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586_Mechanics Homework Mechanics of Materials Solution

# 586_Mechanics Homework Mechanics of Materials Solution - gm...

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Unformatted text preview: gm; 5. 103 A 240-kN load is to be supported at the center of the 5—111 Span shown. Knowing PROBLEM 5.103 that 1the allowable normal stress for the steel used is 165 MPa, determine (a) the smailest allowable length lofbeam CD ifthe W 310 x 74 beamAB is not to be ( unstressed, (b) the W shape which should be used for beam CD. Neglect the weight of both beams. sow-non For roiled she} sad-ion w alone a? beem AB 5 = 1060 I10’ mm‘ =- Ioeouro" m3 6'.“ = I65 MFA. -. ICS'IID‘ Pa MPowaJu’e bending mono-d m, -.- \$5" -; (losowo")(|g§x;o‘ ) : I‘Mﬂx'lo’ Mr»: L ] l._ J r = ma lad-m [ﬂ (9.} Beam AB ...J . Area. A 'RC 0‘? since» a'fasram 1' {20 a. m1 Beuolc‘na meme-«f ed C IQO a. L ' MD a. 9 I74. 9 = l-4575 M f Geomv‘h‘j: ind-9:5" 9:541; = 2.085'm eel ﬂ (5) Bear-n CD (sn;.lp.;.+ E) H Area C +:: E a? shew- alianmm ( ' r (1.0425302mt I251! w..." ﬂ Bending momew'!’ ed E .J D - [2.5.31‘105 NW! 1 1 753.2uo’ m‘ D ‘B - . W4") '46.: i W360 I528 wunounm an ‘ } W310 v 60 E W250)! 6'7 Wfoor 86 ...
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