CEG3011 Homework 7

# CEG3011 Homework 7 - CEG 3011 Spring 2010 Soil Mechanics...

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1 CEG 3011 Spring 2010 Soil Mechanics Homework 7 Due Friday March 26 th 2010 Problem 1 Water is being pumped from the sand aquifer situated below a lake as shown below. A pressure transducer was installed at the interface of the sand layer aquifer and the slit layer. The pressure transducer measured a porewater pressure of 312 PSF. Which direction is the flow moving. (is the lake feeding the aquifer or vise versa) EXPLAIN. Hint: find the total head on both sides of the silt layer and compare them Find the porewater pressure at B Sand Aquifer Silt Lake 12 ft 10 ft Pressure Transducer 4 ft B

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2 Problem 2 Use the flow net below to solve answer the following; How many flow paths are there in the flow net How many drops are there. How much head loss occurs per drop Find the pressure head at point A (5 feet from the surface on the downstream) Find the porewater pressure at point B (7.5 feet from the surface on the down stream ) 5 m 7.5 m 5 m
3 Problem 3 A dam for a reservoir is shown below. (a) If the dam is 150 m long (perpendicular to the plane of the paper), how much water is

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## This note was uploaded on 10/29/2011 for the course CEG 3011 taught by Professor Staff during the Spring '07 term at FSU.

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CEG3011 Homework 7 - CEG 3011 Spring 2010 Soil Mechanics...

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