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r . <br /> CONS7RUCT10N R VALUC , <br /> CE1I.ING SECTIQN (INSULATED) : <br /> � interior air film (1.�1 <br /> � 2 �,��r <br /> 3 �. �' <br /> 3 4 4 Exterlor a1r flim stilll �.�1 <br /> TOTAL R = ��} " S� <br /> U � 1/R = <br /> CEILING FRAHIPtG SECTION: <br /> � 2 5 1 Inte�ior ai r fi lm ft.Fl <br /> � 2 <br /> A�R VENTED 3 <br /> 4 Interior air film stili �. 1 <br /> FLOW 5 inches soft woo�i <br /> TOTAL R a <br /> ' U = 1/R = <br /> • <br /> ' . CEILItJG SECTION (1FlSULATED) : <br /> ������ _ „�gg���;� 1' Interior air film �•F1 <br /> 2 <br /> � - 3 � .. <br /> 4 Exterior air film still �. 1 <br /> TOTAL R = <br /> � � ua i/R = <br /> /,� �_ �' <br /> I 2 3 4 5 CEILtNr, FRAMI�!(; SECTIOfI: <br /> 1• Interior air film �.�1 <br /> VENTED 2 � <br /> � 3 <br /> 4 Exterior air film still �. 1 <br /> 5 Jnches soft wood <br /> TOTAL R = <br /> • U = 1/R = <br /> 3 4 5 � � <br /> � ,� •t-�':':" •�•`•Y ','.t `. Y, i Inside atr f i lm t1 �1 <br /> �� •! • '~i 2 . <br /> :; �'' . � � . 3 • � � <br /> . � � <br /> /// 5 Outside air film �• » <br /> �/�`' � 2 TOTAL R � <br /> %/ <br /> ��, U � 1/R ` - <br /> 13 Page 4 <br />