ARC322 Quiz 9 2008

ARC322 Quiz 9 2008 - since steel is noncombustible? Steel...

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ARC322 Quiz 9 14 Points Name ________ KEY __________ 1. What is f b for a structural member where it is loaded normal to its strong axis for the purposes of ARC322? f b = 0.667 f y = 0.667 x 36,000 lb/in 2 = 24,000 lb/in 2 (rounded) 2. What is f b for a structural member where it is loaded normal to its weak axis for the purposes of ARC322? f b = 0.667 f y = 0.6 x 36,000 lb/in 2 = 22,000 lb/in 2 (rounded) 3. As carbon content increases, what generally happens to structural steel? A. Brittleness Increases B. Welding becomes more difficult 4. Why does steel sometimes require fireproofing from a structural point of view
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Unformatted text preview: since steel is noncombustible? Steel losses strength when it is heated. It seldom melts, but, it will deform. 5. Sketch the generic moment diagram for a simple beam with a concentrated load at its center. 6. What is the generic formula for deflection of a structural beam? Deflection D = (Constant x PL 3 )/EI 7. What are the two basic families of braced frames? A. Concentric B. Eccentric Steel wide flange beam and column without fireproofing that deformed due to excessive heat in the 2007 Lake Arrowhead Fire....
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