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, � <br /> CONSTRUCTION R VALUC• ; <br /> CEILINf; SECTIOt� (It�SULA7ED) : � <br /> � lnter.tor air fflm �•��1 <br /> ' 2 Q' C, y� Or (o <br /> ' 3 o u �oa z" • <br /> 3 4 � Exterio� air fllm still) �•�1 <br /> TOTAL R = 4S.7Q' <br /> U = 1/R = . Da) <br /> � CE1LtNG FRAH1Nr SECTION: <br /> I 2 5 1 Interior air film � �.�1 <br /> ' 2 � ��c� . G P�`Cn <br /> q�R � VENTED 4 Interior ai r 'f�i imt sti 11 �y� 1 <br /> FLOW 5 3 L inches sof c wooc� y.�c; <br /> _ TOTAL R = ��i? <br /> ' U = i/R = .C��q <br /> , . . <br /> ' . CEILING SECT10lt (IhlSULATED) : <br /> �����,,�,�� �p�q��T�. 1' I n te r i or a i r f i i m � �•F 1 <br /> 2 <br /> ' ' 3 � .. <br /> 4 Exterior air film still �• 1 <br /> TOTAL' R = <br /> � � ua ��R = . <br /> / }. �:, � � <br /> I _ 2 3 4 5 CEILINr, FRArtINr, SECTIOri: <br /> 1• Intertor air fiTm �.F1 <br /> VENTED 2 <br /> � 3 <br /> 4 Exterior air fiim still �• 1 <br /> ,� 5 lnches soft wood <br /> TOTAL R = <br /> . U � 1/R = <br /> 3 4 5 � • <br /> � ;.�:;•� - � <br /> • ti, . ;; ::'�. .► . <br /> � ,�. :.;..;.;.�:'�'.,• . <br /> .�_ ..: '',;�::=: ""' ' 1 �Inslde air film �.�1 <br /> :,;r?%%%•;• .. • . � � . � 3 . • � ' � : <br /> . t,.. . . <br /> S Outside air film �• 17 <br /> �� � 2 TOTAL R � <br /> � , U � 1/R = _ <br /> L <br /> 18 � <br />