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CONSTRUCTION R VALUC <br /> CEILING SECTION (INSULATED) : <br /> 1 Interior air film O•F1 <br /> 2 <br /> 3 ., &14 .o <br /> 3 4 4 Exterior air film (still ) O.Al <br /> TOTAL R = 15621 <br /> U - 1/R - •DA <br /> r: / CEILING FRAMING SECTION: <br />, LO2 5 1 Interior air film n.61 <br /> 2 1e _f4e, rod - - <br /> AIR VENTED 3 61' Gg./iA6s� zzo <br /> 4 Interior air film still 0.61 <br /> FLOW 5 -"3—f inches soft wood 6.87 _ <br /> TOTAL R 3 <br /> U = 1/11 = .63 <br /> CEILING SECTION (INSULATED) : <br /> 1' Interior air film O.61 <br /> 2 <br /> 3 <br /> 4 Exterior air film stiil O.6 1 <br /> TOTALR = <br /> U <br /> I 2 3 4 5 CEILING FRAMING SECTION: <br /> I. Interior air film 0.61 - <br /> VENTED 2 <br /> 3 <br /> 4 Exterior air film still n. I <br /> 5 cinches soft wood <br /> TOTAL R = <br /> U = 1/R = <br /> 3 4 5 <br /> . .• �':��`•='+ '" / 1 Inside air film <br /> Outside air film x• 17 <br /> TOTAL R - <br /> �• U = 1/R = <br /> 13 Paize 4 <br />