12-100hw4 - 12-100Introduction to Civil and Environmental...

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Unformatted text preview: 12-100Introduction to Civil and Environmental Engineering Spring 2008 Homework 4. Due: 13 February 2008 Please follow the instructions for homework preparation that were included in the course description. Use the grade sheet as the top sheet of your homework set, and staple the set together before turning it in. Free-body diagrams must accompany every calculation of equilibrium. Assume that every number provided is accurate to three significant figures. Problems 4 and 5 are in SI units; the basic unit of length is the meter, m, and the basic unit of force is the Newton, N; a stress of 1 N/m2is termed a Pascal, abbreviated Pa, and we often refer to 106Pa as a megaPascal, MPa. 1.Determine the highest bending stress that occurs in this beam, expressed in lb/in2. 2.Determine Pult, the force that brings this beam to failure, expressed in lb. The material failure stress ultis 3600 lb/in2....
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12-100hw4 - 12-100Introduction to Civil and Environmental...

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