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<br />WINTER POINT MULTIPLIERS (WPM)
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<br />CLIMATE ZONES 4 5 6
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<br />6A.10 WINTER OVERHANG FACTORS (WOF)
<br />J OH RATIO T ,00-,11 T ,12-,17 ,18-,26 T ,27-,35 T ,36-,46 .47-,57 ,58- .70 .71-,83 I .84-1,18 1.19-1,72 1.73-2.731 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 />Em 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 />Oa: S 1.00 .95 ,92 ,83 .70 ,54 ,36 ,13 -,13 -,70 -,98 -1,09
<br />~l 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 />Em 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%ft, 2ft, 3ft, 3%ft, 4'12 ft. 5Y2ft, 6'12 ft, 9%ft, 14ft, 20ft,+
<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 WPM
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<br />FRAME
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<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
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<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
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<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
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<br />CONCRETE BLOCKl
<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
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<br />6A-12 DOOR WINTER POINT MULTIPLIERS rwl 6A-13 CEILING WINTER POINT MULTIPLIERS (WPMl
<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 & UP ,4 ,3
<br /> 38 & UP .4 26-29,9 ,6
<br /> :m & lill T
<br />6A-14 FLOOR WINTER POINT MULTIPLIERS (WPMl
<br />SLAB.ON-GRADE X,':jc:Xi; RAISED "" RAISED WOOD2
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wi UNDER ADJACENT
<br />'c" xx CONSTRUCTION FLOOR INSULATION
<br />R.V ALUE WPM iUU 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 Xc'; 5-6,9 1,1 :L 11-18,9 1,5 ,5 1,8
<br />-711.110 _?-7 ;;'.J 711.110 R ;:: 1Q 11.110 ,9 ~ 1'0
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<br />PM)
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<br /> 6A.16 DUCT MULTIPLIERS (DMl
<br /> RETURN DUCTS RETURN DUCTS
<br /> R-VALUE 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 /> 6:7&Ufl 1:06 100
<br />6A-17 HEATING SYSTEM MULTIPLIERS (HSMl
<br />SYSTEM TYPE HEATING SYSTEM MULTIPLIERS lHSMl
<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 & UD
<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,
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<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
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<br />1 FOR MULTIPLIERS FOR OTHER TYPES OF CONCRETE BLOCK CONSTRUCTION SEE SECTION 2,1 01' 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,
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