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CONSTRUCTION - R VALUC� <br /> CEILIN� SECTION (INSULATED) : <br /> � In erior air film Q.F1 <br /> 2 1 <br /> � 3 <br /> 3 4 4 Exter or air film still) �.�1 <br /> TOTAL R = <br /> U � 1/Rs1Q� <br /> F CEILING FRAMING SECTION: <br /> I 2 5 1 Intertor air film (1.f,1 <br /> Z <br /> VENTED ° <br /> AIR 3 <br /> 4 Interior air film stil ) �. 1 <br /> FLOW 5 i nches sof t wooci , <br /> TOTAL R = <br /> � U = i/R = �� <br /> CEILING SECT10 PJSULATED) : <br /> _„_ ���� __ __ ,�� 1' I r i o r a i r f i 1 m �•F 1 <br /> �•.,�:,� <br /> t� - <br /> 3 <br /> G 4 Exterior air film still �• 1 <br /> TOTAL R = <br /> f � U = 1/R = <br /> / � <br /> :i �. <br /> l 2 3 4 5 CEILINr, FRAMiN� SECTI . <br /> 1� Interior r film �•�1 <br /> VENTED 2 <br /> 3 <br /> Exterior air film still �• 1 <br /> 5 inches soft wood <br /> TOTAL R = <br /> . U = 1/R = <br /> 3 4 5 <br /> � "� ' ����' <br /> ;- '��,;�r```� � � 1 Inside air film n.�l <br /> :; ::;• /,1 3 • <br /> � 4 <br /> S Outside air film �• » <br /> ��`' ( 2 70TAL R = <br /> �,�, U = 1/R II <br /> ,/ <br /> Page 4 <br />