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Larson Engineering,Inc. SUBJECT: U.S. CUSlOn1S 8� SH�'T NO C-7 <br /> 5757 Phantom Dnve.Suite 200 Border Protection PROJECT NO. 51090137.000 <br /> � � SL Louis,M063042-2d55 pOR Af1q0125 WA BY RV DATE 4121/2009 <br /> J147]1.4710 FaX. 3147314772 <br /> whv.�larsonengcmm <br /> � Larson <br /> 2 5/8 x 4"x 3/16" ANGLE TOP TIZACK DESIGN <br /> Roef Wlnd Load: WL� =28.8•psf <br /> Total Roof�oad: TRL=31•psf <br /> W <br /> � W <br /> 7ributaryYJidth: tw:= 2 tw=48•in <br /> Length betweon supports: Lg:= 48�In <br /> Unbrac:d Langth (fastener spar.ing): Ly� 18�In <br /> Lenyfi . <br /> SECTION PROPERTIES 2 5/8 x 2 518 x 3/16"ALUht ANGLE-Conservativ., ChecF <br /> f6063-T6)Shcot A1: <br /> 5,,:= 0.335•in3 IK:= 0.636•In4 r�:= O.di8l�in <br /> Sy= �„ ly:= I, ry:= r. <br /> 3 <br /> E:= ?0100•k,i t:= 16•In b:= 2.625•In <br /> A:= 0.9492•In2 k:= 1.0 <br /> CHECK eENDING 8ETIVEEN SUPPCRTS(Sheets 82-831 <br /> w�:_ (TRL)•tw w�=124 plf <br /> wz:= tw•14L� vrz=115.2•plf <br /> J w= ma�w�,wz� w=124pif <br /> � ;G 2'-' <br /> —�— <br /> I N�mar:= 0.725•w•Lg2 Mmax=Z`18•Ibf•fC <br /> Mmax <br /> py� � fy=8.88•ksi <br /> � Ly Lb �b 87000 <br /> '`'�'-'' F i — 5 22,15•ksl,i — <_94,76.7•ksl - 0.073•ksl•—, •ksi <br /> m= �r � 2 <br /> ry ry �rY� <br /> �_I -. <br /> Fs� = 15.1•ksi <br />