05-02ChapGere.0017

05-02ChapGere.0017 - d h 5 1 3 4 2 1 2 5 0.2937 S 2 S 1 d h...

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Solution 5.6-23 Beam with projections 320 CHAPTER 5 Stresses in Beams (Basic Topics) h b 9 d d h b 1 2 (1) O RIGINAL BEAM (2) B EAM WITH PROJECTIONS R ATIO OF SECTION MODULI E QUAL SECTION MODULI Set and solve numerically for . and d h 5 0 d h 5 0.6861 d h S 2 S 1 5 1 S 2 S 1 5 b [8 h 3 1 ( h 1 2 d ) 3 ] 9( h 1 2 d )( bh 2 ) 5 8 1 ¢ 1 1 2 d h 3 9 ¢ 1 1 2 d h S 2 5 I 2 c 2 5 b [8 h 3 1 ( h 1 2 d ) 3 ] 54( h 1 2 d ) c 2 5 h 2 1 d 5 1 2 ( h 1 2 d ) 5 b 108 [8 h 3 1 ( h 1 2 d ) 3 ] I 2 5 1 12 ¢ 8 b 9 h 3 1 1 12 ¢ b 9 ( h 1 2 d ) 3 I 1 5 bh 3 12 Ê c 1 5 h 2 Ê S 1 5 I 1 c 1 5 bh 2 6 Graph of versus Moment capacity is increased when Moment capacity is decreased when N OTES : when or and 0 is minimum when ¢ S 2 S 1 min 5 0.8399
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Unformatted text preview: d h 5 1 3 4 2 1 2 5 0.2937 S 2 S 1 d h 5 0.6861 1 1 2 d h 3 2 9 1 1 2 d h 1 8 5 S 2 S 1 5 1 d h 6 0.6861 d h 7 0.6861 d h S 2 S 1 1.000 0.25 0.8426 0.50 0.8889 0.75 1.0500 1.00 1.2963 S 2 S 1 d h d h 1.0 1.0 0.5 0.5 0.2937 0.6861 S 2 S 1 A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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