870_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

# 870_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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864 CHAPTER 11 Columns Solution 11.4-2 Steel pipe column (1) P INNED - PINNED P cr ± p 2 EI L 2 ± 62.2 kN ; I ± p 64 ( d 4 2 ² d 4 1 ) ± 43.22 * 10 3 mm 4 L ± 1.2 m d 2 ± 40 mm d 1 ± 36 mm E ± 210 GPa (2) F IXED - FREE (3) F IXED - PINNED (4) F IXED - FIXED P cr ± 4 p 2 EI L 2 ± 249 kN ; P cr ± 2.046 p 2 EI L 2 ± 127 kN ; P cr ± p 2 EI 4 L 2 ± 15.6 kN ; Problem 11.4-3 A wide-flange steel column ( E ± 30 ³ 10 6 psi) of W 12 ³ 87 shape (see figure) has length L ± 28 ft. It is supported only at the ends and may buckle in any direction. Calculate the allowable load P allow based upon the critical load with a factor of safety n ± 2.5. Consider the following end conditions: (1) pinned-pinned, (2) fixed-free, (3) fixed-pinned, and (4) fixed-fixed.
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## This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.

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