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• � � • <br /> 1 <br /> . CONSTRUCTION R VALUE <br /> , _ CEILING SECTION (INSULATED) <br /> ( 1) IN'I'ERIOR AIR FILM 0.61 <br /> s (2) 5/8" GYPSUM BOARD 0.56 <br /> �-' (3) 12" BLC7GdN INSULATION 44.00 <br /> �• n (4) EXTERIOR AIR FILM (STILL) 0.61 <br /> �� TO'I'AL R = 4 5.7 8 <br /> � U = 1/R = .022 <br /> ►� _ <br /> 1 CEILING FRAMING SECTION: <br /> (1) INTERIOR AIR FILM 0.61 <br /> (2) 5/8" GYPSUM BOARD 0.56 <br /> (3) 8-1/2" BL,OWN INSULATION 31.17 <br /> . (4) EXTERIOR AIR FILM (STILL) 0.61 <br /> (5) 3-1/2�� SOFr wOOD 4.38 <br /> 'TOTAL R = 37.33 <br /> U = 1/R = .027 <br /> / 6 <br /> /�' � <br /> /� �'� <br /> �-__� � , � <br /> � , <br /> , <br /> _ . �� ;\; t <br /> � . <br /> . � <br /> + <br /> , <br /> � <br /> eT <br /> / , / <br /> 1 , <br /> � <br /> � . � � <br /> .��`.. .1-n.v <br /> 7 <br /> �� <br />