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CONS7RUCTION R VALUC• � <br /> CElLtt�G SECTiQ�� (f��SULATED) : <br /> - � lnterior atr ftlm cl.f��i <br /> . 2 .� <br /> 3 -y'� <br /> 3 4 � Exterio� air filn (stil ( ) �.�1 <br /> T�TAL R = r 7 <br /> u - t/R = .03 <br /> / \ CE1L(NG FRAH1l�G SECTION: <br /> � 2 �J 1 Interior air film �•�� <br /> ' 2 �� � <br /> AIR VENTED � Interior air film still �. 1 <br /> FLOW 5 ��� inches sor't woa�i `,3 <br /> TOTAL R � ,i3 <br /> . U = i/R = �Q�- <br /> ' . <br /> � � CcILING SECT10tt (I�tSULATED) : <br /> -���'y����`'�'cs�"�=--�'3�:�`.�=�1 <br /> 1' lnterior air film ��F� <br /> 2 � �� <br /> - 3 _ � .. <br /> 4 Fxterior air film still �• � <br /> T07AL R = � <br /> � • `� U a 1/R = .� <br /> / �- �, <br /> I 2 3 4 5 CE I L f Nr, FRAH i N� SECT!O�t: . <br /> �• Interior air fiim �•�'� <br /> VENTED 2 ' <br /> . 3 - (� <br /> 4 Exterior air fiim still �• � <br /> ' S fY, tnches soft wood � <br /> TOTAL R = ,CaS� <br /> U = 1/R = � <br /> 3 4 5 . <br /> . - <br /> -,, ��=' '" �� ' ,� `. 1 lnside air film � �'1 <br /> ., �' �'` � _ 2 <br /> :;i�';;%- � 3 • � <br />� . � � n. 17 <br /> �� � 5 Outside air film — <br /> � 2 TOTAL R � <br /> '� , U - 1/R � — <br /> � <br /> 18 <br />