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<br />WINTER POINT MULTIPLIERS (WPM)
<br />
<br />CLIMATE ZONES 4 .5 6
<br />
<br />6A.10 WINTER OVERHANG FACTORS IWOF! ,
<br />J OH RATIO I .00-.11 T ,12-.17 .18-.26 I .27-.35 .36-.46 I .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 />NElNW 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 />SElSW 1.00 ,93 .90 .80 .68 .54 ,39 .22 .05 -.33 -.71 -1.01
<br />Ga: 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 />NElNW 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 />SElSW 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* 011, 111, 1%11, 211. 311, 3%11. 4%11. 5%11, 6%11, 9%11, 1411. 2011.+
<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 />
<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 BLOCK'
<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
<br />
<br />
<br />6A.12 DOOR WINTER POINT MULTIPLIERS 6A.13 CEILING WINTER POINT MULTIPLIERS lWPMl
<br />DOOR TYPE EXTERIOR ADJACENT UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOFING
<br /> R.VALUE WPM R-V ALUE 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 &Uo .4 ,3
<br /> 38 & Uo .4 26-29,9 ,6
<br /> 11) R. Iln 4
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS IWPMl
<br />SLAB-QN.GRADE '.f; RAISED HO RAISED WOOD2
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT
<br />iii.... CONSTRUCTION FLOOR INSULATION
<br />R-VALUE WPM if.. R-VALUE WPM R-VALUE WPM WPM WPM
<br />0-2.9 2.5 0-2,9 4.0 f/ 0-6.9 7.9 N/A 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 i 5-6,9 1,1 1/ 11-18.9 1.5 .5 1.8
<br />7 !l.lln -')7 i 7 !I. lJn R Iii.: ~lnQ ,- 1(1'
<br />
<br />WPMI
<br />
<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPMI 6A-16 DUCT MULTIPLIERS DM
<br />
<br />SUPPLY DUCTS IN
<br />ONDITIONED 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 />INFILTRATION PRACTICE WPM
<br />lSEE TABLE 9Pl
<br />PRACTICE #1 6.2
<br />PRACTICE #2 4.1
<br />/11 ??
<br />
<br />SUPPLY DUCTS IN
<br />UNCONDITIONED SPACE
<br />
<br />6A-17 HEATING SYSTEM MULTIPLIERS IHSMl
<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 ,38 .37 .34 ,32 .30 ,29 .27 .26
<br />Electric Strin 1,0
<br />Gas & Other Fuels 1,0 (See Table 6A-18lor 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-V ALUE NECESSARY TO PREVENT CONDENSATION.
<br />
<br />.5-
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