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<br />WINTEfI POINT MULTIPLIERS (WPM)
<br />
<br />CLIMATE ZONES 4 5 6
<br />
<br />6A-10 WINTER OVERHANG FACTORS (WOF)
<br />J OH RATIO ,00-,11 I .12-,17 I ,18-,26 ,27-.35 ,36-.46 I .47-,57 .58-,70 ,71-.83 ,84-1.18 Tl.19-1,72 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 />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 />E/W 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 />tic: 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 />E/W 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" Oft, 1 ft, 1'!2ft. 2ft. 3ft, 3'!2ft, 4Y,ft, 5'!2ft, 6'!2ft, 9'!2ft. 14ft. 20ft,+
<br /> "TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT. BELOW THE OVERHANG.
<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 />EXT
<br />9.4
<br />4.4
<br />3.3
<br />3.0
<br />2.6
<br />"1.4
<br />
<br />ADJ
<br />6.7
<br />3.3
<br />2.6
<br />2.4
<br />2.2
<br />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-11 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 />STEEL
<br />
<br />6A-12 DOOR WINTER POINT MULTIPLIERS 6A-13 CEILING WINTER POINT MULTIPLIERS IWPM)
<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 & UP .4 26-29,9 ,6
<br /> ::\0 & lIn <1
<br />6A.14 FLOOR WINTER POINT MULTIPLIERS IWPM)
<br /> SiT;i i: . RAISED WOO02
<br />SLAB-oN-GRADE :j::jl; RAISED ,Hi POST OR PIER STEM WALL wI UNDER
<br />EDGE INSULATION CONCRETE ii CONSTRUCTION FLOOR INSULATION ADJACENT
<br />R-V ALUE WPM ; R-VALUE WPM R-VALUE WPM WPM WPM
<br />0-2.9 2.5 ;':i!I::: 0-2,9 4.0 ;w 0-6.9 7,9 1,8 5.3
<br />3-4,9 -1.7 3-4.9 1,8 ii 7-10,9 2,1 .7 2,1
<br />5-6,9 -2.4 '.ii 5-6,9 1.1 ii 11-18,9 1,5 .5 1,8
<br />7 & Iln -?7 ;i 7 & lln R i'" 10 R. Iln Q ::! 10
<br />
<br />WPM)
<br />
<br /> 6A-16 DUCT MULTIPLIERS IDM\
<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 /> 6.0-6,6 1,10 1,07
<br /> UNCONDITIONED SPACE 6.7 & UP 1,09 1,06
<br /> SUPPLY DUCTSIN 4,2-5,9 1.10 1.00
<br /> CONDITIONED SPACE' 6,0-6.6 1.07 1.00
<br /> "Bnun 106 100
<br />6A-17 HEATING SYSTEM MULTIPLIERS IHSM)
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLlERS-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 & 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 />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-
<br />
<br />'N^.___~~'__'._____W_-"_.
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