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WINTER POINT MULTIPLIERS (WPM) CLIMATE ZONES 4 5 6 6A.10 WINTER OVERHANG FACTORS (WOF) J OH RATIO .00-.11 I .12-.17 I .18-.26 I .27-.35 I .36-.46 I .47-.57 .58-.70 I .71-.83 I .84-1.18 1.19-1.72 1.73-2.73 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 E/W 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 E/W 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. 1'12 ft. 2ft. 3ft. 3'12 ft. 4'12 ft. 5'12 ft. 6'12 ft. 9'12 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 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 R.VALUE 0-6.9 7-10.9 11-12.9 13-18.9 19-25.9 26& U 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 IWPMI DOOR TYPE EXTERIOR ADJACENT UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF R-VALUE 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 &Uo .4 .3 38 & Uo .4 26-29.9 .6 ::IOR.lln .:1 6A-14 FLOOR WINTER POINT MULTIPLIERS /WPMI SLAB-ON.GRADE FIll:! RAISED !i;iiii!! RAISED WOOI)2 POST OR PIER STEM WALL wi UNDER EDGE INSULATION iH! CONCRETE ii.ii.i; CONSTRUCTION FLOOR INSULATION ADJACENT R-VALUE WPM R-VALUE WPM !i;i; R.VALUE WPM WPM WPM 0-2.9 2.5 Tn 0-2.9 4.0 0-6.9 7.9 1.8 5.3 3-4.9 -1.7 Iii!; 3-4.9 1.8 i.i: 7-10.9 2.1 .7 2.1 5-6.9 -2.4 IHH!! 5-6.9 1.1 ill.!i 11-18.9 1.5 .5 1.8 7 R. Iln -?7 liT 7 R.lln R ii HIR.lln !:J ::I 10 WPM) 6A-16 DUCT MULTIPLIERS IOM\ INFILTRATION PRACTICE WPM RETURN DUCTS RETURN DUCTS (SEE TABLE 6A-21\ R-VALUE IN UNCONDITIONED SPACE IN CONDITIONED SPACE PRACTICE #1 6.2 SUPPLY DUCTS IN 4.2-5.9 1.14 1.10 PRACTICE #2 4.1 UNCONDITIONED SPACE 6.0-6.6 1.10 1.07 ?? 6.7 & Uo 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 R. lln 1M 100 6A-17 HEATING SYSTEM MULTIPLIERS IHSMI SYSTEM TYPE HEATING SYSTEM MULTIPLIERS IHSM\ 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 & uo 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 Strio 1.0 Gas & LP Gas 1.0 (See Table 6A-18 lor Credit Multiolier\ 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. 6A.15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) 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.