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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 T .27-.35 .36-.46 .47-.57 .58-.70 I .71-.83 I .84-1.18 1.19-1.7211.73-2.73 I 2.74+ SINGLE PANE GLASS --- N 1.00 1.03 1.05 1.08 1.10 1.13 1.15 1.18 71.20 ) 1.24 1.29 1.34 NElNW 1.00 1.07 1.10 1.15 1.20 1.25 1.30 1.35 1:39 1.50 1.59 1.67 Em 1.00 r.7V .57 .19 -.20 -.65 -1.05 -1.48 -2.03 -3.01 -4.06 -5.04 SElSW 1.00 .93 .90 .80 .68 .54 .39 .22 .05 -.33 -.71 -1.01 tia: S 1.00 1'.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 NElNW 1.00 1.11 1.16 1.24 1.32 1.41 1.48 1.56 1.63 1.80 1.94 2.08 Em 1.00 .88 .82 .66 .50 .31 .15 -.03 -.26 -.66 -1.10 -1.50 SElSW 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. 2 ft. 3ft. 3% ft. 4% ft. 5% ft. 6% 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 PM FRAME CONCRETE BLOCK' INT. INSULATION NORMAL WT. EXT ADJ 6.0 3.1 3.8 2.3 2.9 1.9 .3 1.5 1.1 .7 .5 6A.12 DOOR WINTER POINT MULTIPLIERS WI DOOR TYPE EXTERIOR ADJACENT WOOD 7.6 5.9 INSULATED dD @ PM) 6A-13 CEILING WINTER POINT MULTIPLIERS /WPM\ UNDER Arnc SINGLE ASSEMBLY CONCRETE DECK ROOF R-VALUE WP~ 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 'lflR.lln Ii RAISED WOOI)2 POST OR PIER STEM WALL wI UNDER CONSTRUCTION FLOOR INSULATION WPM WPM ~9 lB ~1 .7 1.5 .5 ADJACENT WPM 5.3 2.1 1.8 6A.15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) 6A-16 DUCT MULTIPLIERS IOM\ INFILTRATION PRACTICE WPM RETURN DUCTS RETURN DUCTS ISEE TABLE 6A.21 \ R-VALUE IN UNCONDITIONED SPACE IN CONDITIONED SPACE PRACTICE #1 6.2 '.' 4.2-5.9 1.14 1.10 PRACTICE #2 r4.1l SUPPLY DUCTS IN 6.0-6.6 n.l01 1.07 ?? UNCONDITIONED SPACE 6.7 & Un 1.09 1.06 SUPPLY DUCTSIN 4.2-5.9 1.10 1.00 CONDITIONED SPACE' 6.0-6.6 1.07 1.00 R 7R. II'; 1M 1M 6A-17 HEATING SYSTEM MULTIPLIERS IHSM\ SYSTEM TYPE HEATING SYSTEMMUL TIPLlE~S 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 -HQM .53 .50 1\ .4Q ~ .46 .43 .41 .38 .36 -H~PF 9.90-10.39 10.40-10.l!L ~~0-11.39 ".4Q~".89 11.90-12.39 12.40 & un 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 Slrin 1.0 Gas & LP Gas 1.0lSee Table 6A-18 for Credil Multinlier\ 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.