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<br />WINTER POINT MULTIPLIERS (WPM)
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<br />"
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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 I ,00-,11 ,12-,17 ,18-,26 I .27-,35 I ,36-,46 ,47-,57 ,58-,70 ,71-,83 I ,84-1,18 11.19-1.72 1.73-2.73 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 />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 />ENol 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 />ta: S 1.00 ,95 ,92 ,83 ,70 ,54 ,36 ,13 -,13 -.70 -,98 -1.09
<br />wo 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 />ENol 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, 5Y2ft, 6'A ft, 9%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
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<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
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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 />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 (WPMl
<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 & Up .4 ,3
<br /> 38 & Un .4 26-29,9 ,6
<br /> ~nR.IJn 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPM\
<br />SLAB.ON-GRADE III;I!: RAISED Ii;; RAISED WOO[)2
<br /> , POST OR PIER STEM WALL wI UNDER
<br />EDGE INSULATION CONCRETE ADJACENT
<br /> iii. CONSTRUCTION FLOOR INSULATION
<br />R-VALUE WPM iii R-VALUE WPM iiE.. R-VALUE WPM WPM WPM
<br />0-2,9 2,5 iiii 0-2,9 4,0 ... 0-6,9 7,9 1.8 5,3
<br />3-4,9 -1.7 iii 3-4,9 1.8 , 7-10,9 2,1 ,7 2,1
<br />5-6,9 -2.4 ;iiiii 5-6,9 1,1 ;i;i; 11-18,9 1,5 ,5 1,8
<br />7 II. lJn _? 7 7 R.lln R i'. HIR.lln Q ~ 1.0
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<br />WPM)
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<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) 6A-16 DUCT MULTIPLIERS DM
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<br />INFILTRATION PRACTICE WPM
<br />(SEE TABLE 6A-21\
<br />PRACTICE #1 6,2
<br />PRACTICE #2 4,1
<br /> ??
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<br />SUPPLY DUCTS IN
<br />UNCONDITIONED SPACE
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<br />RETURN DUCTS
<br />IN UNCONDITIONED SPACE
<br />1.14
<br />1,10
<br />1,09
<br />1.10
<br />1,07
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<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 />SUPPLY DUCTS IN
<br />CONDITIONED SPACE'
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<br />6A.17 HEATING SYSTEM MULTIPLIERS (HSM\
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS (HSMl
<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,
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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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