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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 ,0-,11 I ,12-,17 I .18-.26 I ,27 ,35 ,36- .46 .47-,57 ,58- .70 .71 ,83 ,84-1,18 1.19- 1.72 1.73-2.73 I 2.74+
<br />. SINGLE PANE GLASS
<br />. 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
<br />.
<br />. NE/NW 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 />.
<br />. E/W 1,0 ,71 ,57 ,19 -.20 -,65 -1.05 -1.48 -2,03 -3,01 -4,06 -504
<br />.
<br />::-. SE/SW 1,0 ,93 ,90 ,80 ,68 ,54 .39 ,22 ,05 -,33 -.71 -1.01
<br />co. S 1,0 ,95 ,92 ,83 ,70 ,54 ,36 ,13 -.13 -,70 -,98 _1 ()Q
<br />~~ DOUBLE PANE GLASS
<br />cd.
<br />(/). N 1.0 1.05 1.07 1.11 1,14 1,18 1,21 1.24 1.28 1,34 1.40 147
<br />.
<br />. NE/NW 1.0 1.11 1.16 1.24 1.32 1.41 1.48 1.56 1.63 1.80 1.94 2,08
<br />. ElW 1,0 ,88 ,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 />.
<br />. S 1,0 .96 .94 ,87 .78 ,65 ,51 ,33 ,13 -,30 -,51 -,60
<br />~ OH LENGTH' o It. 1 It. 11h It. 2 It. 3 It. 31h ft. 41h ft 51h It. 61h It. 91h It. 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 />
<br />H
<br />
<br />J
<br />
<br />9C WALL WINTER POINT MULTIPLIERS (WPM)
<br />FRAME
<br />
<br /> WOOD STEEL
<br />R.VALUE EXT ADJ EXT ADJ
<br />O. 6.9 6.8 5.3 9.4 67
<br />7.10.9 25 2.1 4.4 3.3
<br />11 - 12.9 20 1.8 3.3 2,6
<br />13 - 189 1.8 16 30 2.4
<br />19 - 259 1.1 10 2.6 22
<br />26 & U 7 7 1.4 1.2
<br />
<br />90 DOOR WINTER POINT MULTIPLIERS (WPM)
<br />
<br />DOOR TYPE EXTERIOR ADJACENT
<br />WOOD 7.6 5.9
<br />INSULATED 51 4.0
<br />
<br />9F FLOOR WINTER POINT MULTIPLIERS (WPM)
<br />
<br />
<br />01
<br />
<br />CONCRETE BLOCK I
<br />INT. INSULATION EXT. INSUL
<br />NORMAL Wi. NOR. Wi.
<br />EXT ADJ EXT
<br />60 3.1 6.0
<br />3.8 2.3 2.8
<br />29 1.9 2.0
<br />2.3 1,5 1.5
<br />1,5 11 .8
<br />.8 7
<br />.55
<br />
<br />FACE BRICK
<br />R.VAWE WOOD FR
<br />O. 6.9 7.0
<br />7 -10,9 2,1
<br />11 -18.9 17
<br />19 . 25,9 1.0
<br />26 & Up ,6
<br />R.VALUE BLOCK
<br />o . 2.9 37
<br />3 . 6,9 2,6
<br />7.9,9 1.8
<br />10 & U 1.3
<br />
<br />
<br />LOG
<br />6 INCH
<br />R.VALUE
<br />0.2.9
<br />3.6.9
<br />7 & Up
<br />8 INCH
<br />R.VALUE
<br />0.2.9
<br />3 - 6.9
<br />7&U
<br />
<br />EXT
<br />22
<br />12
<br />.9
<br />
<br />EXT
<br />1.2
<br />9
<br />7
<br />
<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 1,8
<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 />
<br />CONCRETE DECK ROOF
<br />CEILING TYPE
<br />DROPPED EXPOSED
<br />1.2 1.3
<br />.7 .7
<br />.4 .3
<br />
<br />
<br />...::::...;~::- ;::':;';~::"""
<br />
<br />SLAB-ON-GRADE RAISED RAISED WOOD"
<br />EDGE INSULATION CONCRETE POST OR PIER I STEM WALL WI UNDER I
<br />R.VALUE WPM R.VALUE WPM CONSTRUCTION FLOOR INSULATION ADJACENT
<br />R.VAWE WPM I WPM I WPM
<br />0-2.9 2,5 0-2.9 4,0 0- 69 7.9 5,3
<br />3 - 4.9 1.7 3 - 4.9 1.8 7 -10.9 2.1 I 7 I 21
<br />5 - 6.9 2.4 5 - 6.9 1,1 11 -18.9 15 I .5 I 1.8
<br />7 & lJn - 2.7 711. Iln .8 19 & Up .9 I ,3 I 1.0
<br />
<br />9G INFILTRATION WINTER POINT MULTIPLIERS (WPM)
<br />
<br />INFIL TRA TlON PRACTIC'E WPM
<br />(See Table 9P)
<br />PRACTICE # 1 6.2
<br />PRACTICE # 2 4.1
<br />PRACTICE # 3 2.2
<br />
<br />9H DUCT MULTIPLIERS (OM)
<br />
<br /> Heturn Uucts 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 of 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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