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-WINTER POINT MULTIPLIERS (WPM) CLIMATE ZONES 4 5 6 6A.l0 WINTER OVERHANG FACTORS lWOF) J OH RA no I .00-.11 .12-.17 .18-.26 I .27-.35 I .36-.46 I .47-.57 .58-.70 .71-.83 .84-1.18 r1.19-1.72 1.73-2.73 2.74+ SINGLE PANE GLASS .- 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 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 E/W 1.00 .71 .57 r'19J -.20 -.65 -1.05 -1.48 -2.03 -3.01 -4.06 -5.04 SElSW 1.00 .93 .90 ---:lio .68 .54 .39 .22 .05 -.33 -.71 -1.01 I-a: S (1.00 ) .95 .92 .83 .70 .54 .36 .13 -.13 -.70 -.98 -1.09 ~[ '. . DOUBLE PANE GLASS 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 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 E/W 1.00 .88 .82 .66 .50 .31 .15 -.03 -.26 -.66 .1.10 -1.50 SElSW 1.00 .95 .92 .85 .76 .65 .54 .41 .28 -.01 -.30 -.52 S 1.00 .96 .94 .87 .78 .65 .51 .33 .13 -.30 -.51 -.60 OH LENGTH. Oft. 1 ft. 1'h ft. 2ft. 3ft. 3'hft. 4'hft. 5'h ft. 6'h ft. 9% ft. 14 ft. 20ft.+ 'TO SELECT BY OVERHANG LENGTH, NO PART OF GLASS SHALL BE MORE THAN 8 FT. BELOW THE OVERHANG. 6A-11 WALL WINTER POINT MULTIPLIERS PM FRAME WOOD EXT ADJ 6.8 5.3 2.5 2.1 2.0 1.8 1.1 .7 CONCRETE BLOCK' INT. INSULATION NORMAL WT. EXT ADJ 6.0 3.1 3.8 2.3 1.9 1.5 1.1 .7 .5 6A.12 DOOR WINTER POINT MULTIPLIERS DOOR TYPE EXTERIOR ADJACENT WOOD 7.6 5.9 INSULATED @ (4.0) WPM) 6A-13 CEILING WINTER POINT MULTIPLIERS /wPMI UNDER ATTIC SINGLE ASSEMBLY CONCRETE DECK ROOF R-VALUE WPM R-VALUE WPM CEILING TYPE 19-21.9 / 1.0.,)- 10-10.9 1.8 R-VALUE DROPPED EXPOSED 22-25.9 .9 11-12.9 1.6 10-13.9 1.2 1.3 26-29.9 . .7 13-18.9 1.5 14-20.9 .7 .7 30-37.9 .6 19-25.9 1.1 21 & Un .4 .3 38 & Uo .4 26-29.9 .6 .~ A RAISED W0002 POST OR PIER STEM WALL wI UNDER CONSTRUCTION FLOOR INSULATION WPM WPM 7.9 1.8 ~1 .7 1.5 .5 ADJACENT WPM 5.3 2.1 1.8 6A-16 DUCT MULTIPLIERS /OMI RETURN DUCTS RETURN DUCTS R-VALUE IN UNCONDITIONED SPACE IN CONDITIONED SPACE SUPPLY DUCTS IN 4.2-5.9 1.14 1.10 6.0-6.6 (1.10 ) 1.07 UNCONDITIONED SPACE 6.7 & Uo 1.09 1.06 SUPPLY DUCTS IN 4.2.5.9 1.10 1.00 CONDITIONED SPACE3 6.0-6.6 1.07 1.00 f; 7 R.lln 1M 1M 6A-17 HEATING SYSTEM MULTIPLIERS /HSM\ SYSTEM TYPE HEATING SYSTEM MULTIPLIERS IHSM\ 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 Pump Units HSM .53 .50 "- .49./ .46 .43 .41 .38 .36 HSPF 9.90-10.39 10.40-10.89 10.90-11.39 11.40-11.89 11.90-12.39 12.40 & uo HSM .34 .33 .31 .30 .29 .28 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 HSM .40 .37 .34 .32 .30 .29 .27 .26 Electric Strio 1.0 Gas & LP Gas 1.0 (See Table 6A-18 for Credit Multiolierl 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. 6A-15 INFILTRATION WINTER POINT MULTIPLIERS (WPM) INFILTRATION PRACTICE WPM SEE TABLE 6A-21 PRACTICE #1 PRACTICE #2 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 SECTION 3.1 OF APPENDIX C. 3 DUCTS IN CONDITIONED SPACE NEED TO BE INSULATED ONLY TO THE R-VALUE NECESSARY TO PREVENT CONDENSATION. .5.