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CONSTRUCTIQN R VALUE� ' , <br /> CEILIN� SECTIQN (INSULATED) : � <br /> � Interior ai� film �.F1 <br /> . 2 <br /> ' 3 <br /> 3 4 4 Exterior air fllm still) �.�1 <br /> TOTAL R = <br /> U � 1/R = <br />. � <br />� CEILING FRAMINC SECTION: <br /> � 2 5 1 Interior air film �.F1 <br /> � 2 <br /> q�R VENTED 3 <br /> 4 interior ai r fi lm sti i l �. 1 <br /> FLOW 5 inches soft wooci <br /> TOTAL R = <br /> ' Ua 1/R6 <br /> ' . CEILING SECTION (IMSULATED) : <br />�,�„�,��y��� g�.�����T�) 1' I n te r i or a i r f i 1 m 0.F 1 <br /> 2 <br /> � ' 3 � .. <br />� 4 Exterior air film stiil �. t <br />� T07AL R = <br /> ;/ '� �; U � 1/R a . <br /> E' �. <br /> I 2 3 4 5 cE���Nr, Fru�Mi�ir, sECTto��: <br /> 1• Intertor air film A.F1 <br /> VENTED 2 <br /> � 3 <br /> 4 Exterior air itm still �• 1 <br /> .� 5 tnches sof t wood <br /> 70TAL R = <br /> . • U = 1/R = <br /> 3 4 5 � � <br /> ,.,.�;;.� . . <br /> .:.• >� ::: •� - <br /> •• ���,Y••-:• ..:�:�. . , <br /> . , _, .:: .•:;�•.=''';,j' � . 1 Inside air f i lm �.�'1 <br /> '�,' Y�;F��'��,:• ••••• �� ,• � � ` ' . <br /> •�•-- - . 3 ' � <br /> . � � � y � � : <br /> / � � I 2 S Outside ai� ilm n, 17 <br /> � , TOTAL R � __,__ <br /> �,(� U � 1/R = �,_ <br /> 13 Page 4 <br />