Review Course Section Quiz 04

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1. A steel beam fixed at one end and simply supported at the other creates a unit stress of 7,500 psi under what change in temperature? The coefficient of expansion = 6.5 x 10-6 in/in-°F and the modulus of elasticity = 29,000,000psi.
2. A 10 ft cantilevered wood beam (E = 1,500,000 psi and I = 864 in4) is subjected to a uniform load of 10 kips/ft. What is the maximum deflection?
3. What is the deflection at the free end of a 18 ft. long cantilever steel beam with a point load of 12,000 lbs 8 feet from the free end? The beam is a W16x67, I = 954 in4, E = 29,000,000 psi
Use the following beam for questions 4 thru 7. L = 30ft, X = 12ft, and W = 25kips/ft. E = Modulus of Elasticity (for steel use 29,000 ksi). I = Moment of Inertia (in4) = 1330in4
4. What is the shear force at R1?
5. What is the shear force at R2?
6. What is the maximum bending moment?
7. What is the deflection at X?

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