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-s' <br /> � <br /> . � <br />� <br /> ox� Two-��vvaR.Y xEsronvrraL avrr.�nvc r �cooK Booiq . <br /> 4 APPRO CH � . ' <br /> .:::. ' <br /> MAX WI�TDOW AND DOOR AREA AS A PERCENi'OF OVERALL WALL <br /> AREA �, � . <br /> � <br /> Cavi Window'U Factor <br /> Fratnin Insulation Sheathin 0.49 0.36 0.31 0.27 � <br /> --� . . <br /> ST ARD R-13 R - 7 13.496 17.896 21.396 24.396 <br /> ST ARD ' R 13 R-5 12.496 16.496 19.796 22.596 <br /> S1' R-15 > R -5 12.9% 17.196 20.196 23.496 • <br /> STA R-18 < R-5 12.196 16.096 18.896 22.096 <br /> ST RD R-18 > R •5 14.096 18.696 21.896 25.396 . <br /> �ADV CED R-18 <R-5 12.996 17.196 20.196 23.496 � <br /> ADV CED ' R-18 > R -5 14.596 19.296 22.596 26.196 <br /> STAN RD R-21 < R - 5 12.896 17.096 19.990 23.196 <br /> STA R 21 R -5 14.596 19.396 22.596 26.196 <br /> • ADV CED ' R-21 < R - 5 13.696 18.196 21.296 24.696 <br /> i� , ADV CED �� R-21 > R -5 15.096 • 19.996 23.296 26.996 <br /> ; <br /> . ; <br /> STAND RD R-17 < R - 5 11.996 15.796 18.496 21.596 <br /> STAND RD R-17 > R - 5 13.896 18.496 21.596 25.096 <br /> ADV �, R-17 < R-5 12.69L 16.896 � 19.696 22.996 . <br /> ADV R-17 > R -5 14.396 19.096 22.296 25.796 <br /> • • Notes: _- ..�- <br /> ► ' ..� .�,,.� <br /> w111dOW � �8•1�011�1 ��1�R� 111�A1i8 �I18��i�0�1 Ckit�L�CS. <br /> Window -factor ust be determ�ned by either the National Fenestration Rating <br /> Council s rd 00-91, or A�SHRAE 1993 Handbook of Fundamentals, Clwpter 27, <br /> Table 5. j - <br /> �I , <br /> .��; �� '• . <br /> , <br /> ��� � <br /> � � <br />