Principles of Geotechnical.. - With Mindtap (2 Sem)
9th Edition
ISBN: 9781337578264
Author: Das
Publisher: Cengage
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Chapter 2, Problem 2.3P
(a)
To determine
Calculate the uniformity coefficient
(b)
To determine
State the sands A, B, and C are well-graded or a poorly-graded.
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b) Determine D10, D30 and D60 for each soil.
c) Calculate the uniformity coefficient and coefficient of gradation Cu and Ccrespectively.
Figure 2 shows the dry density versus water content relationship for a fine-grained soilcompacted using two different levels of energy. Three points are identified on thesecompaction curves and labeled as A, B and C.
Describe and compare the soil structure of A and B.
A soil profile is shown in Figure P3.3 along with the standardpenetration numbers in the clay layer. Use Eqs. (3.8b)and (3.9) to determine the variation of cu and OCR withdepth. What is the average value of cu and OCR?
Chapter 2 Solutions
Principles of Geotechnical.. - With Mindtap (2 Sem)
Ch. 2 - For a gravel with D60 = 0.48 mm, D30 = 0.25 mm,...Ch. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - The following are the results of a sieve analysis....Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - Repeat Problem 2.4 with the following data. 2.4...Ch. 2 - The following are the results of a sieve and...Ch. 2 - Repeat Problem 2.8 using the following data. 2.8...Ch. 2 - Repeat Problem 2.8 using the following data. 2.8...
Ch. 2 - The grain-size characteristics of a soil are given...Ch. 2 - Repeat Problem 2.11 with the following data. 2.11...Ch. 2 - Repeat Problem 2.11 with the following data. 2.11...Ch. 2 - A hydrometer test has the following result: Gs =...Ch. 2 - Repeat Problem 2.14 with the following values: Gs...Ch. 2 - Three groups of students from the Geotechnical...Ch. 2 - Refer to Problem 2.C.1. Results of the sieve...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Redo 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_forwardRefer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the shrinkage limit of the soil as shown in Figure 4.22. 4.5 The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.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
- A soil sample presents the physical indices presented in Table 2. Determining the classificationof the soil sample, according to the Unified Classification System (SUCS), diagram in Figure 1.arrow_forwardFigure 2 shows the dry density versus water content relationship for a fine-grained soilcompacted using two different levels of energy. Three points are identified on thesecompaction curves and labeled as A, B and C. Compare the relative saturated shear strength of soil specimens A and C?arrow_forwardGradation 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.arrow_forward
- Define the following properties of soil: • 1 Liquid Limit • 2 Plastic Limit 3 Plasticity Indexarrow_forwardQ#3 :The following are the results of different tests on soil samples are provided in the following table. Classify the soil according to AASTHO classification and determine the Group Index in each case. You may use the information provided.arrow_forwardFollowing are the results of a shrinkage limit test. Determin the shrinkage limit, in percent, of the soil. Round off to two decimal places.arrow_forward
- Answer the following: a) What is the difference between the U-line and the A-line on a plasticity chart? b) What is the dividing point between silts and clays on a plasticity chart? c) What is the dividing point between low, medium, and high plasticity on a plasticity chart? d) An inorganic soil has a Liquid Limit of 55 and a Plastic Limit of 30. Using the plasticity chart determine the relative classification for this soil.arrow_forwardThe result of particle-size distribution of a soil sample is recorded below. Using the AASHTO classification table, determine the following: 1. Classification of soil A. 2. Classification of soil B. 3. Classification of soil C.arrow_forwardA soil sample with a water content of 14.5% and unit weight of 128.2 lb/ft3 was dried to a unit weight of 118.8 lb/ft3 without changing its void ratio. What is its new water content.arrow_forward
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