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CONS7RUCT10N R VALUC• � <br /> CElLitIG SECTION (INSULA7ED) : ' <br /> � !n[e ior air filn �•F� <br /> ' 2 s R Si�€E-���'/C <br /> 3 �--�R, �� �P����� � <br /> 3 4 � Exterior air filn (stiil ) �•F�1 <br /> � TOTAL R = <br /> U � 1/R = <br /> / CEtLING FRA1i1l1G SEC710H: <br /> � 2 5 1 Interior atr fiin � �.�1 <br /> , 2 <br /> AIR � VENTED � Interior air film still �. 1 <br /> FLOW � inches soft wooci <br /> TOTAL R = <br /> � U = 1/R = <br /> • . <br /> ' . CEILING SECTIOH (1NSULATED) : <br /> ���,�,�.��.�L�,.�������'�� 1' {n te r i or a i r f i 1 n � �•F� <br /> 2 <br /> � • 3 � .. <br /> 4 Exterior air film stili �• 1 <br /> TOTAL� R = <br /> � � U = 1/R = <br /> / }- <br /> i� <br /> � 2 3 4 5 CEILtNr, FRAHINc; SECT10ta: <br /> 1• Interior air film �•�� <br /> VENTED 2 <br /> • 3 <br /> 4 Extertor air film still �• 1 <br /> . � 5 tnches soft wood <br /> TOTAL R = <br /> . U = 1/R = <br /> 3 4 5 � � <br /> , _ . . <br /> ,• •L=' '"' '�'.:: ,•'. `• . � 1 Inside air film �.�T <br /> .�� %' �` _ 2 <br /> :.1�''�''�' . � � . 3 ' � � . <br /> . � n. 17 <br /> / � ' ( 2 S Outstde air film <br /> � TOTAL R � <br /> / <br /> �, U = 1/R � <br /> l� . <br />