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� <br /> • - . CONSTRUCTI�N R VALUC <br /> - CE 1 l I NG SECTI Otl (I MSULATED) : <br /> . � Intertor at� f lm �,�,� <br /> . 3 �, _� <br /> 3 4 4 Exterioc air fllm still) �.�1 / <br /> TOTAL R = ,7� <br /> � . U - 1/R ` ,�l� <br /> � . . <br /> a � 2 5 CEfLING FRAHING SECTION: <br /> 1 Inte�lor air film �,�,� <br /> 2 t9 � t/z ,� <br /> � AIR VENTED 3 -�'���— l�o -- <br /> � 4 inte ior ai r fi )m sti 11 �, 1 <br /> ' FLOW <br /> � 5 a inches soft wooci ��?J <br /> � TOTAL R a <br /> U = 1/R = o'� �� <br /> ' . CEILING SECTION (INSULATED) : <br /> �`h=��",��ys�°a� `r �-.����y _�� 1' I n te r i or a i r f i 1 m �,F t <br /> . 2 <br /> i � 3 � .. <br /> � 4 Exterior air film still �. l <br /> TOTAL�R = <br /> � <br /> � U ` 1/R = <br /> �• � � <br /> �. <br /> I . 2 3 4 5 CEILlNr, FRAHI!!R SECTION: � <br /> 1• Interior ai r fi lm A.F1 <br /> VENTED 2 <br /> � 3 <br /> � • � Exterio� air fi )m still �. 1 <br /> � 5 Jnches soft wood <br /> � TOTAL R = <br /> • U a 1/R � <br /> 3 4 5 . <br /> � ..,, .,: ::':3'�'=�;`. _ . <br /> • ` .. ''t•�r:':�i'.��' ��� . <br /> •::�.=�:'•f;' ''`��~ 1 Inside atr film �.�1 <br /> �� ���j��• ., ,. � � - <br /> ',...... . . <br /> . . - . 3 • • - <br /> . � � � y'� � <br /> �� ( 2 S Outside air film �. 17 <br /> � . TOTAL R � __ <br /> � U � 1/R = <br /> , -, — <br />