Sample Exam 1 Fall 2007

Sample Exam 1 Fall 2007 - goui\r\ Nam: Problem#1 (25points)...

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Nam€: goui\r\ t0/23/07 Problem #1 (25 points) As shown below, a 2WT member (made of back-to-back structural tees) is used as a diagonal brace. The unfactored tensile loading is: dead load Pp = 50 kips, live load p; = 30 kips, and wind load Pw = 90 kips. cto" ! {nar.t 2WT9x17.5 (ASTM A992) Aqa-- |,-'4::'ltt'' A51z a, so tr1 . ,to u'' c=q. tu5 .* T.y:_* wfq ! \n,5 A.. -- !,15 i\z d V -r z,!1. . 4) PL %" (ASTM A'572 Cr 50) b) Fillet weld three sides Compute the factorcd tensile load, Po, using the appropriate LRFD load combination and determine ifthe design tensile strength ofthe 2WT member, $tPn, is adequate based on the limit states ofyield on the gross area and fracture on the net effective area. Indicate on the figure u/here these limit states are bcing checked. ?n. |,2P,+ o.5 PL{ L u Pv. 2\1u Calculate the block shear rupture design strength for thc gusset plate. With a sketch, indiaate the failure path being considered. Yiu.1 .ir?^' ,,1 Fre - (oq)(5ous, )(rrs '.') Lr ) ' {re4lc > P" "l I - ^ --r A rJ fia+',. dP^= D?5 1"1"''?B+-A't-/ 01>ru/5v A-. t- t lt , _ .," lt-. tJ,\, +LP^ t0.75)(LEfs, j(8,r5 ;^z) (o-u)12; )o\ k > e ol1 t) B:9 4p"-_ tf*;n (0.r,r. ..A.",o"!&,)., ur. F"A^rl \"'A*' ("lt"s)Lz)' r' r"" t-'+*rri'* A-. 4l' A'r-- (u"\l,,5')' 3 i"" 4?h. (''i5)fD,e(5otsr)(0, i'^t)+ t',o)(u5 rrr) () i^r)] 2'r\L P,. o! CEE460 Steel Structures I Exam #1
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Nane: a\\r+\ t0/23/07 Problem #2 (25 points) As shown below, a 2C member (made ofback-to-back channels) is used as a diagonal b'race. The unfactored tensile loading is: dead load Pe = 50 kips, live load PL - 30 kips, and wind load P1y = !0 kips. (Note
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Sample Exam 1 Fall 2007 - goui\r\ Nam: Problem#1 (25points)...

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