Question

For the loading shown, choose the lightest wide-flanged section from Appendix B that will support the loads shown with out failing. Pa = 4 Kip, P2 = 10 Kip, P3=6 Kip. Jy = 33 ksi; Ty = 18 ksi. Use a factor of safety against yield of 1.5 for both normal and shear stress. Design criteria: 1st choose lowest weight, then lowest height. The support reactions at A and B are given as shown. P. Pe P3 s' judi 4 Îny 10,5 Ke By = 9,5 kig K 16' > O W12x26 O W14X26 W8X40 O W10X30

Answer 1

4 lo j 41- 4' 4 u' in My = 10.5 kip By = 9.5 kip 9.50 -4 (2-4) 10 (1-0)-6(2-12) Man 60X12 42X12 Bm D 30X12 esa Mmax = 60x12 Lip-inch] CScanned with CamScanner

m max allowble = Sax 33 60x12 = ( all Sxx fos [ Sony = 242-73.7 inch) inch Sxx = 32-724 inch) Qu) W 12 x 2.6 H 10x30 b) H 14826 Sxx = 32.4 inch ♡ W &x 40 d) W 10 X30 Hence оръон d. is correet. CS$canned with CamScanner