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<br />WINTER POINT MULTIPLIERS (WPM)
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<br />CLIMATE ZONES 4 5 6
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<br />6A-10 WINTER OVERHANG FACTORS (WOF)
<br />J OH RATIO ,00-,11 ,12-,17 ,18-,26 1 ,27-,35 ,36-,46 I ,47-,57 ,58-,70 I ,71-,83 I ,84-1.18 11.19-1.72 11.73-2.73 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 />E/W 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 />I-a: S 1.00 ,95 ,92 ,83 .70 ,54 ,36 ,13 -,13 -.70 -.98 -1.09
<br />frlo DOUBLE PANE GLASS
<br />~l 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 />E/W 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, 1Y2ft, 2ft, 3ft, 3Y2ft, 4Y2ft, 5'12 ft, 61;2 ft, 9'12 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
<br />FRAME
<br />
<br />R-VALUE
<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
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<br />CONCRETE BLOCK1
<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
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<br />6A-12 DOOR WINTER POINT MULTIPLIERS 6A.13 CEILING WINTER POINT MULTIPLIERS (WPM)
<br />DOOR TYPE EXTERIOR ADJACENT UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF
<br /> R-VALUE WPM R-VALUE WPM CEILING TYPE
<br />WOOD 7,6 5,9 19-21.9 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 /> 10 R. Un 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPM)
<br />SLAB-ON-GRADE RAISED Ii RAISED WOO[)2
<br />EDGE INSULATION III CONCRETE iII POST OR PIER STEM WALL wI UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R.VALUE WPM !ijiI R.VALUE WPM II R-VALUE WPM WPM WPM
<br />0-2,9 2,5 0-2,9 4,0 } 0-6,9 7,9 1,8 5,3
<br />3-4,9 -1.7 !!rI: 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 LL 11-18,9 1,5 ,5 1,8
<br />7 R. Un -')7 IIEI 7 R. Un .R 19 R. Un ,9 .3 1.0
<br />
<br />WPM)
<br />
<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM)
<br />
<br />INFILTRATION PRACTICE WPM
<br />(SEE TABLE 6A.21l
<br />PRACTICE #1 6,2
<br />PRACTICE #2 4,1
<br />: #1 22
<br />
<br />6A-16 DUCT MULTIPLIERS (DM)
<br /> RETURN DUCTS RETURN DUCTS
<br /> R-VALUE IN UNCONDITIONED SPACE IN CONDITIONED SPACE
<br />SUPPLY DUCTS IN 4,2-5,9 1.14 1,10
<br />UNCONDITIONED SPACE 6,0-6,6 1,10 1,07
<br />6.7 & Uo 1,09 1,06
<br />SUPPLY DUCTS IN 4,2-5,9 1,10 1.00
<br />CONDITIONED SPACE' 6,0-6,6 1.07 1.00
<br />6.7 & Un 1.06 1.00
<br />
<br />6A.17 HEATING SYSTEM MULTIPLIERS (HSMI
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS (HSM)
<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 .40 ,37 ,34 ,32 ,30 ,29 ,27 ,26
<br />Electric Strio 1,0
<br />Gas & LP Gas 1,0 (See Table 6A-18 for Credit Multiolier)
<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 SEE TABLES 6-6 TO 6-8,
<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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