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�lTSTOM DESIGN & ENGINEERING, INC <br /> STRUCTURAL ANAI.YSIS& DESIGN <br /> Item 1C—Header @ sliding door (back-side) of house <br /> 570.0 Ib/ft <br /> 8.53' <br /> 27�7 4 x 12,DF No 2 2717 <br /> Load duration=Snow,Co=1.15 <br /> Live load =25.0,psf <br /> Dead load =15.0, psf <br /> Tributary width =14.25,ft <br /> Beam/Joist span,L =9.53 ft <br /> Design loads <br /> Max total moment,M=w L 2/8=570.00(9.53)Z/8=6475 ft-Ib <br /> fbx=M(12)/Sx=6475(12)/(73.8 in3)=1052 psi <br /> Max total shear, V=w L/2=570.00(9.53)/2=2717 Ib <br /> fv=1.5V/A=1.5(2717)/(39.4 in2)=103.50 psi <br /> Max total reaction,R=w L/2=570.00(9.53)/2=2717 Ib <br /> Beam design-4 x 12,DF No 2 <br /> Beam/Joist properties <br /> Area=39.38 inZ <br /> Sx=73.828 in3 <br /> Ix=415.2832 in4 <br /> E=1.60x106psi <br /> Check Bending <br /> Cr=1.�� <br /> CM=1.00 <br /> Cc =1.00 <br /> Cf =1.10 <br /> ` <br /> 11006 60T"AVE WEST-MUKILTEO WA 98275 <br /> PHONE (425)343-7517-FAX(425)493-8388 � g <br />