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EBK FUNDAMENTALS OF GEOTECHNICAL ENGINE
5th Edition
ISBN: 8220101425829
Author: SIVAKUGAN
Publisher: CENGAGE L
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Textbook Question
Chapter 4, Problem 4.2P
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.
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- 1- A constant head permeameter is used for Coarse-grained soils (b) Silty soils (c) Clayey soils (d) Organic soils 2-The effective stress controls the following properties of soils: (a) Shear strength (b) Compressibility Permeability (d) All the above 3- The shear strength of plastic undrained clay depends upon (a) Internal friction Cohesion (c) Both (a) and (b) (d) Neither (a) and (b) 4-The coefficient of compressibility is the ratio of (a) Change in void ratio to change in effective stress (b) Volumetric strain to change in effective stress. (c) Change in thickness to change in effective stress. (d) Stress to strain 5- With an increase in the liquid limit, compression index (a) Decreases () Increases (c) Remain constant (d) May increase or decreasearrow_forwardA soil that contains only sizes between 0.1 and 1 mm can be classified as uniform sand Select one: O True O Falsearrow_forwardIn a soil specimen, 70% of particles are passing through 4.75 mm sieve and 40% of particles are passing 0.075 mm sieve. Its uniformity coefficient is 8 and coefficient of curvature is 2. As per USCS, this soil is classified as: a.SP b.GP c.GW d.SWarrow_forward
- A sand is comprised of solid constituents that have a density (ps) of 2.68 Mg/m³. The void ratio, e, of the specimen is 0.58. Compute the following: (a) pa; (b) density when saturated, psat, and (c) relative density, Dr, using additional information that this soil has a maximum void ratio, emax, of 0.85 and a minimum void ratio, emin, of 0.43. (include your phase diagram(s)) (a) kg/m³ (b) kg/m³ (c)arrow_forwardWhy does deposits of clay-mix soils do not experience liquefaction during earthquakes?arrow_forwardAs per the application of discrete fiber reinforced sand,how it is mixed uniformly in sand?arrow_forward
- Q.1. Select the right answer of the following: 1. The void ratio of soil can be: a. greater than void ratio b. less than void ratio c. equal to void ratio d. no one 2. When Gravel had coefficient of uniformity of 3, the soil could be according USCS: a. GW b. GP c. SP d. any one of them 3. In a wet soil mass, air occupies 1/6 of volume and water occupies 1/3 of volume. The void ratio is: a. 0.25 b. 0.50 4. For the soil with LL= 45%, PL = 25% and water content = 15% the liquidity index is: B.0 с. 1.50 d. 1.00 a.0.6 5. The type of unit weight of soil s depends on: с. 1 dinone of them а. е b. n c. YW d. S 6. Soil has LL of 30, the corresponding plasticity index given by A-line: a. 7.3 b. 7.5 c. 9.0 d. 9.5 7. The porosity in of soil is function of: c. Vv & n P.= L.L-PL 12:45-25=2 a. Vv&Vs b. Vv& Vt d. Vs & n 8. For a soil deposit having n= 33% and G 2.6, ysaturated= 15KN/m3, S is: %3D а. 1.0 b. 1.05 с. 1.07 d. 1.10 10. When saturation in soil sample occurs, the degree of saturation: a.…arrow_forwardClassify the soll sample using the U.S. Department of Agriculture textural classification chart. Sand -60 Silt - 35 Clay = 70. 100 Clay Sulty slay Sindy Claloan Sy clay Senly clay Sdry ain Sudy lea Percentage of sand Select one: a. Loamy sand b. Sandy loam c. Silty clay d. none of the choices e. Clay loam netage of si i Percent OOO O Oarrow_forwardAnswer whether the following statements are TRUE or FALSE. 2.1 If the voids in the soil contain only air, the soil is stated to be saturated. 2.2 Soils above the water table are regarded to be partially saturated. 2.3 The average relative density of quartzitic sands is above 3.0. 2.4 A gap graded soil aggregate can be visually seen on a grading chart with horizontal portions on the curve.arrow_forward
- Problem 1: For a gravel with D60 0.48mm, D30 0.25mm, and D10 coefficient and the coefficient of gradation. Is it a well-graded or poorly graded soil? - = = = 0.11mm, calculate the uniformity Problem 2: 0.3 mm, D30 The following values for a sand are given: D10 Determine Cu and Cc and state if it is a well-graded or a poorly graded soil. = 0.41 mm, and D60 = = 0.77 mm.arrow_forwardWhy does the presence of water in a soil typically have a much greater effect on clays than on sand or gravel materials?arrow_forwardA clay soil is found to have a liquid limit of 75%, aplastic limit of 45% and a shrinkage limit of 25%. If asample of this soil has a total volume of 30 cu.cm atthe liquid limit and a volume of 16.7 cu.cm at theshrinkage limit, determine the following.a. Mass of soil at the shrinkage limit.b. Shrinkage ratio.c. Specific gravity of solids.arrow_forward
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