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<br />WINTER POINT MULTIPLIERS (WPM)
<br />~
<br />
<br />CLIMATE ZONES '4 '5 6 .'
<br />
<br />6A.l0 WINTER OYERHANG FACTORS (WOFI
<br /> ~ OH RATIO .00-,11 ,12-,17 .18-.26 .27-.35 I .36-.46 ,47-,57 I .58-.70 I .71-,83 I .84-1.18 1.19-1.72 1.73-2.73 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.~4
<br /> 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
<br /> Em 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 />lEI
<br />I-a: 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 />Em 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' 011. 111. 1%11. 211. 311, 3V211, 4%11, 5%11, 6%11, 9%11. 1411. 2011.+
<br /> 'TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT, BELOW THE OVERHANG.
<br />
<br />6A.ll WALL WINTER POINT MULTIPLIERS WPM
<br />FRAME
<br />
<br />R-YALUE
<br />0-6.9
<br />7-10,9
<br />11-12.9
<br />13-18.9
<br />19-25.9
<br />26& U
<br />
<br />WOOD
<br />EXT ADJ
<br />6.8 5.3
<br />2.5 2,1
<br />2.0 1.8
<br />1.8 1.6
<br />1.1 1.0
<br />.7 .7
<br />
<br />STEEL
<br />EXT ADJ
<br />9.4 6.7
<br />4.4 3,3
<br />3.3 2.6
<br />3.0 2.4
<br />2,6 2.2
<br />1.4 1.2
<br />
<br />
<br />CONCRETE BLOCK'
<br />INT. INSULATION
<br />NORMAL WT.
<br />EXT ADJ
<br />6.0 3.1
<br />3.8 2.3
<br />2.9 1.9
<br />2.3 1.5
<br />1.5 1.1
<br />.8 ,7
<br />.5 .5
<br />
<br />
<br />6A.12 DOOR WINTER POINT MULTIPLIERS
<br />DOOR TYPE EXTERIOR ADJACENT
<br />WOOD 7.6 5,9
<br />INSULATED 5.1 4.0
<br />
<br />WPMI
<br />
<br />6A.13 CEILING WINTER POINT MULTIPLIERS (WPM I
<br />UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOFING
<br />R-YALUE WPM R-Y ALUE WPM CEILING TYPE
<br />19-219 1,0 10-10.9 1.8 R-YALUE DROPPED EXPOSED
<br />22-25.9 .9 11-12.9 1.6 10-13.9 1,2 1.3
<br />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 & UP .4 .3
<br />38 & UP .4 26-29.9 .6
<br /> 30 & Uo .4
<br />
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPMI
<br />SLAB-QN-GRADE III: RAISED RAISED WOOD2
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wI UNDER ADJACENT
<br />i} CONSTRUCTION FLOOR INSULATION
<br />R.YALUE WPM '}} R-YALUE WPM R-Y ALUE 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 :i 5-6.9 1.1 11-18,9 1,5 .5 1.8
<br />7 & Uo -?7 7 Po. Iln R HlPo.IJnq ::! 10
<br />
<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPMI 6A-16 DUCT MULTIPLIERS DM
<br />
<br />INFILTRATION PRACTICE WPM
<br />(SEE TABLE 9Pl
<br />PRACTICE #1 6.2
<br />PRACTICE #2 4.1
<br /> 2,2
<br />
<br />SUPPLY DUCTS IN
<br />UNCONDITIONED SPACE
<br />
<br />
<br />RETURN DUCTS
<br />IN UNCONDITIONED SPACE
<br />1.14
<br />1.10
<br />1.09
<br />1.10
<br />1.07
<br />
<br />RETURN DUCTS
<br />IN CONDITIONED SPACE
<br />1.10
<br />1.07
<br />1.06
<br />1.00
<br />1.00
<br />
<br />SUPPLY DUCTS IN
<br />CONDITIONED SPACE'
<br />
<br />6A-17 HEATING SYSTEM MULTIPLIERS (HSMI
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS 'HSMI
<br />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
<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 />Electric Strio 1.0
<br />Gas & Other Fuels 1.0 (See Table 6A-18 for Credit Multiplier)
<br />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 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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