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CONSTRUCTION R VALUC <br /> CEILING SECTION (INSULATED) : <br /> I Interior air film (-). 12 `,/b (_( • , c',„3 L ; , r__ ��: S ,c)-1) <br /> i/''..I...........-I----: . <br /> Q 4 Exterior air film (still ) 0.(,1 <br /> TOTAL R = 1 ,7F <br /> Li' <br /> � U " 1/R " .DIi <br /> • <br /> • ��� CEILING FRAMING SECTION: O E+1 <br /> O O ® 1 Interior air film <br /> 2 54 'r <br /> .S <br /> 3 tvsoIA So . <br /> AIR VENTED 4 Interior air film (still ) 0.61 <br /> FLOW <br /> ----ir 5 3'/z_ inches soft wood y,35 <br /> TOTAL R =5p, 0 <br /> U = 1/R = . bil <br /> __ <br /> CEILING SECTION (INSULATED) : 0 F1 <br /> ‘.,L,-,-..;•-_,...4 <br /> -'�, .-.AL:: ;,-,_..-z 1• Interior air film <br /> j 2 <br /> 3 <br /> 4 Exterior air film (still ) 0.61 <br /> TOTAL R = <br /> �' f✓1 U 1/R -- <br /> O O 0 ® © CEILING FRAMING SECTION: <br /> 1• Interior air film O.(,1 <br /> VENTED 2 <br /> 3 (1. 14 Exterior air film (still ) <br /> • 5 Inches soft wood <br /> TOTAL R = <br /> U = 1/R = <br /> / .ro_3" <br /> tr •. '. <br /> : <br /> ..... <br /> '. i•" :* '" 1 ,Inside air film n.rl <br /> 5 Outs {de air film n• 17 <br /> /,�/� O © TOTAL R ..�,/ U - 1/R - <br /> 18 <br />