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<br />WINTER POINT MULTIPLIERS (WPM)
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<br />CLIMATE ZONES +,,' 56
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<br />6A.10 WINTER OVERHANG FACTORS (WOFl .
<br />J OH RATIO I .00-,11 I ,12-,17 .18-.26 I ,27-,35 I .36-.46 I .47-,57 ,58-.70 ,71-.83 ,84-1.18 11.19-1,7211.7:3-2,731 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 />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 />EIW 1.00 ,71 ,57 .19 -.20 -,65 -1.05 -1,48 -2.03 -3.01 -4,06 -5,04
<br />SE/SW 1.00 ,93 ,90 .80 ,68 .54 .39 ,22 .05 -,33 -.71 -1.01
<br />l- S 1.00 ,95 ,92 ,83 .70 .54 .36 ,13 -.13 -,70 -,98 -1,09
<br />ua:
<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 />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
<br />EIW 1.00 ,88 ,82 ,66 .50 ,31 ,15 -,03 -,26 -.66 -1,10 -1,50
<br />SE/SW 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% ft. 2ft, 3ft, 3% ft, 4%ft, 5% ft, 6% ft, 9V,ft, 14ft, 20ft,+
<br /> 'TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT, BELOW THE OVERHANG,
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<br />6A-11 WALL WINTER POINT MULTIPLIERS WPM
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<br />FRAME
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<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
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<br />R.V ALUE
<br />0-6,9
<br />7-10,9
<br />11-12.9
<br />13-18,9
<br />19-25,9
<br />26& U
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<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
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<br />CONCRETE BLOCK'
<br />INT. INSULATION EXT,INSUL
<br />NORMAL WT. NOR. WT,
<br />EXT ADJ EXT
<br />6,0 3,1 6.0
<br />3,8 2,3 2,8
<br />2,9 1,9 2,0
<br />2,3 1,5 1,5
<br />1,5 1.1 ,8
<br />,8 ,7
<br />,5 ,5
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<br />6A-12 DOOR WINTER POINT MULTIPLIERS 6A-13 CEILING WINTER POINT MULTIPLIERS (WPMl
<br />DOOR TYPE EXTERIOR ADJACENT UNDER ATTIC 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 & Un ,4 ,3
<br /> 38 & Uo .4 26-29,9 ,6
<br /> ::!n Ro Iln 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS IWPM\
<br />SLAB-QN-GRADE T RAISED RAISED WOOQ2
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R-VALUE WPM :"ii R-VALUE WPM ... R-VALUE WPM WPM WPM
<br />0-2,9 2.5 tt 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 ii 7-10.9 2.1 ,7 2.1
<br />5-6,9 -2,4 !i 5-6.9 1,1 HH 11-18.9 1.5 .5 1.8
<br />7 Rolin --;)7 Iii 7 Rolln R ... 19 Ro Iln9 1 1 n
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<br />WPM)
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<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) 6A-16 DUCT MULTIPLIERS OM
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<br />SUPPLY DUCTS IN
<br />CONDITIONED 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
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<br />INFILTRATION PRACTICE WPM
<br />(SEE TABLE 9P\
<br />PRACTICE #1 6.2
<br />PRACTICE #2 4,1
<br />II::! ??
<br />
<br />SUPPLY DUCTS IN
<br />UNCONDITIONED SPACE
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<br />6A-17 HEATING SYSTEM MULTIPLIERS IHSM\
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS IHSMl
<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 & un
<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 ISee Table 6A-18 for Credit Multinlierl
<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,
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<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,
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<br />-5-
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