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� CONSTRUCTI�N R VALUC <br /> CEILING SECTION (INSULATED) : <br /> 1 Interlor air film �,�,� <br /> . 2 '� � <br /> . <br /> 3 3, t L <br /> 3 4 4 Exterior air film still) �.�1 <br /> TOTAL R a �,,�� <br /> U - 1/R a <br /> � / � <br /> I 2 5 CEILING FRAMING SECTION: <br /> 1 Interior air film �,F� <br /> 2 �' y� � <br /> FQOW VENTED y Inte�ior air film still �.� 1 <br /> 5 inches soft woo�i ,3 <br /> TOTAL R = <br /> U = 1/R � <br /> ' � CEILING SECTiON (IFlSULATED) : <br /> ' '"�-��� ��� 1' Interior air film �.F� <br /> . 2 <br /> � 3 .. <br /> 4 F.xterior air film still �. 1 <br /> TOTAL R = <br /> � <br /> �1 `i, �, U a 1/R = <br /> I 2 3 4 5 CEILINr, FRAMIflP SECTION: <br /> 1� tnterior air film �,F�1 <br /> VENTED 2 <br /> � 3 <br /> • 4 Exterior air film still �. 1 <br /> 5 �nches soft wood <br /> TOTAL R = <br /> U = 1/R = <br /> 3 4 5 <br />� :, y- .;� ��' '�, <br /> . f _ %,. ••'}`:',*j:;: <:`, 1 Inside aTr film �.F1 <br /> ;; �%:�%�i• � ' 2 <br /> 3 . . <br /> 4 <br /> �� 5 Outside air fitm n, 17 <br /> � <br /> �� ' 2 TOTAL R � <br /> �� <br /> U � 1/R = <br /> Page 4 <br />