# A2 - Figure 2 If the rainfall is sufficient to maintain the...

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Prof. M. Meguid 200 8 -200 9 McGill University DEPARTMENT OF CIVIL ENGINEERING AND APPLIED MECHANICS CIVE 416 - Geotechnical Engineering Assignment No. 2 1. Calculate the seepage occurring beneath the dam shown in Figure 1 for the case where (a) There is no cut off (b) There are two cut offs at the upstream and downstream sides of the dam (c) Compare the hydraulic gradient existing at the toe of the dam for cases (a) and (b) above. The soil beneath the dam has a permeability of 0.06 cm/s in both the horizontal and vertical directions. 25 m 6 m 10 m 20 m Cut off Figure 1 6 m Cut off Impermeable

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Prof. M. Meguid 200 8 -200 9 2- Heavy rain is falling on to the surface of a layer of soil drained by single drainage pipe (see
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Unformatted text preview: Figure 2). If the rainfall is sufficient to maintain the water level at the surface of the soil and the pipe is just running to capacity, calculate the flow of water carried by the pipe per unit length. (Permeability of the soil: k = 5 x 10-3 cm/s) 0.334 φ Drainage pipe 1.33 m 0.67 m Heavy rain Impermeable Figure 2 Prof. M. Meguid 200 8-200 9 15 m 2 1 2 1 30 m Filter drain Impermeable stratum 30 m Figure 3 3. The homogeneous earth dam shown in Figure 3 is provided with a filter drain to control the seepage. If the coefficient of permeability of the soil from which the dam is constructed is 3.47 x 10-4 cm/s, calculate the seepage loss per day from 100 m length of the dam....
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## This note was uploaded on 04/19/2011 for the course CIVE 416 taught by Professor Meguid during the Winter '10 term at McGill.

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A2 - Figure 2 If the rainfall is sufficient to maintain the...

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