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Unformatted text preview: 12100 Introduction to Civil and Environmental Engineering Homework 9. Please use three significant figures in your calculations. Spring 2008 Due: 23 April 2008 1. A large cylindrical storage tank has a diameter of 20 m and is filled to a depth of 9m. It has a valve at its base with a diameter of 35 cm and loss coefficient K of 2.4. How long will it take to drain half of the volume of the tank? A rectangular tank has plan dimensions of 3m by 5m and is filled to a depth of 6.4m. It has a valve at its base with a diameter of 24 cm and a loss coefficient K of 1.95. How long will it take for the fluid velocity to abate to onehalf of its original intensity? A cylindrical tank has a diameter of 12.5 feet and holds water with a depth of 27.2 feet. The tank has a 4inch diameter valve at its base (with a loss coefficient K of 3.75) that is opened for 19.1 seconds. Determine the volume of water, in gallons, that is discharged in that time period. 2. 3. 12100 Introduction to Civil and Environmental Engineering Homework 9. Grade Sheet Name: _____________________________________________ Total score: _____ P1. Geometry calculations Solution for time duration Unit conversions (if needed) 30 points total 10 15 5 _____ _____ _____ P2. Geometry calculations Solution for time duration Unit conversions (if needed) 30 points total 10 15 5 _____ _____ _____ P3. Geometry calculations Solution for volume Unit conversions (if needed) 40 points total 20 15 5 _____ _____ _____ ...
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This note was uploaded on 01/25/2010 for the course CE 12100 taught by Professor Irvin during the Spring '08 term at Carnegie Mellon.
 Spring '08
 irvin
 Environmental Engineering

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