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WINTER POINT MULTIPLIERS (WPM) CLIMATE ZONES 4 5 6 . ~ r' ~. , 6A-10 WINTER OVERHANG FACTORS (WOA OH RATIO I .00-.11 .12-.17 I .18-.26 I .27-.35 I .36-.46 .47-.57 .58-.70 I .71-.83 I .84-1.18 T 1.19-1.72 1.73-2.73 I 2.74+ SINGLE PANE GLASS ----"- N 1.00 1.03 1.05 1.08 1.10 1.13 1.15 1.18 ( 1.20) 1.24 1.29 1.34 NElNW 1.00 1.07 1.10 1.15 1.20 1.25 1.30 1.35 '.39 1.50 1.59 1.67 ENol 1.00 1':71./ .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 CD 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 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 ENol 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. lV. ft. 2ft. 3ft. 3V. ft. 4V.ft. 5V.ft. 6V.ft. 9V.ft. 14 ft. 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 WOOD EXT ADJ 6.8 5.3 2.5 2.1 2.0 .8 1.8 1. .7 CONCRETE BLOCK1 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 DOOR TYPE EXTERIOR ADJACENT WOOD 7.6 5.9 INSULATED @ GV WPM) 6A-13 CEILING WINTER POINT MULTIPLIERS (WPMI UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF R.VALUE WPM R.VALUE WPM CEILING TYPE 19-21.9 71.0) 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 30 & Uo .:I RAISED WOOI)2 POST OR PIER STEM WALL wI UNDER CONSTRUCTION FLOOR INSULATION WPM WPM 7.9 1.8 ~1 3 1.5 .5 ADJACENT WPM 5.3 2.1 1.8 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 roMI SUPPLY DUCTS IN CONDITIONED SPACE' R.VALUE 4.2-5.9 6.0-6.6 6.7 & UD 4.2-5.9 6.0-6.6 f\ 7 R. IJn RETURN DUCTS IN UNCONDITIONED SPACE 1.14 rl.l0J 1.09 1.10 1.07 1M RETURN DUCTS IN CONDITIONED SPACE 1.10 1.07 1.06 1.00 1.00 1M SUPPLY DUCTS IN UNCONDITIONED SPACE 6A-17 HEATING SYSTEM MULTIPLIERS IHSM\ ~TEM TYPE Central Heat Pump Units HEATING SYSTEM UUL TlPLlERS (HSMl~~~ ~~___~ n~_______ ~~~ 6.4~~~.79 6.8~5~.89 /If.9~p~ 7.4~~~._ 7.9~~~.~ 8.4~~f~ =-_~'~3~~~t.==4~(!~~ HSPF 9.90-10.39 10.40-10.89 10.90-11.39 ~l1A!U.18~_~1.90-12.~!L~2.40!Jm.._____~_______ HSM .34 .33 .31 .30 .29 .28 COP 2.50-2.69 230-2.89 2.90-3.09 3.10-3.?L 3.30-3.49 3.50-3.69 3oIO-3.8L- :_3.90-!...1~_ HSM .40 .37 .34 .32 .30 .29 .27~_ Electric Stno 1.0 Gas & lP Gas 1.01See Table 6A-l 8 for Credit MultiDlier) 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. PTHP 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 ONL YTO THE R-VALUE NECESSARYTO PREVENT CONDENSATION. .5.