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. • ' , , • <br /> - �'S- <br /> CONSTRl1CTi�N R VALUC � <br /> ' ---_ <br /> CEILINr SECTION (INSULnTED) : <br /> 1 ��terior air film � �� <br /> . � 2 �, r- �. <br /> _ ' 3 � '-,� ��'' ,r<_ , <br /> 3 4 4 Exterio� air f11m (stilll �,�� <br /> TOTAL R = � � � <br /> U = 1/R a , rl? ' <br /> � \ <br /> I 2 5 CEILING FRAMING SECTION: <br /> 1 Interior air film �,�� <br /> 2 �� <br /> AIR VENTED 3 :�� . .�, .,.� . � ,_ <br /> FLOW 4 Interior air film still ri, � <br /> 5 ' �nches 5of t wooci <br /> ' � TOTAL R = ,; � <br /> � U = 1/R = ,.�1��:. , <br /> CEILING SECTION (I�lSUTATED) : <br /> t'�-�s�-�����'��"'�='=���3`t`�� 1' I n t e r i o r a i r f i l m �.F 1 <br /> 2 <br /> � 3 <br /> 4 F.xterior air film still �, 1 <br /> TOTA� R = <br /> `� � <br /> �/ � ;� U = 1/R s <br /> � , .:. <br /> I 2 3 4 5 <br /> CEtL(N� FRAMINr, SECTION: <br /> 1• Interior air film �,F1 <br /> VENTED 2 <br /> 3 <br /> • 4 Exterior air film still �. I <br /> S 1 nches sof t r�ood <br /> TOTAL R = <br /> U � 1/Ra <br /> 3 4 5 <br /> i~a q L .i� `ti. <br /> "�'� •.. •�. ,� <br /> %• 1 Insicie ai� film n �1 <br /> ;; ::�, i/,C1� 3 <br /> % <br /> . � <br /> �� � 2 S Outsidc air film �. 17 <br /> �� TOT/1L R = <br /> � ;. <br /> U = 1/R � <br /> o___ , <br />