30_ch 14 Mechanical Design budynas_SM_ch14

30_ch 14 Mechanical Design budynas_SM_ch14 -...

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Table 14-6: S c = 225 000 psi ( Z N ) P = 0 . 8790, ( Z N ) G = 0 . 9358 ( σ c ,all ) P = 225 000(0 . 879) 1(0 . 85) = 232 676 psi W t 3 = ± 232 676 2300 ² 2 ³ 1 . 963(1 . 5)(0 . 195) 1(1 . 404)(1 . 043) ´ = 4013 lbf H 3 = 4013(925) 33 000 = 112 . 5hp ( σ c ,all ) G = 0 . 9358 0 . 8790 (232 676) = 247 711 psi W t 4 = ± 247 711 232 676 ² 2 ± 1 . 043 1 . 052 ² (4013) = 4509 lbf H 4 = 4509(925) 33 000 = 126 hp H rated = min(82 .
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