the following is NOT used in classifying the type of soil based on the water content within its void spaces and why? (A) frozen soil (B) dry soil (C) moist soil (partially-saturated soil) (D) saturated soil (fully-saturated soil)arrow_forwardThe 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_forwardGiven the following properties of a soil: Porosity, n = 42.1% Specific gravity of soil solids, Gs = 2.71 a.) Calculate the void ratio of the soil. b.) Calculate the saturated unit weight of the soil. c.) Calculate the effective unit weight of the soil.arrow_forward
- Calculate the bulk density of a soil using the following values;a. Weight of fresh clod= 35 gb. Weight of paraffin clod= 38 gc. Weight of paraffin clod in water= 16 gd. Moisture content of the clod= 12% a. 1.67 b. 1.66 c. 1.65 d. 1.64arrow_forwardQuestion: For a given soil, the following are known: Percentage passing No. 4 sieve = 100 Percentage passing No. 200 sieve =61 Liquid limit = 26 Plastic Index =6 Classify the soil using the Unified Soil Classification System. Give the group symbol and the group name.arrow_forwardWhat amount of water in (gr) do we have to add to a soil sample to increase its volume to 25 cm3? We know the following information about this soil: - Soil’s specific gravity is 2.5. - Void ratio (e) is 0.5. - Moisture content is 20%. - The water density is 1 gr/cm3. Hint 1: First calculate the saturation value. Hint 2: When soil is fully saturated, if we add V1 amount of water (m3), the volume of soil will increase directly by V1 (m3). Hint 3: Use the following equation to find the answer: Question 17Answer a. 50 b. We do NOT have enough information c. 12.5arrow_forward
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