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� . CONSTRUCTIAN R VALUC <br /> CElLING SECTIAt� (INSULATEO) : <br /> � interio� a i r f i im �.(+1 <br /> 2 5 " 5y�� <br /> . 3 ���w o <br /> 3 4 4 Exterlor air ftim sti11) A•FI <br /> TOTAL R � t$,7$ <br /> '� U � 1/R - . �ZL <br /> • ' ' . <br />�r CEILING FRAMING SECTION: <br /> 1 � 2 5 1 Intertor air fitm �.F1 <br /> 2 N�N� . <br /> -q�R VENTED 3 � Ns��- . 3 ,� <br /> 4 Interior air film sti11 A. •I <br /> FLOW 5 � i nches sof t woocl ��S <br /> 70TAL R s ��3 <br /> ' U � 1/R � .GZS <br /> CE i L SEf,T I ON (t NSULATED) : <br /> ^ ,�.��,�� - _�q,�� i" 1 n i o r a i r f i 1 m �.�-��' <br /> �1�.:�r ' <br /> .� <br /> 1 . 4 Exte ' a i r f i lm ' 1 1 �• � <br />� _ TOTAL <br /> ;l ` U � 1/R • <br /> 1/ � � <br /> I 2 3 4 �J �E��� RqttlN� SEC710t�: . <br /> 1• Int 'or a i r f i im •�� <br /> VENTED 2 —'"�� � <br /> 3 � � <br /> 1� E�c or air film s � 1 <br /> !� inches sori wood � <br /> ` TO�AL R = <br /> . ' U = 1/R = <br /> � <br /> 3 4 5 � <br /> , <br />� L �� �� ` � // <br /> -, -,. • :;�. .. \�.. /�� �� <br /> T���S . `�� �f�.' _/ '• <br /> _� •.' 1 Inside �*�. film <br /> " _: =� i� ,� � 3 . ;.�„ — <br /> � / 4 ' �. + � <br /> �� � S Outside air film <br /> I� I 2 ,/ TOTaL R ��� <br /> �\ <br /> L• U - 1/R � _ <br /> ��ge ' <br /> .. <br />