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WINTER POINT MULTIPLIERS (WPM) 98 WI'NTER OVERHANG FACTORS (WOF) 6 CLIMATE ZONES 4 5 6 :.-- _..~ ,,- .. f'- -' ~ OH RATIO 1.0-.11 .12-.17 .18-.26 I .27-.35 t .36-.46 J).47 -.57 .58- .70 I .71 .83 [84 1.18..-H.19 172:L 17~-?74.A 2.74+ I SINGLE PANE GLASS '----. I N 1.0 1.03 1.05 ,1.08 I 110 113 1.15 118 1.20 1..24 1.29 1.34 I NElNW 1.0 1.07 1.10 115 1.20 1.25 1.30 1.35 1.39 1.:50 1.59 1.67 I I ElW 1.0 .71 .57 .19 -.20 -.65 -1.05 -1.48 -2.03 -3.01 -4.06 -5.04 I SElSW >-1 1.0 .93 .90 80 .68 .54 .39 .22 .05 -33 -.71 -1.01 <XlI S 1.0 .95 .92 .83 .70 .54 .36 .13 -.13 -.70 -.98 -1 nq >-0:: ~o DOUBLE PANE GLASS u:l' (/). N 1.0 1.05 1.07 111 1.14 1.18 1.21 1.24 1.28 1.34 1.40 1.47 . I NElNW 1.0 1.11 1.16 1.24 1.32 1.41 1.48 1.56 1.63 1.80 1.94 2.08 I ElW 1.0 .88 .82 .66 .50 .31 .15 -.03 -.26 -.fi6 -1.10 -1.50 . I SElSW 1.0 .95 .92 .85 .76 .65 .54 .41 .28 -.01 -.30 -.52 . . S 1.0 .96 .94 .87 .78 .65 .51 .33 .13 -.30 -.51 -.60 ... OH LENGTH' o It. 1 It. 1V2 It. 2 It. 3 It. 31,2 It. 41,2 It 51,2 It. 61,2 It. 9Y2 It. 14 It. 201t.+ * To select by Overhang Length, no part of glass shall be more than 8 It. below the overhang OVERHANG RATIO = OH LENGTH OH HEIGHT r~L H J . 01 9C WALL WINTER POINT MULTIPLIERS (WPM) FRAME CONCRETE BLOCK' FACE BRICK WOOD STEEL INT. INSULATION EXT. INSUL. R.YALUE WOOD FR LOG NORMAL WT. NOR, WT. 6 INCH R.YALUE EXT ADJ EXT ADJ 0- 6.9 7.0 O. 6.9 6.8 5.3 9.4 6.7 R.YALUE EXT ADJ EXT 7 -10.9 2.1 R.YALUE EXT 7 - 10.9 2.5 _ __...2.L 4.4 3.3 0- 2.9 6.0 3.1 6.0 11.189 17 0-29 2.2 11,129 2.0 1.8 33 2.6 3 - 4.9 3.8 2.3 2.8 19 - 259 1.0 3,69 1.2 13,189 1.6 3.0 2.4 5 - 69 29 1.9 2.0 26 & Up .6 7 & Up 9 :0 BLOCK 8 INCH 19 - 259 1.1 1.0 2.6 22 7 -109 2.3 1.5 1.5 R.YALUE 26 & Un .7 .7 1.4 1.2 11,189 1.5 1;- 0,29 3.7 R.YALUE EXT 19 - 259 .8 3,69 2.6 0-29 1.2 26 & Up .5 .5 7,99 1.8 3 - 6.9 9 .0 :~~~~t~j~~ff:t J.itt@iMtl 10 & Up 1.3 7 & Up .7 90 DOOR WINTER POINT MULTIPLIERS (WPM) DOOR TYPE EXTERIOR ADJACENT WOOD 7.6 59 . . ,. .,~. INSULATED "---- ,5,1..._ .~.., 4.0 9E CEILING WINTER POINT MULTIPLIERS (WPM) UNDER ATTIC SINGLE ASSEMBLY R.VALUE WPM R-VALUE WPM 1.0 10 -10.9 1.8 .9 11,12.9 1.6 .7 13, 18.9 1.5 .6 19,25.9 1.1 .4 26 & U .6 CONCRETE DECK ROOF CEILING TYPE DROPPED EXPOSED 1.2 1.3 .7 .7 .4 .3 9F FLOOR WINTER POINT MULTIPLIERS (WPM) SLAB-ON-GRADE RAISED RAISED WOOD2 EDGE INSULATION CONCRETE POST OR PIER I STEM WALL WI UNDER I R-VALUE WPM R-VALUE WPM CONSTRUCTION FLOOR INSULATION ADJACENT R.YALUE WPIr I WPM I WPM 0-2.9 2.5 0-2.9 4.0 0- 69 7.9 5.3 3.4.9 1.7 3 - 4.9 1.8 7 -10.9 21 I .7 I 2.1 5 - 6.9 - 2.4 5 - 6.9 1.1 11 '18.9 1.5 I .5 I 1.8 7 & Un - 2.7 7 & Un .8 19 & Up 9 I .3 I 1.0 9G INFILTRATION WINTER POINT MULTIPLIERS (WPM) 9H DUCT MULTIPLIERS (DM) 1 For multipliers for other types of concrete block construction see section 903.2(b). 2 For multipliers for other types of raised wood assemblies see section 903.2 (e) 1. 3 Ducts in conditioned space need to be insulated only to the R-Value necessary to prevent condensation. -5 - Return Ducts Return Ducts R-Value In Unconditioned Space In Conditioned Space Supply 4.2-5.9 1.14 1.10 Ducts in 6.0-6.6 1.10 1.07 Unconditioned Space 6.7 & up 1.09 1.06 Supply 4.2-5.9 1.10 1.00 Ducts in 6.0-6.6 1.07 1.00 Conditioned Space3 6.7 & up 1.06 1.00 INFIL TRA TION PRACTIC"E WPM (See Table 9P) PRACTICE # 1 6.2 PRACTICE # 2 4.1 PRACTICE # 3 2.2