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WINTER POINT MULTIPLIERS (WPM) 98 WINTER OVERHANG FACTORS (WOF) CLIMATE ZONES 4 5 6 ~ OH RATIO .0-.11 .12-.17 rr.18-.2.6A .27-.35 I .36-.46 .47-.57 .58-.70 1.71-.831'].84-1.18 .JI1.19 1.72 I 1.73 2.73\... .2.74+ ) - SINGLE PANE GLASS ----=.-.. ~ I N 1.0 1.03 1.05 .1.08 1.10 1.13 - 1.15 1.18 1.20 1.24 1.29 1.34 - NElNW 1.0 1.07 1.10 1.15 1.20 1.25 1.30 1.35 1.39 1.50 1.59 1.67 - - ElW 1.0 .71 .57 .19 -.20 -.65 -1.05 -1.48 -2.03 -3.01 -4.06 -5.04 - >-- SElSW 1.0 .93 .90 .80 .68 ,54 .39 .22 .05 -.33 -.71 -1.01 co_ S 1.0 .95 .92 .83 .70 .54 .36 .13 -.13 -.70 -.98 -1.09 f-a:: &30 DOUBLE PANE GLASS u::- (/)- N 1.0 1.05 1.07 1.11 1.14 1.18 1.21 1.24 1.28 1.34 1.40 1.47 - - 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 E/W 1.0 .88 .82 .66 .50 .31 .15 -.03 -.26 -.66 -1.10 -1.50 - I SElSW 1.0 .95 .92 .85 .76 .65 .54 .41 .28 -.01 -.30 -.52 I I S 1.0 .96 .94 .87 .78 .65 .51 .33 .13 -.30 -.51 -.60 .. OH LENGTH · 011. 1 It 1% It 2 It 3 It 3% It 4% It 5% It 6% It 9% 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 I k-L H J 9C WALL WINTER POINT MULTIPLIERS (WPM) 01 FRAME CONCRETE BLOCK' FACE BRICK WOOD STEEL INT. INSULATION EXT. INSUL. R.VALUE WOOD FR LOG NORMAL WT. NOR. WT. 0- 6.9 7.0 6 INCH R.VALUE EXT ADJ EXT ADJ 0- 6.9 6.8 5.3 9.4 6.7 R,VALUE EXT ADJ EXT 7 -10.9 2,1 R.VALUE EXT .J ,.J.O.a. 2.5 2,1 4.4 3.3 0- 2.9 6.0 3,1 6.0 11.18,9 17 0-2.9 22 3 - 4.9 3.8 23 2.8 19 - 25.9 1.0 3 - 6.9 1.2 _ 11 .12]...- 2.0 1.8 3.3 2.6 13.18.9 1.8 1.6 3.0 2.4 5. 6.9 2.9 1.9 2.0 26 & Up .6 7 & Up .9 19 - 25.9 1.1 1.0 2.6 22 7 - 10.9 2.3 1.5 1.5 R.VALUE BLOCK 8 INCH 11 -18.9 1.5 1.1 iii 0-2.9 3.7 R.VALUE EXT 26 & Uo .7 .7 1.4 1.2 19.259 .8 .7 3 - 6.9 2.6 0-2.9 1.2 26 & Up .5 .5 7 - 9.9 1.8 3 - 6.9 .9 .~.' " ..lM t~h?tNfu11~W~' l~!}{<ti~ 10 & Up 1.3 7 & Up 7 9D DOOR WINTER POINT MULTIPLIERS (WPM) DOOR TYPE EXTERIOR ADJACENT WOOD 7.6 5.9 INSULATED 5.1 4.0 9F FLOOR WINTER POINT MULTIPLIERS (WPM) 9E CEILING WINTER POINT MULTIPLIERS (WPM) UNDER ATTIC SINGLE ASSEMBLY R.VALUE WPM R-VALUE WPM 19.21.9 1.0 10 -10.9 1.8 22.25.9 .9 11 - 12.9 1.6 26 - 29.9 .7 13.18.9 1.5 30.37.9 .6 19.25.9 1.1 38 & U .4 2 U .6 CONCRETE DECK ROOF CEILING TYPE DROPPED EXPOSED 1.2 1.3 .7 .7 .4 .3 SLAB.QN.GRADE RAISED RAISED WOOD' EDGE INSULATION CONCRETE POST OR PIER I STEM WALL WI UNDER I CONSTRUCTION FLOOR INSULATION ADJACENT R.VALUE WPM R.VALUE WPM R,VALUE wpM I I WPM 0.2.9 2.5 0-2.9 4.0 0- 6.9 7,9 5.3 3 - 4.9 - 1.7 3 - 4.9 1.8 7 -10.9 2.1 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 & Uo 2.7 7 & Uo .8 19 & Up .9 I .3 I 1.0 9G INFILTRATION WINTER POINT MULTIPLIERS (WPM) INFIL TRA TION PRACTIC'E WPM (See Table 9P) PRACTICE # 1 6.2 PRACTICE # 2 4.1 PRACTICE # 3 2.2 9H DUCT MULTIPLIERS (OM) 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 Space' 6.7 & up 1.06 1.00 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. , Ducts in conditioned space need to be insulated only to the R-Value necessary to prevent condensation. -5 -