Document MoanOReRj1j7ezoQNM5Kj58q9
Number Number
American Society of Heating and Ventilating Engineers Guide, 1932
Table 22. Coefficients of Transmission (U) of Wood Shingle Frame Walls
Note.--These coefficients are expressed in Btu per hour per square foot per 1 dec fahr
DIFFERENCE IN TEMPERATURE BETWEEN THE AIR ON THE TWO SIDES AND ARE BASED ON AN OUTSIDE WIND EXPOSURE OF 15 MILES PER HOUR.
The valued of U in this Table are ba^edonthefollowmq
Internal Conductivities orConductances which are
expressedin B.tu. per Ur per Sq. Ft. per lF
Wood (Yellow Pine or Fir)
1.00 per I
Plaster (Gypsum)
2.31 per r
Plaster board
3.*75 per
Cork board
WwdLath d Plaster
2.80 per y 0.30 per r 2.00 asapplied
Kiqid Insulation (kodrdfornT)
0.33 per C
Flexible Insulation Cellular Gypsum (18*) Flaked Gypsum (24*)
0.27 per 1" 0.5<* per r 0.48 per 1"
Typical Construction 2V4" $Vuds
Wood Shrnqle
Sheathincj
Ir
Shealhinq
Insulation between Studdinq
Wood Lath
A
Metal Lath
B
Plaster 8ase
1rr
It
Plaster Bjqid ktqid Cork-
board Insulation Insulation board
c DEF
V
Corkboard
G
1
None
0.262 0.275 0.263 0.118 0.153 0.117 0.018
2 1" Wood c
3
A 5
Flaked Gypsum Fill (24*) a
0.0%
0.018
0.016
0.086
0.076
0.067
0.060
Cellular Gypsum
Fill (18*) *-d
0.111
0.113 0.111
0.017 0.085 0.073 0.065
4*Flexible Insulation
0.152 0.157 0.153 0.128 0.107 0.081 0.077
None
0.183 0.110 0.184 0.150 0.122 0.018 0,085
(0
T..2.iqid Insulation
Flaked Gypsum Fill (24*) 0
0.083 0.084 0.083 0.076 0.068 0.060 0.055
(Board form) b
7
Cellular Gypsum
Fill (18*) *-a
0.014
0.015
0.014
0.084 0.075
0.065 0.051
8
4 Flexible Insulation
0.122 0.125 0.122 0.106 0.011 0.077 0.061
1
None
0.233 0.243 0.234 0.181 0.142 0.UI 0*014
4 Plaster
10 board b
U
Flaked Gypsum Fill (24*) a
0.011
0.013 0.012 0.083 0.074
0.065 0.051
Cellular Gypsum
Fill 08*) a-d
0.105
0.107
0.105
0.013 0.081
0.070 0.063
VI
2 Flexible. Insulation
0.142 0.146 0.142 0.12! 0.102 0.085 0.074
Thickness of fill assumed 3% in., based on 2 in. by 4 in. studding.
bFurring strips between wood sbingles and sheathing.
Based on /6 in., the actual thickness of 1 in. or % in* sheathing. Building paper neglected.
dThe coefficient used for cellular gypsum. 0.59 is for 18 lb. weight--weights as low as 12 lb.-may be used.
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Chapter 3--Heat Transfer Through Materials'and Constructions
Table 23. Coefficients of Transmission (U) of Stucco Frame Walls
Noie.--These coefficients are expressed in' Btu per hour per square foot per 1 dec fahr
DIFFERENCE IN TEMPERATURE BETWEEN THE AIR ON THE TWO SIDES AND ARE BASED ON AN OUTSIDE WIND EXPOSURE OF 15 MILES PER HOUR.
Thevalues of U inttns Table are basedon the followinq
Internal Conductivities or Conductances which are
expressed in B.t.u. per Hr per Sq.Ft. per PE
Wbod (kfellow Pine or Fir)
1.00 perl"
Plaster (Gypsum)
2.32 perp
Plaster board
3.73 per V Z.80 peri"
Cork board
0.30 per P
Wood Lath 1 Plaster
2.00 asapplied
Ciqid Insulation (Board farm) 0.33 per P
Flexible Insulation
0.27 per P
Cellular Gypsum. (18*)
<253 per 1"
Flaked Gypsum (24*)
0.48 per P
Brick
5.00 per p
Stucco
8.00 per P
Typical Constructior
;
Sheathinq \
PI *tucay
uds
| //
Type of Sheathmq
insulation between -Studdinq
Plaster Base
Wood Metal v
r If
Lath Lath Plaster Ciqtd kiqid Cork-
board Insulation Insulation board
A B c DE F
V
Cortbaerd
G
( f Wood b
eNone
a 302 0.311 0.304 0.220 0.165 0.125 0.103
2
Flaked Gypsum Fill (24*) a
Q101
0.102
0.101
0.081
0.071 0.068 0.061
3
Cellular Gypsum Fill (18*) a-c
0.117
0.120 aii7
0.103 0.081 0.075 0.067
4
t Flexible Insulation
0.165 0.161 0.165 0.137 0.113 0.013 0.080
5 ^ Ciqid
Insulation
6 (board form)
None
0.247 0.251 0.248 0.110 0147 0.114 0.016
Flaked Gypsum Fill (24*) a
0.014
0.015
0.014
0.084
0.07S
0.065
0.058
Cellular Gypsum
7 Fill (!&*) a-c 0.108 0.110 0.108 0.015 0.083 0.072 0.064
8
Flexible
Insulation
0.147 0.151 0.147 0.125 0.105 0.087 0.076
1 1 Plaster
board
10
11
12
None
0.347 0.361 0.341 0.243 6.178 0.131 0.108
Flaked Gypsum
Fill (24*)
0.105
0.107
0.105
0.013 0.081
0.076
0.063
Cellular Gypsum
Fill (18*) a"c 0.123 0.126 0.124 0.107 Q012 0.078 0.061
Flexible. Insulation
QI77 0.183 0.178 0146 am 0017 ao83
Thickness of fill assumed in., based on 2 in. by 4 in. studding. bBased on in., the actual thickness of 1 in. or % in. sheathing. Building paper neglected. cThe coefficient used for cellular gypsum, 0.59 is for 18 lb. weight--weights as low as 12 lb. may be used.'
55