The figure shows the layers of soll in a tube that is 100mm by 150mm in cross-section. Water is supplied to maintain a constant head difference of 450mm across the sample. The hydraulic conductivity of the soils in the direction of flow through them are tabulated as shown. Compute the flow rate in cm:/hr. k = 2 x 10 cm/s K = 1.75 x 10 cm/s k = 3.7 x 10 cm/s K= 2.1 x 10" cm/s Water upply outfiow S0 mm A D 50 mm 200 200 200

The figure shows the layers of soll in a tube that is 100mm by 150mm in cross-section. Water is supplied to maintain a constant head difference of 450mm across the sample. The hydraulic conductivity of the soils in the direction of flow through them are tabulated as shown. Compute the flow rate in cm:/hr. k = 2 x 10 cm/s K = 1.75 x 10 cm/s k = 3.7 x 10 cm/s K= 2.1 x 10" cm/s Water upply outfiow S0 mm A D 50 mm 200 200 200

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Hydraulic Conductivity

Section: Chapter Questions

Problem 6.10P

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H H, H, k, H k, A layered soil is shown in the figure above. Estimate the equivalent hydraulic conductivity for flow in the vertical direction. Suppose that k1 = 5.0 x10-4 cm/s, k2 = 6.0 x10- cm/s, k3 = 6.0 x10-4 cm/s, k4 = 2.0 ×10-4 cm/s, H1 = 1.5 m, H, = 2.5 m, H3 = 2.0 m, H4 = 1.5 m. (Enter your answer to three significant figures.) cm/s
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H k, H, H k, H A layered soil is shown in the figure above. Estimate the equivalent hydraulic conductivity for flow in the vertical direction. Suppose that ki = 5.0 ×10¬4 cm/s, k2 = 4.0 ×10-4 cm/s, k3 = 4.0 ×10-4 cm/s, k4 = 1.0 ×10¬4 cm/s, Н - 2.0 m. H, - 2.0 m. Hз - 2.5 m. На - 2.5 m. (Enter your answer to three significant figures.) kyle) cm/s
A layered soil is shown in Figure B. Estimate the ratio of equivalent horizontal and vertical hydraulic conductivity. 1.5 m 1m 1.5 m I m k = 2 × 10-3 cm/sec (top layer) k = 2 × 10-4 cm/sec k = 10-4 cm/sec %3D k = 3 × 10-4 cm/sec (bottom layer)
A layered soil is shown in (Figure 1). Estimate the ratio of equivalent hydraulic conductivity, kH(eq)/kV(eq). Q2 1.5 m k = 2 x 10-3 cm/sec (top layer) | k = 2 × 10-4 cm/sec | k = 10-4 cm/sec k= 3 x 10-4 cm/sec (bottom layer) (N 1.5 m I m SC
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a. For Figure 2 below, calculate the effective hydraulic conductivity for flow parallel and perpendicular to layering. Show your work. Explain the difference in values. Figure 2 sand layer; K = 1 m/d; thickness = 5 d 10.5 m clay layer; K = 0.000001 m/d; thickness = 0.5 m sand laver: K = 1 m/d; thickness = 5 m b. Figure 3 below shows the effects of groundwater refraction, assuming that groundwater flow in the top layer is almost horizontal i.e., a = 89.8°, what is B and what can you say about the flow in the clay layer? a a K, b B K Figure 3.
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