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<br />WINTER POINT MULTIPLIERS (WPM) CLIMATE ZONES 4 5 6
<br />6A-10 WINTER OVERHANG FACTORS /WO ~ /"-
<br />J OH RATIO .00-,11 .12-.17 \ .18-.26 ,27-.35 .36-.46 .47-.57 ,58-,70 I .71-,83 I .84-1,18 11.19-1.72 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 />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 />EJW 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 />t;a: S 1,00 .95 .92 ,83 .70 ,54 ,36 ,13 -,13 -.70 -.98 -1.09
<br />wo / DOUBLE PANE GLASS
<br />...J
<br />w N 1.00 ...",-g 1.07 1,11 1.14 1.18 1.21 1,24 1,28 1.34 1.40 1.47
<br />U)
<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 /> SElSW 1.00 .95 .92 .85 .76 .65 .54 .41 .28 -.01 -.30 '.52
<br />L S 1.00 .96 .94 .87 ,78 ,65 ,51 .33 .13 -.30 -.51 -.60
<br />OH LENGTH' Oft. 1 ft. 1'/, ft. 2ft. 3 ft. 3'12 ft. 4'12ft, 5';' ft. 6'/,ft. 9'12 ft. 14ft. 20 ft.+
<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 /wPMl
<br /> FRAME CONCRETE BLOCK! FACE BRICK LOG
<br /> INT, INSULATION XT.INSUL R-VALUE WOOD FR
<br /> WOOD STEEL NORMAL WT. NOR. WT. 0-6.9 7.0 6 INCH
<br />R-VALUE EXT ADJ EXT ADJ R-VALUE EXT ADJ EXT 7-10,9 2.1 R-VALUE EXT
<br />0-6.9 6.8 5.3 9.4 6.7 0-2,9 6.0 3.1 6.0 11-18.9 1.7 0-2,9 2.2
<br />7-10.9 2,5 2.1 4.4 3.3 3-4.9 3.8 2.3 2.8 19-25.9 1.0 3-6.9 1.2
<br />11-12.9 2.0 1.8 3,3 2,6 5-6,9 2.9 1,9 2.0 26 & Un .6 7 & Uo .9
<br />13-18.9 1.8 1.6 3.0 2.4 7-10.9 2,3 1.5 1.5 R-VALUE BLOCK 8 INCH
<br />19-25.9 1.1 1,0 2.6 2,2 11-111,9 1,5 1.1 .8 0-2,9 3,7 R-VALUE EXT
<br />26& Uo .7 .7 1.4 1.2 19-25.9 .8 .7 3-6.9 2.6 ~L_ __.lg_
<br /> 26 & Un .5 .5 7-9.9 1.8 3-6,9 ,9
<br /> 10R.tln 11 7 R. Iln 7
<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
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<br />WPM)
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<br />6A.13 CEILING WINTER POINT MULTIPLIERS /wPMl
<br />UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF
<br />R.VALUE WPM R-VALUE 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 & Un .4 .3
<br />38 & Un .4 26-29,9 ,6
<br /> 30 & Un /I
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<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPMl
<br />SLAB-ON-GRADE RAISED RAISED WOOO>
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R-VALUE WPM R-VALUE WPM R-VALUE WPM WPM WPM
<br />0,2.9 2.5 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 5,6,9 1.1 11-18.9 1.5 .5 1.8
<br />7 & lIn _')7 -iR. ~ R lQ R. IIn .9 1 10
<br />
<br />6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM)
<br />
<br /> 6A.16 DUCT MULTIPLIERS COM! /.
<br />INFILTRATION PRACTICE WPM RETURN DUCTS RETURN DUCTS
<br /> (SEE TABLE 6A-21\ 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 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 /> "7 R.lln 1M 100
<br />6A.17 HEATING SYSTEM MULTIPLIERS IHSMl
<br />t-SYSTEM TYPE HEATING mT~M.!lIJ.lJ..!I,elJERSJ!iSMl
<br />Central Heat HSPF 6.40-6.79 6.80-6.89 6.90-7.39 hW-7.89 7,90-8,39 8.40-8.89 8.9-9,39 9.4-9.8L_
<br />Pump Units HSM .53 ,50 .49 { / .46h-, .43 ,41 .38 '-~
<br /> HSPF 9.90-10.39 10,40-10.89 10.90-11.39 ...... '^" n,y 11,90-12.39 12.40 & un
<br /> HSM .34 ,33 ,31 .30 .29 ,28
<br />PTHP COP 2.50.2.~L ~.70-~~ i--2)lO-3.09 3.10-3.29 3,30-3.49 3,50-3.69 3.70-3.89 3,90-4.1.L
<br /> HSM .40 ,37 .34 .3,2 .30 ,29 ,27 .29_
<br />, Electrjy_~ - .-._-. 1.0 - - -----
<br />Gas & lP Gas 1,0 (See Table 6A-18 for Credit MulliDlier)
<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 />, 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.' 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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