15:33 O az23...CНАРТER 7.pdfKnowing that k = 6 × 10-3 cm/sec for the permeable layer, calculate the rateseepage through this layer in m³/hr/m width. Given: H = 5.4 m anda = 7°.ofGroundwater table (frsurface)HDirectionof seepageO Impervious layer D Ground surfaceFigure 7.297.2 Redo Problem 7.1 for a = 5° and a = 9°. All other site conditions remainingthe same, what impact does the slope angle have on the rate of seepage?7.3 Seepage is occurring through the sandy layer underneath the concrete dam asshown in Figure 7.30.Concrete damH1SeepageH2Sandy layerImpervious rockLFigure 7.30Given: upstream water level, H,thickness of the sandy layer, H,sandy layer, kDetermine:= 16 m; downstream water level, H, = 2.3 m;0.75 m; hydraulic conductivity of the0.009 cm/sec; void ratio of sand, e = 0.8; and L = 45 m.a. Rate of seepage per unit length of the dam (in m³/hr/m)b. Seepage velocityc. Quantity of seepage per day if the dam is 350 m longCopyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203Problems255! Redo Problem 7.3 with the following information: H, = 12 m; H, = 2 m; H, =0.5 m; k = 6.3 × 10-3 cm/sec; e = 1.22; L = 52 m; and dam length = 410 m.5 A pervious soil layer is sandwiched between two impervious layers as shownin Figure 7.31. Find the rate of flow in m³/sec/m (at right angles to the crosssection) through the pervious soil layer. Given: H =h = 2.5 m, S = 28 m, a = 12°, and k = 0.055 cm/sec.3.5 m, H, = 1.75 m,

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7.3 Seepage is occurring through the sandy layer underneath the concrete dam as shown in Figure 7.30. Concrete dam H1 Seepage |H, H2 Sandy layer Impervious rock L Figure 7.30 Given: upstream water level, H, = 16 m; downstream water level, H, = 2.3 m; thickness of the sandy layer, H, sandy layer, k = 0.009 cm/sec; void ratio of sand, e = %3D 0.75 m; hydraulic conductivity of the 0.8; and L = 45 m. Determine: a. Rate of seepage per unit length of the dam (in m³/hr/m) b. Seepage velocity c. Quantity of seepage per day if the dam is 350 m long

7.3 Seepage is occurring through the sandy layer underneath the concrete dam as shown in Figure 7.30. Concrete dam H1 Seepage |H, H2 Sandy layer Impervious rock L Figure 7.30 Given: upstream water level, H, = 16 m; downstream water level, H, = 2.3 m; thickness of the sandy layer, H, sandy layer, k = 0.009 cm/sec; void ratio of sand, e = %3D 0.75 m; hydraulic conductivity of the 0.8; and L = 45 m. Determine: a. Rate of seepage per unit length of the dam (in m³/hr/m) b. Seepage velocity c. Quantity of seepage per day if the dam is 350 m long

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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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

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15:33 O az
23
...
CНАРТER 7.pdf
Knowing that k = 6 × 10-3 cm/sec for the permeable layer, calculate the rate
seepage through this layer in m³/hr/m width. Given: H = 5.4 m and
a = 7°.
of
Groundwater table (fr
surface)
H
Direction
of seepage
O Impervious layer D Ground surface
Figure 7.29
7.2 Redo Problem 7.1 for a = 5° and a = 9°. All other site conditions remaining
the same, what impact does the slope angle have on the rate of seepage?
7.3 Seepage is occurring through the sandy layer underneath the concrete dam as
shown in Figure 7.30.
Concrete dam
H1
Seepage
H2
Sandy layer
Impervious rock
L
Figure 7.30
Given: upstream water level, H,
thickness of the sandy layer, H,
sandy layer, k
Determine:
= 16 m; downstream water level, H, = 2.3 m;
0.75 m; hydraulic conductivity of the
0.009 cm/sec; void ratio of sand, e = 0.8; and L = 45 m.
a. Rate of seepage per unit length of the dam (in m³/hr/m)
b. Seepage velocity
c. Quantity of seepage per day if the dam is 350 m long
Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203
Problems
255
! Redo Problem 7.3 with the following information: H, = 12 m; H, = 2 m; H, =
0.5 m; k = 6.3 × 10-3 cm/sec; e = 1.22; L = 52 m; and dam length = 410 m.
5 A pervious soil layer is sandwiched between two impervious layers as shown
in Figure 7.31. Find the rate of flow in m³/sec/m (at right angles to the cross
section) through the pervious soil layer. Given: H =
h = 2.5 m, S = 28 m, a = 12°, and k = 0.055 cm/sec.
3.5 m, H, = 1.75 m,

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