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y J � � r <br /> r . <br /> „ r <br /> , ' �� � . <br /> �,�. 5r O F M I I�tN ESOTA <br /> . . <br /> . <br /> CONSTRUCTION: R-VALUE : <br /> � -------------------------- <br /> CEILING SECTION ( INSUL . ) : <br /> 1 ) INTERIOR AIR FILM � 0 . 610 <br /> 2 ) 5/8 " DRYWALL 0 . 450 <br /> 3 ) 14 " BLOWN INSL . 44 . 000 <br /> 4) EXT . AIR FILM ( STILL ) 0 . 610 <br /> 31 TOTAL R-VALUE : 45 . 670 ' <br /> J <br /> �� U = 1/R = 0 . 022 <br /> VEN TED CEILING FRAMING SECTION: <br /> " INTERIOR AIR FILM O . E'_0 <br /> 2 ) 5/8 " DRYWALL 0 . �5G <br /> 3 ) 10-1/2 " BLOWN INSL . 3� . 000 <br /> S� q�R 4 ) EXT . AIR FILM ( STILL) 0 . 610 <br /> ��l FLOV� � 3-1/2 ' ' SOFT WOOD a . 380 <br /> 2J TOTAL R-VALUE : 4� Q50 <br /> U = 1/R = O . Q23 <br /> . , <br /> � <br />