Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 6, Problem 6.2P
To determine
Calculate and plot the variation of dry density at various water contents and the various degree of saturation.
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Soil Mechanics
(1) For a soil, the following are given: Specific gravity = 2.67, moist unit weight = 17.6 kN/m³, water
unit weight = 9.81 kN/m3 and moisture content = 12 %. Determine
(a) Dry unit weight,
(b) Void ratio,
(c) Porosity,
(d) Degree of saturation
13. A soil has a specific gravity of solids (Gs) of 2.65, a water content of 13% and a void
ratio of 0.8.
a. draw the phase diagram and fill it in with the numerical values
b. determine the porosity, saturation, and the dry, saturated, and submerged unit
weights in lb/ft³.
using
Gs= Ms
me
11. Situation 11 - The moist unit weight and degree of saturation of a soil are given in the following table.
a. Determine the unit weight of the soil in kN/m3 if s = 13%. Round off to two decimal places.
bDetermine the unit weight of the soil in kN/m3 if s = 69%. Round off to two decimal places.
c. Determine the saturated unit weight in kN/m3. Round off to two decimal places.
Chapter 6 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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- 4.For a given soil, Gs = 2.74 and moist unit weight is 20.6kN/m3, and moisture content of 16.6%. a. Determine the dry unit weight of soil. b. Determine the degree of saturation of the soil. c. Determine the volume of water to be added per cubic meter of soil for the soil to be saturated.arrow_forwardCalculate the water content of a soil with zero air voids and void ratio equal to 0.5. (Take G=2.7)arrow_forwardA permeameter tube (square cross-section) is filled with layers of soil of different permeability as shown below. Find the equivalent permeability for the assembly of soils Find the Total head, elevation head and pore water pressure at points (A, B, and C) with respect to the given datum. Given: k1=2k2=3k3=k4= 2x10³ cm/sec All units are in cm 55.0 F12.512.5 k ki 15.0HA k1 100 30.0 20.0 40.0- k2 Datum 5.0arrow_forward
- The moist unit weights and degrees of saturation of a soil sample are given as follows: a. Determine the specific gravity of the soil solidsb. Determine the porosity.c. Find the dry unit weight of soilarrow_forwardFor a moist soil sample, the following are given. Total volume: V =1.2 m, Total mass: M= 2350 kg Moisture content%3 8.6% Specific gravity of soit solids: G 2.71 Determine the following. i. Moist density ii. Dry densityarrow_forwardCompute the total unit weight, dry unit weight, water content, and saturated unit weight of the soil sample below. Volume Weight Air Va Vv Vw Wa watef ww V Vs solids Ws Given: e = 0.8 s = 0.9 Gs = 2.68arrow_forward
- Homework Help. I’m stuck! Thank you! I will leave thumbs up!arrow_forwardPlease Solve this question 3.10 in picturearrow_forwardThe transformed coefficient of permeability of an equivalent isotropic soil mass is 13 x 10-/ cm/s. Determine the permeability in vertical direction if the permeability in horizontal direction is 3 x 10 7 cm/s.arrow_forward
- d. Problem III. A sample of wet soil has water content of 18% and a porosity of 42%. The unit weight of soil solid is 25.917 (kN/m³). a. Find the dry density and saturated density (kN/m³). b. If the degree of saturation increases by 25%, determine the mass density (kN/m³)arrow_forwardFor a given Soil, the following are known. Gs = 2.74, moist unit weight = 19Kn/m3 and moisture content = 17%.a. Determine the weight of water in KN to be added per cubic meter of soil for a100% degree of saturation.b. Determine the weight of water in KN to be added per cubic meter of soil for93% degree of saturation.arrow_forwardPlease help, show all work, I don’t know how to do this!arrow_forward
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