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CONSTRUCTI�N R VALUE ' <br /> CEILIN� SECTIQ�� (INSULATED) : <br /> � Interlor atr film (1.(�1 <br /> 2 <br /> ' 3 <br /> 3 4 4 Exterlor air film stiil ) �.�1 <br /> TOTAL R = <br /> U � 1/R � <br /> � / CEtLING FRANINf SECTION: <br /> � 2 'rJ 1 Interior air fitm �.F1 <br /> � 2 <br /> AIR VENTED 4 Intertor air fllm still �. I <br /> FLOW 5 inches sof t woo�i <br /> TOTAL R = <br /> ' U = 1/R = <br /> , , <br /> ' . CEILING SECTION (IFlSU�ATED) : <br /> ,��T�,���z.,���,,,o �.����,�� 1' interior air film �•F1 <br /> 2 <br /> � � 3 � .. <br />� 4 Exterior air film still �• 1 <br />� TOTAL R = <br /> ,l � � Us 1/R = <br /> �' <br /> i 2 3 4 5 CE I L I Nr, FRAM I Nr, SECT I ON: <br /> 1• Interior ai r film �•�1 <br /> VENTED 2 <br /> � 3 <br /> 4 Exterio� air film still �. 1 <br /> 5 tnches soft wood <br /> TOTAL R = <br /> • U = 1/R = <br /> 3 4 5 � . <br /> i i .�. .-: �;-<:` •''� `� �' , <br /> . , .,. •,::<"Y"��� 1 Inside air film �.�1 <br /> :; .%_-�',• .. � 3 . . . <br /> � � . <br /> / � ' 2 5 Outside air film _ �� �� <br /> � , 70TA1 R � _ <br /> / <br /> .C� U � 1/R � <br /> 13 Page 4 <br />