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Unformatted text preview: L r b 8 a A 2 p 2 E s y b a K L r b 3 8 a A 2 p 2 E s y b 3 Try L 4.76 m L r 93.151 L r 6 L c r P 890 kN ; Therefore L max L L max 6.41 m P allow A s allow P allow 561.6 kN Problem 11.9-17 Find the required outside diameter d for a steel pipe column (see figure) of length L 20 ft that is pinned at both ends and must support an axial load P 25 k. Assume that the wall thickness t is equal to d /20. (Use E 29,000 ksi and .) Probs. 11.9-17 through 11.9-20 s Y 36 ksi t d 11Ch11.qxd 9/27/08 2:27 PM Page 900...
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- Fall '11