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<br />WINTER POINT MULTIPLIERS (WPM)
<br />
<br />98 WINTER OVERHANG FACTORS (WOF)
<br />
<br />CLIMATE ZONES 4 5 6
<br />
<br />~ OH RATIO 1.0 .11 .12 .17 ,16 .26 .27 35 ,36 46 47 ,57 .58 70 71 ,63 .84- 1.1 6 1.19 1.72 1.73 2.73 I 274+
<br />I SINGLE PANE GLASS
<br />I 1.0 1,03 1.05 .1.06 1,10 1,13 1.15 1,18 1.20 124 1.29 1.34
<br />I N
<br />I 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
<br />I
<br />I E/W 1,0 ,71 ,57 ,19 -.20 -,65 -1.05 -1.46 -203 -3.01 -406 -504
<br />. ,39 .22 ,05 -,33 -71 -1,01
<br />;;-1 SElSW 1.0 ,93 ,90 .80 ,66 ,54
<br />CDI S 1.0 ,95 ,92 ,83 ,70 ,54 ,36 ,13 -,13 -.70 -,98 -10Q
<br />"""cc
<br />~o DOUBLE PANE GLASS
<br />uJl
<br />(/). N 1,0 1,05 1,07 1.11 1.14 1.18 1.21 1,24 1.26 1.34 1.40 147
<br />I
<br />. NElNW 1,0 1,11 1.16 1.24 1.32 1.41 146 1.56 1.63 1,80 1.94 2.08
<br />I E/W 1,0 ,66 .82 ,66 ,50 .31 .15 -.03 -,26 -,66 -1.10 -1.50
<br />.
<br />. SElSW 1,0 ,95 ,92 .85 ,76 ,65 ,54 41 ,28 -,01 -30 -,52
<br />I
<br />. S 1.0 ,96 .94 .67 ,78 .65 ,51 ,33 ,13 -.30 -.51 -.60
<br />... OH LENGTH' o It. 1 It. 1'12 It 2 It. 3 It. 3% It 4% ft 5112 It. 6% It. 9112 ft. 14 It. 20 It. +
<br /> . To select by Overhang Length, no part of glass shall be more than 8 ft, below the overhang
<br />
<br />OVERHANG RATIO =
<br />
<br />
<br />OH LENGTH
<br />OH HEIGHT
<br />
<br />r~L
<br />H
<br />
<br />J
<br />
<br />9C WALL WINTER POINT MULTIPLIERS (WPM)
<br />
<br />
<br />
<br />01
<br />
<br /> FRAME CONCRETE BLOCKl FACE BRICK
<br /> WOOD STEEL INT. INSULATION 00. INSUL. R,YALUE WOOD FR LOG
<br /> NORMAL WT. NOR. WT. 0, 6,9 7,0 6 INCH
<br />R.YALUE EXT ADJ 00 ADJ
<br />0- 69 68 5.3 9.4 6.7 R.YALUE EXT ADJ EXT 7, 10,9 2,1 R.YALUE EXT
<br />7 10,9 2,5 2,1 4.4 33 O. 2,9 6,0 3,1 6,0 11 18,9 1.7 O. 2,9 22
<br />11 -12,9 2,0 1.8 3,3 2,6 3- 4,9 3.8 2,3 2,8 19 - 25,9 1,0 3 -6,9 1,2
<br />13 189 1,8 1.6 3,0 2,4 5. 6,9 2,9 1.9 2,0 26 & Up 6 7& 00 ,9
<br />19.25,9 1.1 10 2,6 22 7 - 10,9 2,3 1.5 1.5 R.YALUE BLOCK 8 INCH
<br />26 & Un .7 .7 1.4 1,2 11 18,9 1.5 1,1 .8 0-2,9 3.7 R,YALUE EXT
<br /> 19 - 25,9 ,8 ,7 Mj&:;~:;;~~$t:rt. 3. 6,9 2,6 0-2,9 1.2
<br /> 26&Up ~ d?qtl~Mtlt* 7- 9,9 1.8 3.6,9 ,9
<br /> ~t~j(tt~}tfl}~11~t@@lj~j jf~rt:~tt}:~jtj ::~~Mj~r{Jt:llti~ 10 & Uo 13 7 & Uo .7
<br />
<br />90 DOOR WINTER POINT MULTIPLIERS (WPM)
<br />
<br />DOOR TYPE EXTERIOR ADJACENT
<br />WOOD 7.6 5,9
<br />INSULATED 5,1 4,0
<br />
<br />9E CEILING WINTER POINT MULTIPLIERS (WPM)
<br />
<br />UNDER ATTIC SINGLE ASSEMBLY
<br />R.VALUE WPM R.VALUE WPM
<br />19-21,9 1.0 10-10,9 1.6
<br />22-25.9 .9 11-12,9 1,6
<br />26 - 29.9 .7 13 - 18.9 1.5
<br />30 - 37,9 .6 19.25,9 1.1
<br />38 & U .4 26 & U .6
<br />
<br />CONCRETE DECK ROOF
<br />CEILING TYPE
<br />DROPPED EXPOSED
<br />1.2 1,3
<br />,7 .7
<br />.4 ,3
<br />":::"::::~~';5::. ....:..:~ ...
<br />
<br />
<br />
<br />9G INFILTRATION WINTER POINT MULTIPLIERS (WPM)
<br />
<br />INFIL TRA TION PRACTIC]: WPM
<br />(See Table 9P)
<br />PRACTICE # 1 6.2
<br />PRACTICE # 2 4.1
<br />PRACTICE # 3 2.2
<br />
<br />
<br />ADJACENT
<br />
<br />5,3
<br />21
<br />1.8
<br />1.0
<br />
<br />0- 6,9
<br />7 -10,9
<br />11 -18.9
<br />19 U
<br />
<br />9H DUCT MULTIPLIERS (OM)
<br />
<br /> Return Ducts Return Ducts
<br /> R.Value In Unconditioned Space In Conditioned Space
<br />Supply 4,2-5,9 1.14 1.10
<br />Ducts in 6,0-6.6 1,10 1,07
<br />Unconditioned Space 6.7 & up 1.09 1.06
<br />Supply 4.2-5,9 1.10 1.00
<br />Ducts in 6.0-6.6 1.07 1.00
<br />Conditioned Space3 6,7 & up 1.06 1.00
<br />
<br />1 For multipliers for other types of concrete block construction see section 903.2(b).
<br />2 For multipliers for other types 01 raised wood assemblies see section 903.2 (e) 1.
<br />3 Ducts in conditioned space need to be insulated only to the R-Value necessary to prevent condensation.
<br />-5 -
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