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<br />. WINTER POINT MULTIPLIERS (WPM)
<br />
<br />CLIMATE ZONES 4 5 6
<br />
<br />6A-10 WINTER OVERHANG FACTORS (WOF)
<br />J OH RATIO ,00-,11 I ,12-.17 I ,18-,26 I ,27-,35 / ,36-,46 I .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 1.34
<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 />ENV 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 />.... S 1.00 .95 .92 .83 ,70 ,54 ,36 ,13 -.13 -.70 -.98 -1.09
<br />(.)a: 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 />ENV 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 .B7 ,7B ,65 .51 ,33 ,13 -.30 -,51 -,60
<br />OH LENGTH' Oft, 1 ft. 1'h ft. 2 ft, 3ft. 3'hft. 4Y2ft. 5'h ft. 6'h ft, 9Y2ft. 14ft, 20ft,+
<br /> 'TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT. BELOW THE OVERHANG.
<br />
<br />6A-l1 WALL WINTER POINT MULTIPLIERS WPM
<br />FRAME
<br />
<br />"
<br />
<br />R-V ALUE
<br />0-6,9
<br />7-10.9
<br />11-12.9
<br />13-1B,9
<br />19-25.9
<br />26& U
<br />
<br />WOOD
<br />EXT ADJ
<br />6.B 5.3
<br />2.5 2.1
<br />2,0 l,B
<br />1.B 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.B 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 6A-13 CEILING WINTER POINT MULTIPLIERS (WPMI
<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-V ALUE 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 13-1B,9 1.5 14-20,9 .7 .7
<br /> 30-37,9 .6 19-25,9 1.1 21 & Uo .4 .3
<br /> 3B & Uo .4 26-29.9 .6
<br /> 10 ~ Iln 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPMl
<br />SLAB-QN-GRADE RAISED RAISED WOO[)2
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wI UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R-VALUE WPM R-VALUE WPM R-VALUE WPM WPM WPM
<br />0-2.9 2,5 hi 0-2.9 4.0 0-6,9 7,9 N/A 5,3
<br />3-4.9 -1.7 3-4,9 l.B 7-10,9 2.1 .7 2.1
<br />5-6.9 -2.4 5-6,9 1.1 11-1B,9 1.5 ,5 1.B
<br />7 ~ tIn -'7 7 ~ tIn II 1q ~ Iln q 1 10
<br />
<br />WPM)
<br />
<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) 6A-16 DUCT MULTIPLIERS OM
<br />
<br />INFILTRATION PRACTICE WPM
<br />(SEE TABLE 9PI
<br />PRACTICE #1 6.2
<br />PRACTICE #2 4.1
<br /> "
<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 />ONDITIONED SPACE'
<br />
<br />6A-17 HEATING SYSTEM MULTIPLIERS (HSMI
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS lHSMl
<br />Central Heat HSPF 6,40-6,79 6,BO-6,B9 6,90-7,39 7.40-7.B9 7,90-B.39 B.40-B,B9 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 Multiolierl
<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.
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<br />-5-
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