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WINTER POINT MULTIPLIERS (WPM) 6A-10 WlNT~R OVERH.6:NG FACTORS (WOF) CUMATE ZONES 4 5 6 i wa: mO Southwest 1.00 1.002 1.013 1.038 1.071 1.118 1.168 1.225 (1)1 L West 1.00 0.999 1.003 1.013 1.025 1.040 1.053 · 1.067 Northwest 1.00 0.999 0.998 0.997 0.997 0.996 0.995 0.994 OH Len h 0.0' 1.0' 1.5' 2.0' 3.0' 3.5' 4.5' 5.5' 6A.11 WALL WINTER POINT MUL TIPLlERSIWPM\ FRAME CONCRETEBLOCK(NORMAL~ FACE BRICK LOG INTERIOR EXT, R.VALUE WOOD FR R.VALUE BLOCK WOOD STEEL INSULATION INSUL 0-6.9 7.0 0-2.9 3,7 6/NCH SINCH R.VALUE EXT ADJ EXT ADJ R-VALUE EXT ADJ EXT 7-10.9 2.1 3-6.9 2.6 R.VALUE EXT EXT 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 7-9.9 1.8 0-2.9 2,2 1.2 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 10&UP 1.3 3.6.9 1.2 ,9 11-12.9 2.0 1.8 3.3 2.6 5-6.9 2.9 1.9 2.0 26 & Up .6 7 &Up .9 .7 13-18.9 1.8 1.6 3.0 2.4 7-10.9 2.3 1.5 1.5 19-25,9 1.1 1.0 2,6 2.2 11-18,9 1.5 1.1 .8 26& Up .7 .7 1.4 1.2 19-25.9 ,8 .7 I NOTE: SEE SECTION 2,0 OF APPENDIX C FOR MULTIPLIERS I 26&Up .5 .5 OF ENVELOPE COMPONENTS NOT ON THIS FORM, 6M2 DOOR WINTER POINT MULTIPLIERS (WPM) DOOR TYPE .EXTERIOR I_~ACE~T WOOD I 7.6 : 5.9 ------:t-- ' ----- INSULATED I 5.1 4.0 6A.13 CEILING WINTER POINT MULTIPLIERS (wpM UNDER A mc I SINGLE A5SEMBL Y I CONCRETE DECK ROOF R.VALUE I WPM-/ R-VALUE WPM! C'-ceiDNG TYP-r- 19-21.9 ,87 10-10.9 1.02 R.VALUE i EXPOSED ~ROPPED _..B-25.9----1\l._j_.J.1:~_____.JlL__1 10-13.9 C1.16 __ f 1lJ5- 26-29.9 .69 I 13-18.9 .84 14-20.9 t- ,83 I .76 lt~?e;-ro:Eo -+--iH~--t-- :~~ __I~.~-L-~~-_-i~- IRCC Credn 0,905 WMe Roof Credit 1.044 6A.14 FLOOR WINTER POINT MULTIPLIERS (WPM) SLAB..QN.GRADE EDGE INSULATION I R.VALUE _~__ WPM , _ 0-2.f!._-t--.l.?_~ 3-4.9 , -1.7 ! ---5-6.9 ----2T-_~ ~&u"T--2T I WPM 4.0 II I I , I II r- RAISED WOOD I POST OR PIER STEM WALL w/ UNDER ----,------ I CONSTRUCTION FLOOR INSULATION I ADJACENT I WPM WPM --r-- WPM L._~~_~_.-.l-~ _ ~.3-= 0.78 1.7 2.1 -+___ -0.47 - -i --- ---:5L_ fl\ 0.14 .3llf--- 6A.15 INFILTRATION & INTERNAL GAlNSIWPM\ 6A.17 DUCT MULTIPLIERS DMI See Table 6-10 for Code minimums. Air Infiltration 0.87 DUCT RETURN DUCTS In: Intemal Gains -1.15 SUPPLY DUCTS IN: R-Value Unconditioned Attic! Atticl Atticl Conditioned Infiltration/Internal Gains .0.28 soace RBS IRCC White roof soace (Combined) 4,2 1.107 1.098 1.100 1.102 1.092 Unconditioned Space 1.078 1.072 1.074 1.075 1.068 1.061 1.056 1.057 1.058 1,052 6A.16 AIR HANDLER MULTIPLIERS (WPM\ 1. 1.067 1.059 Located in oaraoe 1.00 AtticlRadiant Barrier (RBS) ,0 1. 1.051 - 1.045 Located in conditioned area 0.92 8.0 1.( T.041 - - .U~ti Located on exterior of buildino 1.09 4.2 1.1 - 1.U88 - .U77 Located in attic 1.11 Attic/Interior Radiation 0, 1.073 - 1.066 - .057 Control Coatinos (IRCC) 1.u 1.052 .045 1. .095 AtticJWhite roof 1. - .070 1. - - 1.054 1. 1.UU8 1.U1U 1.0mY Conditioned Space 6.0- 1.007 1.006 1.007 1.007 I.UOO 6M8 HEATING SYSTEM MULTIPLIERS (HSMI 8:lf 1.005 1.UlJ:> 1.006 1.005 1.000 SYSTEM TYPE See Tables lHl to 6-8 foe code minimums HEATING SYSTEM MULTIPLIERS (HSMI 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 Strip & Gas 1.0 (for gas credit multipliers, see Table 6A.21)