A layer soil has the following data: H1=3m K1=2x10^-2 cm/s H2=4m K2=3.2x10^-2 cm/s H3=6m K3=4.1x10^-2 cm/s a) Compute the equivalent coefficient of permeability in the vertical direction b) Compute the velocity of flow if h =4 m.

A layer soil has the following data: H1=3m K1=2x10^-2 cm/s H2=4m K2=3.2x10^-2 cm/s H3=6m K3=4.1x10^-2 cm/s a) Compute the equivalent coefficient of permeability in the vertical direction b) Compute the velocity of flow if h =4 m.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

A layer soil has the following data:

H1=3m K1=2x10^-2 cm/s
H2=4m K2=3.2x10^-2 cm/s
H3=6m K3=4.1x10^-2 cm/s

a) Compute the equivalent coefficient of permeability in the vertical direction
b) Compute the velocity of flow if h =4 m.

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The figure shows the layers of soil in a tube that is 100mm x 100 mm in cross section. Water is supplied to maintain a constant head difference of 450 mm across the sample. The hydraulic conductivity of the soils in the direction of flow through them are given below. Compute the equivalent hydraulic conductivity in m/hr. Water supply h=450 mm Out flow Direction of flow Soil Soil Soil A B 200 200 200 mm mm mm K, = 2 x 10-4 cm/s KR = 3.7 x 10-2 cm/s Kc = 1.2 x 10 -5 cm/s Select one: a. 0.002124 b. 0.002412 c. 0.001224 d. 0.004221
Please help me answer d and e.
Note:Format should not be hand written.
4. With two cases shown in the following figure: Plot pore pressure with depth for the soils if hydraulic conductivity of soils K1 = 5 x K2. a- b- flow through a unit thickness of the cross-section if K1 = 5 x 10$ (f/s) and K2 = 1 x 10$ (f/s). Estimate the rate of seepage (q) per linear foot of cross-section, i.e. calculate the rate of C- Plot flow net for 2 cases. -z (ft) z (ft) Water Water 3 ft 3 ft Soil 1 1.5 ft Soll 1 Sol 2 3 ft 3 ft 3 ft 1.5 ft Soil 2 Datum psf Datum psf porous stone porous stone 3 ft 1.5 ft 1.5 ft Case 1 Case 2
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For the soil specimen shown in figure ,calculate the soil permeability if rate of flow is 2 cc / min . Take area cross - section of soil specimen as 8 cm² .