Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 2, Problem 2.6P
In AASHTO, which group are the following soil likely to fail into?
- a. A well-graded gravel with approximately 10% fines
- b. A well-graded sand with approximately 10% fines
- c. A uniform fine sand
- d. A high plastic clay
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In AASHTO, which group are the following soil likely tofall into?
a. A well-graded gravel with approximately 10% finesb. A well-graded sand with approximately 10% finesc. A uniform fine sandd. A high plastic clay
Problem 2.1: The following values for a sand are given: D10 = 0.3 mm, D30 = 0.41 mm, and D60 = 0.77 mm.Determine Cu and Cc, and state if it is a well-graded or a poorly-graded soil.
Determine the relative density of a cohesionless soil having void ratio 0.5. The void ratio of the soil in the loosest and most dense state is 0.75 and 0.45 respectively.
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Principles of Foundation Engineering (MindTap Course List)
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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
- In AASHTO, which group are the following soils likely to fall into? a. A well graded gravel with approximately 10% fines. b. A well graded sand with approximately 10% fines. c. A uniform fine sand. d. A high plastic clay.arrow_forward1. What would you expect when a soil dominated with expanding type of clay is wetted? A.There is an increase in soil dry mass B.There is an increase in soil volume C.There is a reduction in soil dry mass D.There is a decrease in soil volumearrow_forwardAssume a deep deposit of normally consolidated clay. Which of the following processes or actions would lead to the soil becoming over consolidated (select all options that apply)? A.Construction of a road embankment B.Unprecedented water level drawdown extended over a long period of time C.Traffic loads induced by the presence of trucks on site at times D.Heavy rainfalls raising the original water table at the ground surface E.Deep compaction of the clay depositarrow_forward
- Subject: Soil Mechanics Please provide a solution and a diagram If a representative clay specimen 20 mm thick, under double drainage, took 121 minutes for 90% primary compression, estimate the time in days required for 50% primary compression of a field layer 2 m thick, bounded by impervious boundary at the bottom and sand at the top. a. 725 b. 679 c. 650 d. 781arrow_forwardWhy does deposits of clay-mix soils do not experience liquefaction during earthquakes?arrow_forwardIgnoring the given Es-data and considering that the supporting soil is clean, normally consolidated sand with the following available data:arrow_forward
- The void ratio for clay soils commonly is greater than the void ratio for the coarse-grained soils, but comparisons of the coefficient of permeability indicate considerably lower values for clay. Explain.arrow_forwardA fine-grained soil (no sand) is found to have a liquid limit of 70 percent and a plastic limit of 38 percent. (a) What do the percentages for these limit values represent? (b) What is the plasticity index for this soil? (c) On the plasticity chart for the Unified Soil Classification System, what soil type is this? (d) On the plasticity chart for the AASHTO classification system, what soil type is this?arrow_forwardWhat is the thixotropy phenomenon in clay soils and what causes it?arrow_forward
- What effect does the presence of adsorbed water in clay have on the coefficient of permeability for this type of soil?arrow_forwardA certain saturated sand (S = 100,) has a moisture content of 25.1 percent and a specificgravity of solids of 2.68. It also has a maximum index void ratio of 0.84 and a minimum indexvoid ratio of 0.33. Compute its relative density and classify its consistency.arrow_forward3. A sample of moist clay is found to have moisture content of 400% and degree of saturation of 85%. The specific gravity of the solids is 2.76. Determine the voids ratio of this soil.arrow_forward
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