Chapter 8, Problem 8.1CTP

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9th Edition

Braja M. Das + 1 other

ISBN: 9781305970939

Textbook Problem

Refer to Problem 8.12. Given
^{3}/min/m) using Schaffernak’s solution.

**8.12** An earth dam section is shown in Figure 8.28. Determine the rate of seepage through the earth dam using Pavlovsky’s solution. Use *k* = 4 × 10^{–5} mm/s.

To determine

Find the seepage rate through the earth dam using Schaffernak’s solution.

Explanation

Given information:

The height of the water level *H* is 32 m.

The height of the earth dam

The length of earth dam top *B* is 7 m.

The hydraulic conductivity of the permeable soil layer along *x* axis

The hydraulic conductivity of the permeable soil layer along *y* axis

Calculation:

The value of

Determine the horizontal distance

Here, vert is the vertical distance in the given slope and hori is the horizontal distance in the given slope.

Substitute 32 m for *H*, 1 for vert, and 2 for hori.

Determine the horizontal distance

Here,

Substitute 3 m for

Determine the value of

Substitute

Determine the horizontal distance

Substitute 0.5 for *B*.

Determine the horizontal distance

Substitute 32 m for *H*, 1 for vert, and 2 for hori.

Draw the transformed section of the earth dam as in Figure 1

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