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'. WINTER' POINT MULTIPLIERS (WPM) CLIMATE ZONES 4 5 6 6A-10 WINTER OVERHANG FACTORS /WOF\ J OH RATIO I .00-.11 I .12-.17 .18-.26 1 .27-.35 I .36-.46 1 .47-.57 .58-.70 1 .71-.83 I .84-1.18 1.19-1.7211.73-2.73 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 EIW 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 t;a: S 1.00 .95 .92 .83 .70 .54 .36 .13 -.13 -.70 -.98 -1.09 m[ 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 EIW 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% ft. 2ft. 3ft. 3'hft. 4'12 ft. 5'h ft. 6'hft. 9'h 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 PM 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 BLOCK1 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 DOOR TYPE EXTERIOR ADJACENT WOOD 7.6 5.9 INSULATED 5.1 4.0 WPM) 6A-13 CEILING WINTER POINT MULTIPLIERS /wPM\ UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF R-VALUE WPM R-VALUE WPM CEILING TYPE 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 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 ::10 !l.lJn 4 RAISED WOO[)2 POST OR PIER STEM WALL wi UNDER CONSTRUCTION FLOOR INSULATION WPM WPM 79 lB 2.1 .7 1.5 .5 ADJACENT WPM 5.3 2.1 1.8 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 6.0-6.6 1.10 1.07 ?2 UNCONDITIONED SPACE 6.7 & Uo 1.09 1.06 'HAl SUPPLY DUCTS IN 4.2-5.9 1.10 1.00 CONDITIONED SPACE' 6.0-6.6 1.07 1.00 (;.-7 & UO 1M 1 nn 6A.17 HEATING SYSTEM MULTIPLIERS /HSM\ SYSTEM TYPE HEATING SYSTEM MULTIPLIERS /HSM\ 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 Slrio 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. 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-