Homework 5 Solution - 2011 - the left and right sides of...

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1 The University of Missouri-Columbia Department of Civil Engineering Assigned: Monday, Sept. 19, 2011 Due: Friday, Sept 23, 2011 CE 3400 - Homework No. 5 2-D Flow of Water Through Soils 1. Work Problem 8.2 in Coduto. 2. Work Problem 8.3 in Coduto (see figure below)
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2 3. Work Problem 8.8 in Coduto (see figure below)
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3 4. Consider the sheet pile wall shown below. Assume the water is 42 ft above the ground surface on the left side of the sheet pile and the wall penetrates 32 ft below the ground surface. Using the flow net shown below and assuming k=0.12 ft/day: a. Calculate the rate of flow under the sheet pile wall b. Calculate the water pressure at the locations indicated by the black dots on
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Unformatted text preview: the left and right sides of the wall. (a) d f N N h k q =0.12ft/day(42ft)(4/8)= 2.52 ft 3 /day/ft width ft h 42 (b) Head loss/line = 42ft/8=5.25 Using pile tip as elevation datum. Upsteam total head = 32+42=74 ft At left dot , head loss = 1*5.25 ft = 5.25 ft. Therefore, total head = 74-5.25=68.75ft h e =20 ft, therefore h p =48.75 ft u=48.75ft*62.4pcf = 3042 psf At right dot , head loss = 7*5.25 ft = 36.75 ft. Therefore, total head = 74-36.75=37.25 ft h e =20 ft, therefore h p =17.25 ft u=17.25ft*62.4pcf = 1076.4 psf 8 4 d f N N...
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This note was uploaded on 09/23/2011 for the course CIVIL ENGI CE 3400 taught by Professor Rosenblad during the Spring '11 term at Missouri (Mizzou).

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Homework 5 Solution - 2011 - the left and right sides of...

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