Unformatted text preview: 8.1 An overhanging W250 X 58 rolledsteel beam supports two loads as shown.
PROBLEM 8.2 Knowing that P = 400 kN, a = 0.25 m, and can = 250 We, determine (a) the maximum value of the normal stress 0,,r in the beam, (b) the maximum value of the principal stress am at the junction of aﬂange and the web, (c) whether the speciﬁed
shape is acceptable as far as these two stresses are ccncemed.. 8.2 Solve Prob. 8.1, assuming that P = 200 RN and a = 0.5 m. NIM = Zoo w = memo3 N
”‘4‘...” '' CROOVIOSXO£3 ‘= IOCZH‘t’O3 Nw:
For W250¥58 Poijeol 5+9?) Star/Hort 0' T 252 MM be?“ 203 MM t]: = I3.$mm.
“by? 3.0 mm If" 37.3HO‘MM" Sg= 6633‘3103 MM: c = 3‘»! = nae m.» 3.; cZF:112.5mm 3
(a) shtLﬂLm s £01914 : yapL3 «(0‘ Pa
5* “”0 =mq.3 MPa. 4
mloo m.» 63.“ eggs; r %g(m.33 ? l28.2‘+ M90. Ap ht; = (203)(':3.5) = 27405 W}
5!; ‘ $102+ 34,) = 1163.73 m. Q“ Ad? .— 32680x103m‘ = 326. 20x10" M3 WIWQL :eoowos 326.80xto“)
21g ‘: .............__  _  36 0‘ P = 4115 MP4
I. t.» (37.3K10“)(3 x 103 3 q H a, 6'
R UK?” + '11; = 13c3 MPq
e; _ 4
(lo) 61...“: {+12 — 172.0 MP“
(G) Since. 6‘...“ 4 250 "4.361.) 'W 250'53 is Maggigﬁ’g "" ...
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 Summer '10
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