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<br />WINTER POINT MULTIPLIERS (WPM)
<br />
<br />CLIMATE ZONES 4 5 6
<br />
<br />6A-l0 WINTER OVERHANG FACTORS (WOF\
<br />J OH RATIO .00-,11 .12-,17 I ,18-,26 I ,27-,35 I ,36-,46 .47-,57 I .58-,70 I .71-,83 ,84-1,18 1.19-1.72 I 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 />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 />1-11: 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 />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, l'!2ft, 2ft, 3ft. 3'12 ft. 4'12ft, 5'!2ft. 6'!2ft, 9'12 ft. 14ft. 20ft.+
<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 />
<br />FRAME
<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 />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
<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 BLOCK1
<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
<br />
<br />
<br />LOG
<br />
<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-V ALUE WPM R.VALUE WPM CEILING TYPE
<br />WOOD 7.6 5.9 19-21.9 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 13-18.9 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 /> <lnR.lln 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPM)
<br />SLAB.ON-GRADE 'ni RAISED Hn RAISED WOOD2
<br /> POST OR PIER STEM WALL wI UNDER
<br />EDGE INSULATION CONCRETE CONSTRUCTION FLOOR INSULATION ADJACENT
<br />R.V ALUE WPM '..i: R-VALUE WPM R-V ALUE WPM WPM WPM
<br />0-2,9 2.5 n 0-2,9 4,0 0-6,9 7.9 1,8 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 nn' 5-6,9 1,1 11-18,9 1.5 ,5 1,8
<br />7 II. Iln _? 7 7 II. Iln R Hl II. Iln Q :-l 10
<br />
<br />WPM)
<br />
<br /> 6A-16 DUCT MULTIPLIERS IOM\
<br /> RETURN DUCTS RETURN DUCTS
<br /> R-V ALUE 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 & Un 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 /> R 7 II.lln 10R 100
<br />6A-17 HEATING SYSTEM MULTIPLIERS IHSM\
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS IHSM\
<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 ,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 Multinlier\
<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 />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM)
<br />INFILTRATION PRACTICE WPM
<br />SEE TABLE 6A-21
<br />PRACTICE #1 6.2
<br />PRACTICE #2 4,1
<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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