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 5, Problem 5.3P
To determine
Find the zero-air void unit weight for a soil.
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1) The moist unit weight of a soil is 19.2 kN/m3 . Given that Gs = 2.69 and w = 9.8%, determine:
a. Void ratio
b. Dry unit weight
c. Degree of saturation
2) Refer to Problem 1 Determine the weight of water, in kN, to be added per cubic meter (m3) of soil for:
a. 90% degree of saturation
b. 100% degree of saturation
A layered soil has the following details: H₁ = 3ft, k₁ = 10-4 cm/sec : H ₂ = 4ft, k₂ = 3.2x10ˉ² cm/sec: H₃ = 6 ft, k₃ = 4.1x10ˉ⁵ cm/sec. What is the equivalent vertical permeability?
a. 5.14 x 10ˉ⁵
b. 7.37 x 10ˉ⁵
c. 6.23 x 10ˉ⁵
d. 9.81 x 10ˉ⁵
The following technical data are given below:
Overburden pressure = 180KPa
Increase in pressure = 140KPa
Clay thickness = 8m
Compression Index = 0.315
Void ratio = 1.132
What is the total settlement in clay?
Chapter 5 Solutions
Fundamentals of Geotechnical 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
- For a normally consolidated soil, the following is given: Determine the following: a. The compression index, Cc. b. The void ratio corresponding to pressure of 200 kN/m2arrow_forwardDetermine the average vertical permeability in mm/s of a soil mass made up of three horizontal strata, each 1 m thick, if the coefficients of permeability are 1 × 10^–1 mm/s, 3 × 10^-1 mm/s, and 8 × 10^–2 mm/s for the three layers.arrow_forwardDetermine the average horizontal and vertical permeabilities of a soil mass made up of three horizontal strata, each 1 m thick, if the coefficients of permeability are 1 × 10–1 mm/s, 3 × 10–1 mm/s, and 8 × 10–2 mm/s for the three layers.arrow_forward
- A layered soil is shown in the figure below. Given that H1 = 1 m, k1 = 10-4 cm/sec H2 = 1 m, k2 = 2.8 x 10-2 cm/sec H3 = 2 m, k3 = 3.5 x 10-5 cm/sec Estimate the ratio of equivalent permeability, kH(eq)/kV(eq).arrow_forwardA soil with a volume of 0.0283 m3 has a specific gravity of 2.7, a dry weight of 0.376 kN, and a wet weight of 0.459 kN. 1) Determine the volume of voids (Ans. 0.0149 m3) 2) Determine the void ratio (Ans. 1) 3) If the soil was submerged, determine the effective unit weight (Ans. 8.34 kN/m3)arrow_forwardA clay layer consolidates after 6 years when its thickness is 5.70 m and the void ratio is 1.08. Assuming the secondary compression index in 0.04, estimate the secondary compression settlement in the next 15 years. Express your answer in mm rounded to the nearest whole number.arrow_forward
- Given Gs = 2.75, calculate the zero-air-void unit weight for a soil in kN/m3 at w = 5%,8%, 10%, 12%, and 15%arrow_forwardFor a moist soil specimen, the following are given Gs= 2.67, volume = 0.5 m³ moist unit weight = 9.5 KN and the moisture content = 7.3%. Determine Dry unit weight, Void ratio, porosity, Degree of saturation.arrow_forwardA saturated soil specimen has w = 36% and ᵞd = 85.43 lb/ft3. Determine: Saturated unit weight (in lb/ft3)arrow_forward
- A 3 layer soil has the following properties from top to bottom. Obtain the equivalent vertical coefficienct of permeability, in cm/sec, round off to 7 decimal places, and obtain the equivalent horizontal coefficient of permeability, in cm/sec, round off to 5 decimal places.arrow_forwardThe moist unit weight of a soil is 19.2 kN/m3. Given that Gs = 2.69 and w = 9.8%, determine:a. Void ratiob. Dry unit weightc. Degree of saturationarrow_forwardA soil sample obtained at the Earth Dam site in Hydroelectric Power Scheme has a bulk unit weight of 18.5 kN/m3 at water content of 13.5%. spesific gravity 2.65 Determine the soil void ratio, degree of saturation and volume of air voidsarrow_forward
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