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WINTER POINT MULTIPLIERS (WPM) CLIMATE ZONES 4 5 6 6A-10 WINTER OVERHANG FACTORS (WOF) J OH RATIO .00-.11 .12-.17 I .18-.26 1 .27-.35 I .36-.46 I .47-.57 .58..70 .71-.83 .84-1.18 11.19-1.7211.73-2.73 2.74+ SINGLE PANE GLASS N 1.00 1.03 1.05 1.08 1.10 1.13 1.15 1.18 1.20 1.24 1.29 1.34 NE/NW 1.00 1.07 1.10 1.15 1.20 1.25 1.30 1.35 1.39 1.50 1.59 1.67 EfN 1.00 .71 .57 .19 -.20 -.65 -1.05 -1.48 -2.03 -3.01 -4.06 -5.04 SE/SW 1.00 .93 .90 .80 .68 .54 .39 .22 .05 -.33 -.71 -1.01 tia: S 1.00 .95 .92 .83 .70 .54 .36 .13 -.13 -.70 -.98 -1.09 ~[ DOUBLE PANE GLASS N 1.00 1.05 1.07 1.11 1.14 1.18 1.21 1.24 1.28 1.34 1.40 1.47 NE/NW 1.00 1.11 1.16 1.24 1.32 1.41 1.48 1.56 1.63 1.80 1.94 2.08 EfN 1.00 .88 .82 .66 .50 .31 .15 -.03 -.26 -.66 -1.10 -1.50 SE/SW 1.00 .95 .92 .85 .76 .65 .54 .41 .28 -.01 -.30 -.52 S 1.00 .96 .94 .87 .78 .65 .51 .33 .13 -.30 -.51 -.60 OH LENGTH' Oft. 1 ft. 1'1, ft. 2ft. 3ft. 3% ft. 4% ft. 5% ft. 6'!, ft. 9% ft. 14ft. 20ft.+ 'TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT. BELOW THE OVERHANG. 6A-11 WALL WINTER POINT MULTIPLIERS WPM FRAME R-VALUE 0-6.9 7-10.9 11-12.9 13-18.9 19-25.9 26& U WOOD EXT ADJ 6.8 5.3 2.5 2.1 2.0 1.8 1.8 1.6 1.1 1.0 .7 .7 STEEL EXT ADJ 9.4 6.7 4.4 3.3 3.3 2.6 3.0 2.4 2.6 2.2 1.4 1.2 CONCRETE BLOCK' INT. INSULATION NORMAL WT. EXT ADJ 6.0 3.1 3.8 2.3 2.9 1.9 2.3 1.5 1.5 1.1 .8 .7 .5 .5 6A-12 DOOR WINTER POINT MULTIPLIERS 6A-13 CEILING WINTER POINT MULTIPLIERS (WPM) DOOR TYPE EXTERIOR ADJACENT UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF R-V ALUE WPM R-VALUE WPM CEILING TYPE WOOD 7.6 5.9 19-21.9 1.0 10-10.9 1.8 R-VALUE DROPPED EXPOSED 22-25.9 .9 11-12.9 1.6 10-13.9 1.2 1.3 INSULATED 5.1 4.0 26-29.9 .7 13-18.9 1.5 14-20.9 .7 .7 30-37.9 .6 19-25.9 1.1 21 & Up .4 .3 38 & Uo .4 26-29.9 .6 ::Inll. Iln II 6A-14 FLOOR WINTER POINT MULTIPLIERS (WPM) SLAB.ON.GRADE RAISED RAISED WOO02 EDGE INSULATION CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT CONSTRUCTION FLOOR INSULATION R-VALUE WPM R-VALUE WPM R-VALUE WPM WPM WPM 0-2.9 2.5 0-2.9 4.0 0-6.9 7.9 1.8 5.3 3-4.9 -1.7 3-4.9 1.8 7-10.9 2.1 .7 2.1 5-6.9 -2.4 5-6.9 1.1 11-18.9 1.5 .5 1.8 7 Il.IJn -?7 ::ii 7 Il.IJn R 1'1 Il. IIn Cl .3 1.0 WPM) 6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) INFILTRATION PRACTICE WPM SEE TABLE 6A-21 PRACTICE #1 6.2 PRACTICE #2 4.1 6A-16 DUCT MULTIPLIERS IOMl RETURN DUCTS RETURN DUCTS R-V ALUE IN UNCONDITIONED SPACE IN CONDITIONED SPACE SUPPLY DUCTS IN 4.2-5.9 1.14 1.10 UNCONDITIONED SPACE 6.0-6.6 1.10 1.07 6.7 & Up 1.09 1.06 SUPPLY DUCTS IN 4.2-5.9 1.10 1.00 CONDITIONED SPACE' 6.0-6.6 1.07 1.00 F; 7 Il.lln 1.06 100 6A-17 HEATING SYSTEM MULTIPLIERS IHSMl SYSTEM TYPE HEATING SYSTEM MULTIPLIERS IHSMl Central Heat HSPF 6.40-6.79 6.80-6.89 6.90-7.39 7.40-7.89 7.90-8.39 8.40-8.89 8.9-9.39 9.4-9.89 Pump Units HSM .53 .50 .49 .46 .43 .41 .38 .36 HSPF 9.90-10.39 10.40-10.89 10.90-11.39 11.40-11.89 11.90-12.39 12.40 & UP HSM .34 .33 .31 .30 .29 .28 PTHP COP 2.50-2.69 2.70-2.89 2.90-3.09 3.10-3.29 3.30-3.49 3.50-3.69 3.70-3.89 3.90-4.19 HSM .40 .37 .34 .32 .30 .29 .27 .26 Electric Strip 1.0 Gas & LP Gas 1.0 (See Table 6A-18 for Credit Multiolierl MINIMUMS: CENTRAL UNITS-AIR SOURCE SPLIT SYSTEM 6.8 HSPF, SINGLE PKG. 6.6 HSPF, WATER SOURCE 3.8 COP, GROUND WATER SOURCE 3.4 COP, PTHP SEE TABLES 6-6 TO 6-8. 1 FOR MULTIPLIERS FOR OTHER TYPES OF CONCRETE BLOCK CONSTRUCTION SEE SECTION 2.1 OF APPENDIX C. 2 MULTIPLIERS FOR OTHER TYPES OF RAISED WOOD ASSEMBLIES SEE SECTION 3.1 OF APPENDIX C. 3 DUCTS IN CONDITIONED SPACE NEED TO BE INSULATED ONLY TO THE R-VALUE NECESSARY TO PREVENT CONDENSATION. -5-