Class 22 - Concept of Shear Flow in Built-up Sections

Structural Analysis (6th Edition)

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Unformatted text preview: m 71%; ngifiw 5%. _ WWW—Wm,» {gag—3a: wag; Foww g gwgfifig , . 19 “$254323:ng fiamfigi‘; hm “if? 5 ,o [53: ‘ ggg 7, 1;@ if? afimfi 3% i Sgééqfi : w @M y? % W figafiiag 352 ms SiressesinBeams Problem 5311—4 A tax beam of weed is constructed 9f two 260 mm X 50 mm boards and two 260mm X 25 mm boards (see figure). The boards are nailed a? a iongitudinai spacing s :2 £00 m. If each nail has an aflowable shear force F == 12% N, what is the maximum allowabla shear farce Fm? 352 MS summaem Pmbiem 5.11-4 A be}: beam {3? wood is constructeci of two 260 mm X , 50 mmboards and two 260 mm X 25 mm beads. (see figure}. The boarés are nailed at a longitudinal spacing s = 100 m. If each naii has an aliowabie shear force F = 1280 N, what is the maximum allawabie shear force VM? ........................................................................................................................................................................................................................................................... Seaman 531-4 Wood box beam Afi dimensions in mifiimeters. fww = 3:: = W x 24 134/131 5 '~'—' 250 2’! = 263 W 2(593) = 169 V 3310 hi =26§ f=~§g Vm=fflgwf Swazi} sgacingzmfim I F "4 aflowahie shear force 3 ‘ 3 g 4 a ~—~» é - x a: . x far (me nail = 1289 N I 32 {bk 515‘) 11 325 20 m f m shear flow between {3135: flange {2 = Qflangfi a Aid!» = {260){25}{142.5} = 925,255 X 193 m3 and Mk webs :1 W ,1.me w {24 kam}{433.§25 >< 196 mmfi m Q 926.25 X 183 m3 = {8.7 m 4- ...
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