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Larson Engineering,Inc. SUBJECT: U.S. CUStOf115& SHEET NO. C-23 <br /> 575�Phantom Dmq Suite 2�� Border Protection PROJECT NO 51090137.000 <br /> ' ' Sl.Louis,M0630<2�2455 part Anaeles WA BY f��/ DATE 4121/2009 <br /> 714.7J1.4710 Fax: 714JJ7.4712 <br /> www.larsonengrmm � <br /> � Larson <br /> ALLOIVABLE C[FL[CTIONS 8 STRESSES Shoet B72 613 <br /> Allowa6le Wlnd Load Stress(6005-T5 AI.,Spec.No.11): <br /> Ly <br /> . S� — 5=52.81 <br /> ry <br /> 87000 <br /> Fy,p:= i{�S 5 21,27•ksl,if�5 5 79,23.9�ksl – 0.124�ksi•S, Z •ksi <br /> � � S <br /> F�,K�t=17.4ks1 <br /> Allowable Wind Load Stress(6005-T5 AI.,Spec.No.75): <br /> b b b 182 <br /> Fb+c15�- I�– 5 6.5,21•ksl,if�– 510,27.3•ksi –0.93ksi•–,b•ksl � <br /> t t t <br /> t <br /> Fc.t5=17.3ks1 <br /> f6,,:= min�Fhx��,Fp„�5� Py,= 17.3�ksi <br /> hllowablo Wind Load Stress(6005-T5 AI.,Spec.No.il): <br /> Ly <br /> 5:= — 5=52.81 <br /> fy <br /> 87��0 <br /> Fyy»:= If�5521,21•ksl,if�S579,23.9•ksl -0.124ks1•S, Z •ksll <br /> l S � <br /> F�,y;�=17.h•ksl <br /> Allowable Wind Load Stress(6005-T5 AI.,Spoc.No.15): <br /> �b �b 6 182 <br /> Fyy�y= I – 5 6.5,21•ksi,i – S 10,27.3•ksl –0.93•ksl•–,b•ksi� <br /> t t t <br /> t <br /> Fby75=17.3•ksi <br /> Fyy:= min�Fyy,y,Fyyis) Fby=17.3•ksl <br />