What will be the ratio of average permeability in the horizontal direction to that in the vertical direction for a soil deposit consisting of three horizontal layers if the thickness and permeability of the second layer are twice those of the first and those of the third layer twice those of the second?

What will be the ratio of average permeability in the horizontal direction to that in the vertical direction for a soil deposit consisting of three horizontal layers if the thickness and permeability of the second layer are twice those of the first and those of the third layer twice those of the second?

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter15: Foundations On Difficult Soil

Section: Chapter Questions

Problem 15.2P

See similar textbooks

Similar questions

A horizontal stratified soil deposit consists of three layers each uniform in itself. The permeabilities of these layers are 8 × 10^–4 cm/s, 52 × 10^–4 cm/s, and 6 × 10^–4 cm/s,and their thicknesses are 7, 3 and 10 m respectively. Find the effective average permeability in mm/s of the deposit in the horizontal direction. a. 15.9 x 10^-3 b. 8.9 x 10^-3 c. 7.7 x 10^-3 d. 13.6 x 10^-3
A horizontal stratified soil deposit consists of three layers each uniform in itself. The permeabilities of these layers are 8 × 10^–4 cm/s, 52 × 10^–4 cm/s, and 6 × 10^–4 cm/s,and their thicknesses are 7, 3 and 10 m respectively. Find the effective average permeability in mm/s of the deposit in the vertical direction. a.7.7 x 10^-3 b.8.9 x 10^-3 c.13.6 x 10^-3 d.15.9 x 10^-3
A horizontal stratified soil deposit consists of three layers each uniform in itself. The permeabilities of these layers are 8 × 10–4 cm/s, 52 × 10–4 cm/s, and 6 × 10–4 cm/s, and their thickness are 7, 3 and 10 m respectively. Find the effective average permeability of the deposit in the horizontal and vertical direction (mm/s).
Why might the permeability in fine-grained soil deposits be expected to be greater for horizontal flow than for vertical flow?
Determine 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.
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.
If a saturated layer has a unit weight of 125 pcf, what is the submerged unit weight?What is the degree of consolidation of the abovementioned soil?
Solve it completely....Determine 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.
A normally consolidated clay layer, 4m thick, has the following properties:Initial void ration, eo = 0.65Compression Index, Cc = 0.20Average effective pressure, σ’o = 100 kPaExpected pressure increase due to loading on ground surface = 30 kPaSecondary compression index, Cα = 0.02Time for completion of primary settlement = 1.5 yearsWhat is the total settlement of the clay layer five years after the completion of primary consolidation settlement?
A clay layer, whose total settlement under a given loading is expectedto be 13cm settles 3 cmat end of 1 months after application of load increment. How many months will be required to reach a settlement of 8cm? How much settlement will occur in 12months? Assume the layer to have double drainages
Determine 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.
Briefly indicate the difference between a normally consolidated and an overconsolidated soil deposit.