|
<br />. .
<br />WINTER POINT MULTIPLIERS (WPM)
<br />
<br />CLIMATE ZONES 4 S 6
<br />
<br />6A.l0 WINTER OVERHANG FACTORS (WOF)
<br />J OH RATIO I ,00-.11 I .12-,17 T ,18-,26 ,27-,35 1 ,36-,46 I ,47-.57 ,58-,70 1 .71-,83 I ,84-1,18 1.19-1,72 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 />Em 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 />t;a: 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 />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. 1'12 ft. 2ft. 3ft, 3'12ft, 4'12 ft. 5'12ft, 6'12 ft. 9'12ft, 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 />FRAME
<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 />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
<br />
<br />
<br />CONCRETE BLOCKl
<br />INT. INSULATION EXT.INSU
<br />NORMAL WT, NOR, WT.
<br />EXT ADJ EXT
<br />&0 al &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 />6A.12 DOOR WINTER POINT MULTIPLIERS
<br />DOOR TYPE EXTERIOR ADJACENT
<br />WOOD 7.6 5,9
<br />INSULATED 5.1 4.0
<br />
<br />WPM)
<br />
<br />6A-13 CEILING WINTER POINT MULTIPLIERS IWPM)
<br />UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF
<br />R-VALUE WPM R-V ALUE WPM CEILING TYPE
<br />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 />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 /> ::lO R.lln 4
<br />
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS IWPMl
<br />SLAB-DN-GRADE II' RAISED iii RAISED WOO[)2
<br />EDGE INSULATION ni CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R-V ALUE WPM ii R-V ALUE WPM R-V ALUE WPM WPM WPM
<br />0-2.9 2.5 ,fin 0-2,9 4,0 ii 0-6,9 7.9 1.8 5.3
<br />3-4,9 -1,7 ii 3-4,9 1,8 if 7-10.9 2,1 .7 2,1
<br />5-6,9 -2.4 5-6.9 1.1 i 11-18,9 1.5 ,5 1.8
<br />7R.lln -')7 7 II. lln R iii 1Q II. Iln Q ::l 10
<br />
<br />6A-1S INFILTRATION WINTER POINT MULTIPLIERS (WPM)
<br />
<br /> 6A.16 DUCT MULTIPLIERS IDMl
<br />INFILTRATION PRACTICE WPM RETURN DUCTS RETURN DUCTS
<br /> ISEE TABLE 6A-21l R,VALUE IN UNCONDITIONED SPACE IN CONDITIONED SPACE
<br />PRACTICE #1 6,2 SUPPLY DUCTS IN 4,2-5,9 1,14 1.10
<br />PRACTICE #2 4.1 6.0-6.6 1.10 1.07
<br /> 2.2 UNCONDITIONED SPACE 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 /> (;7R.lln 1M 100
<br />6A-17 HEATING SYSTEM MULTIPLIERS IHSMl
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS IHSMl
<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.OIsee 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 />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-
<br />
|