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Principles of Geotechnical Enginee...

9th Edition
Braja M. Das + 1 other
ISBN: 9781305970939

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BuyFindarrow_forward

Principles of Geotechnical Enginee...

9th Edition
Braja M. Das + 1 other
ISBN: 9781305970939
Textbook Problem

For the weir shown in Figure 8.26, calculate the seepage in the permeable layer in m3/day/m for (a) x′ = 1 m and (b) x′ = 2 m. Use Figure 8.13.

images

(a)

To determine

Find the seepage in the permeable layer in m3/day/m for x=1m.

Explanation

Given information:

The hydraulic conductivity of the permeable soil layer k is 103cm/sec.

The height of the water level H is 6 m.

The depth of penetration of the sheet pile S is 4 m.

The thickness of the permeable soil layer T is 8 m.

The value of width B is 8 m.

Calculation:

Determine the ratio of S/T.

Substitute 4 m for S and 8 m for T.

S/T=48=0.5

Determine the value of x using the relation

x=bx=B2x

Substitute 8 m for B and 1 m for x.

x=821=3m

Determine the ratio of xb.

Substitute 3 m for x and (82)m for b.

xb=38/2=0.75

Determine the ratio of bT.

Substitute (82)m for b and 8 m for T

(b)

To determine

Find the seepage in the permeable layer in m3/day/m for x=2m.

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