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CONSTRUCTION R VALUE <br /> • <br /> CEILING SECTION (INSULATED) : <br /> 1 Interior air film 0.61 <br /> © Q 4 Exterior air film (still ) ��1 ,�' <br /> TOTAL R = <br /> th <br /> , �'' U = 1/R ` , C-),. <br /> 4 i .I <br /> o f% CEILING FRAMING SECTION: <br /> t� e © 1 Interior air film O.61 <br /> 2 4PL, CoYp7 CSD S1<- <br /> AIR VENTED 3 '/A •, Cc;LLu c 3/•V <br /> 4 Interior air film (still) 0.A1 <br /> FLOW 5 .3V,2 " inches soft wood 4_/„3 j <br /> TOTAL R =37 /3 <br /> U = 1/R = C 7 <br /> • <br /> ' CEILING SECTION (INSULATED) : <br /> t_&,,, —.., .��,_ 2,„�g� 1' Interior air film 0.61 <br /> 4 Exterior air film (still) 0.61 <br /> aTOTAL R = <br /> alL <br /> iv '11± <br /> U a 1/R = <br /> 0 0 O 0 0 CEILING FRAMING SECTION: <br /> 1. Interior air film 0.61 <br /> VENTED 2 <br /> 3 <br /> 4 Exterior air film (still ) n.(71 <br /> • <br /> 5 inches soft wood — <br /> TOTAL R = <br /> • U = 1/R = <br /> © 4 4 • <br /> 'ye, -``� 1 Inside air film 0•,1 <br /> = i 3 <br /> 4 <br /> / 5 Outside air film <br /> TOTAL R I17 <br /> y/ O © <br /> ,C- U - 1/R - __ <br /> 13 Page 4 <br />