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CONSTRUCTION R VALUr- <br /> CEILING SECTION (INSULATED) : <br /> 1 Interior air flim O•fl <br /> 2 <br /> 3 <br /> 3 4 4 Exterior air film (still) 0.(1 <br /> TOTAL R _ <br /> U = 1/R = <br /> ILING FRAMING SECTION: <br /> I 2 5 1 Interior air film 0•E�1 <br /> 2 . 0 <br /> AIR VENTED 3 1 <br /> 4 Interior air film still 0. <br /> FLOW -\k 11, inches soft wood � � <br /> TOTAL R <br /> U 1/R <br /> CEILING SECTION (INSULATED) : <br /> 1' interior air film 0•61 <br /> Z t �0f g(/I� ►Sb <br /> 3 - tL v 7-A <br /> ' - <br /> 4 Exterior air film still 0.61 <br /> TOTAL• R = -51 ?o <br /> 1' <br /> I 2 3 4 5 CEILING, FRAMING, SECTION: <br /> 1• Interior air film 0•f'1 <br /> VENTED 2 <br /> 3 <br /> 4 Exterior air film still n. 1 <br /> 5 Inches soft wood <br /> TOTAL R <br /> U 1/R = <br /> 3 4 5 <br /> `'�'"•'►`� 1 Inside air film <br /> • ;:t..•. <br /> • ='`. 2 <br /> S Outside air film x• 17 <br /> 2 TOTAL R = <br /> � U <br /> 17 <br />