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<br />WI'NTER POINT MULTIPLIERS (WPM)
<br />
<br />CLIMATE ZONES 4 5 6
<br />
<br />6A-10 WINTER OVERHANG FACTORS (WOF) -----
<br />J OH RATIO I .00-.11 I ,12-.17 I .18-.26 .27-.35 I .36-.46 I .47-,57 .58-.70 I .71-,83 I .84-1.18 11.19-1.7211.73-2.73 I 2.74+
<br /> SINGLE PANE GLASS
<br />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
<br />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
<br />EfW 1.00 .71 .57 .19 -,20 -.65 -1.05 -1.48 -2.03 -3.01 -4.06 -5.04
<br />SElSW 1.00 ,93 .90 .80 .68 .54 .39 ,22 ,05 -,33 -.71 -1.01
<br />till: S 1.00 .95 .92 .83 .70 .54 .36 .13 -.13 -.70 -.98 -1.09
<br />~[ DOUBLE PANE GLASS
<br />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
<br />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
<br />EfW 1.00 .88 .82 ,66 .50 .31 .15 -.03 -.26 -.66 -1.10 -1.50
<br />SElSW 1.00 .95 .92 .85 .76 .65 .54 .41 .28 -.01 -.30 -.52
<br />S 1.00 .96 .94 .87 .78 .65 .51 .33 .13 -.30 -.51 -.60
<br />OH LENGTH> Oft. 1 ft. 1'h ft. 2ft. 3ft. 3'h ft. 4'h ft. 5'h ft, 6'h ft. 9'hft. 14ft. 2Oft.+
<br /> 'TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT, BELOW THE OVERHANG,
<br />
<br />6A.11 WALL WINTER POINT MULTIPLIERS IWPMI
<br /> FRAME CONCRETE BLOCK' FACE BRICK LOG
<br /> INT. INSULATION EXT. INSUL R-VALUE WOODFR +
<br /> WOOD STEEL NORMAL wr. NOR. wr. 0-6.9 7.0 611 CH
<br />R-VALUE EXT ADJ EXT ADJ R-VALUE EXT ADJ EXT 7-10.9 2.1 ,r' R-V ALUE EXT
<br />0-6.9 6,8 5.3 9,4 6.7 0-2.9 6,0 3.1 6,0 11-18.9 1.7 0-2.9 2.2
<br />7-10,9 2.5 2,1 4.4 3.3 3-4.9 3,8 2.3 2.8 19-25.9 1,0 3-6.9 1,2
<br />11-12.9 2.0 1.8 3.3 2.6 5-6,9 2.9 1.9 2,0 26 & Uo .6 7& Un .9
<br />13-18.9 1.8 1.6 3.0 2.4 7-10.9 2.3 1.5 1.5 R-VALUE BLOCK 811 CH
<br />lQ-'I\,!l 1.1 1.0 2.6 2,2 11-18.9 1.5 1.1 .8 0-2.9 3.7 R-VAIII~ ~YT
<br />26& Un .7 .7 1.4 1,2 19-25.9 .8 .7 3-6.9 2.6 0-2.9 1.2
<br /> 26 & Uo .5 .5 7-9,9 1.8 > 3-6,9 .9
<br /> 10 & Un 1.3 .. 7 R. Iln 7
<br />
<br />6A-12 DOOR WINTER POINT MULTIPLIERS 6A-13 CEILING WINTER POINT MULTIPLIERS (WPM)
<br />DOOR TYPE EXTERIOR ADJACENT UNDER ATIlC SINGLE ASSEMBLY CONCRETE DECK ROOFING
<br /> R-VALUE WPM R-VALUE WPM CEILING TYPE
<br />WOOD 7.6 5.9 19-219 1.0 10-10.9 1.8 R-VALUE DROPPED EXPOSED
<br /> 22-25.9 .9 11-12.9 1.6 10-13.9 1.2 1.3
<br />INSULATED 5.1 4.0 26-29.9 .7 13-18.9 1.5 14-20.9 .7 .7
<br /> 30-37.9 .6 19-25.9 1.1 21 & Uo .4 .3
<br /> 38 & Uo .4 26-29,9 ,6
<br /> ::lOR.lln 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPMI
<br />SLAB-ON.GRADE RAISED RAISED WOOD'
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R-V ALUE WPM R-VALUE WPM R-VALUE WPM WPM WPM
<br />0-2.9 2,5 0-2.9 4.0 0-6.9 7.9 N/A 5.3
<br />3-4.9 -1.7 3-4.9 1.8 7-10.9 2.1 ,7 2.1
<br />5.6.9 -2.4 5-6.9 1.1 11-18.9 1,5 ,5 1.8
<br />7 R.lln _?7 7 R.lln R 1QR.llnQ ::l 1.0
<br />
<br />WPM)
<br />
<br />
<br />6A-16 DUCT MULTIPLIERS OM
<br />
<br />6.2
<br />4.1
<br />
<br />SUPPLY DUCTS IN
<br />UNCONomONEO SPACE
<br />
<br />
<br />RETURN DUCTS
<br />IN UNCONDmONED SPACE
<br />1.14
<br />1.10
<br />1.09
<br />1.10
<br />1.07
<br />
<br />RETURN DUCTS
<br />IN CONDmONED SPACE
<br />1.10
<br />1.07
<br />1.06
<br />1.00
<br />1.00
<br />
<br />SUPPLY DUCTSIN
<br />ONDmONED SPACE'
<br />
<br />6A-17 HEATING SYSTEM MULTIPLIERS IHSMI
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS (HSM)
<br />Central Heat f-------HSP~__ n_ 6.4Q~.79_. IL8()-6~!_ .. 6.90-7.39 7,40-7.~~ 7.~0-8.39 8.40-8,89 _~.9-9.39 _ 9.4~9.8~ .
<br /> -
<br />Pump Units HSM .53 .50 .49 .46 .43 .41 .38 .36
<br /> HSPF 9.90-10.39 10.40-10.89 10.90-11.39 11,40-11.89 11.90-12.39 12.40 & uo
<br /> HSM .34 .33 .31 ,30 .29 .28
<br />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
<br /> HSM .38 .37 .34 .32 .30 .29 .27 .26
<br />_l;lectric Strip . ~._--- -- -----..----..---- .. - - ------------ J.O ------- -~--~--~,- -------_._..._-----~---
<br />Ga~& Otl1!lr Fuels 1,0 (See Table 6A-l 8 for Credit Multiplier) MINIMUMS: CENTRAL UNITS-AIR SOURCE SPLIT SVSTEM 6,8 HSPF, SINGLE PKG, 6,6 HSPF, WATER SOURCE 3,8 COP, GROUND WATER SOURCE 3,4 COP, PTHP 2,5-2,7 COP,
<br />
<br />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
<br />SECTION 3,1 OF APPENDIX C, 3 DUCTS IN CONDITIONED SPACE NEED TO BE INSULATED ONLY TO THE R-VALUE NECESSARY TO PREVENT CONDENSATION.
<br />
<br />-5-
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