Laserfiche WebLink
� • <br />� , . <br />� �-�*'.,�� \, <br />� ONE- dz TWO-FAMILY RFSIDIIV'TTAL BLTILDING P (COOK-BOO� <br /> - APPROACH `� <br /> ' � <br /> MAXIMUM WINDOW AND DOOR AREA AS A PERCENT OF OVERALL WALL <br /> AREA <br /> From Minn. Rules part 7670 0475 subpart 2 iterri F <br /> Cavi Window U-Factor <br /> Framin Insulation Sheathin G.49 0.36 0.31 0.27 <br /> STANDARD R-13 > R - 7 1;j.4% 17.8% 21.3% ?4.3% <br /> STANDARD R-13 > R - 5 12.4% 16.4% 19.7% �.5% � <br /> STANDARD R-15 > R - 5 1�.9% 17.1% 20.1°/a 23.4% <br /> STANDARD R-18 < R - 5 12.1% 16.0% 18.8% 22,p°/u <br /> STANDARD R-18 > R - 5 1�.0% 18.6% 21.8% 25,3% <br /> ADVANCED R-18 < R - 5 12.9% 17.1% 20.1°la 23.4°0 <br /> ADVANCED R-18 > R - 5 1�.5°/a 19.2% 22.5% 26.1% <br /> STANDARD R-21 < R - 5 1'L.8% x' 17.0% 19.9% 23.1% ' <br /> STANDARD R-21 > R - 5 14.5°/a 19.3% 22.5% 26.1% <br /> ADVANCED R-21 < R - 5 13.6% 18.1% 21.2% 24.6% <br /> ADVANCED R-21 > R - 5 15.0% 19.9% 23.2% 26.9% <br /> Additional calculated values <br /> STANDARD R-17 < R - 5 11.9% 15.7°l0 18.4% 21.5% <br /> STANDARD R-17 > R - � 13.8% 18.4% 21.5% 25.0°/u <br /> ADVANCED R-17 < R - � 12.6% 16.8% 19.6% 22,9% <br /> ADVANCED R-17 > R - 5 14.3% 19.0% 22.2% 25.7% <br /> Notes: <br /> Window area equals rough opening minus installation clearances. <br /> Window,U-factor must be determined by either the National Fenestration Rating <br /> Council standard 100-91, or ASHRAE 1993 Handbook of Fundamentals, Chapter 27, <br /> Table 5. <br /> ' .� <br /> 4 <br /> _ __ _ <br />