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HEATINC VENTILATING AIR CONDITIONING CUIDE 1943
Table 2. Conductivities (k) and Conductances (C) of Building Materials and Insulators2--Continued
The coefficients are expressed in Btu per hour per squarefoot per degree Fahrenheit per 1 in thickness unless otherwise indicated.
Material
Description
1
oP Is
EaB an;
& 5g
ad Is
-!** -- jo
g1 ig ii
INSULATION--RIGID Corkboard Fiber__
__ Typiwil No adaded binder__ ____ ....
aa
am
a
a
Asphaltic binder....
Chemically treated hog hair covered with
* " exploded wood fibers * * hard wood fihara insulating plaster 9/10 in. thick applied to
Made from licorice roots. " " 85% magnesia and 15% asbestos " " shredded wood and cement____
Sugar cane fiber insulation blocks encased in
Made from wheat straw
*
a
*
a
wooad mfiber
aa
aa
aa
aa
aa aa
as
ca
insulation-reflective See Table 1, Section C BUILDING BOARDS
Compressed cementand asbestos sheets:......
Pressed asbestos mill hoard Gypsum between layers of heavy paper Rigid, gypsum between layers of heavy
Plasterboard ROOFING CONSTRUCTION
RonriNn
Snram.ER
Gypsum mixed with sawdust between layers of heavy paper (0.39 in. thick).
(H in.)
Built up--ZA in. thick Built up, bitumen and felt, gravel or gk>g
surfaced* Plasterboard, gypsum fiber concrete''and
3-ply roof covering 2K in. thick________
Wood,,
PLASTERING MATERIALS Plaster..
Gypsum, tvjncal ........ Gyysum and expanded vermiculite mix 4 to 1 Thickness Vi in Metal Lath and Plaster.__ Total thiekneffl VI in Wood Lath and Plaster.-.. . H in. plaster, total thickness Vi in BUILDING CONSTRUCTIONS 1-in. fir sheathing and building paper 1-in. fir sheathing, building paper, and
yellow pine laD aidinv Inn. fir sheathing, building paper and stucco Pine lap siding and building paper--aiding
For notes see Page 97.
Yellow pine lap siding
100
14.00 10.60 7.00 5.40 14.50
90 90 90 90 90
10.00 15.00 15.2054.00 16.10 19.30 24.20 13.50 13.80 17.00 .15.90 15.00 8.50 15.20 16.90
75 71 78 70 75 81 86 72 70 70 68 72 70 52 72 90
123.00 20.40 60.50 62.80 53.50 60.70
86 110 86 70
90
90 --_
70.00 75
52.40 65.00 '70.00
.76 75 _
39.9 75 73 70
30
-- 20 16
--
0.34 2.94 0.30 3.33 0.27 0.25 4.00 0.32
033 0.32 0.32
1.07f 0.34 0.51 0.46 0.33
0.33 0.33 0.33 0.33 0.29 0.33' 0.34
3.12 3.12
0.93 2.94 1.96 2.17 3.03
3^03 3.03 3.03 3.03 3.45 3.03 2.94
2.70 0.37 0^84 1.19
0.71
3.60t 4. f J| 2.82f* 6.50f 3.53f*
0.28 0.35
0.28
0.58f 6.50f* h28f*
1.72 0.15 0.78
3^30* 0.85
8.80t 4.40t* 2.50t*
0:30 1.18 0.11 0.23 0.40
O.Mf* . 1.16 0.50f* 2.00 0.82 1.22
1.28f* 0.78
id
) in in in
(3) (3) (0 (3) (3) 3) 1) (3). (3)
(3) (3) (3) (6) (3) (3) (1)
(1) (2) (1) (3)
(1) "
(3)
(4) (3) (3)
(3)
(4)
(4)
14)
Conductivity (*) OR
ConoOctancb(C) A uthority
Density (Lb per Co Ft)
CHAPTER 4. HEAT TRANSMISSION COEFFICIENTS
Table 2. Conductivities (k) and Conductances (C) of Building Materials and Insulators2--Concluded
The coefficients are expressed in Btu per hour per square foot Per degree Fahrenheit per 1 in. thickness unless otkervHse indicated.
Material
Description
tgI.*4> aW
Si'S
>-
fc
a
SB
Psao Ps5o*.
o9
gg1 3 ed Pi
*
a e
building
CONSTRUCTIONS --(Continued)
40.00 75
1.20
0.83
1.36f* 0.74
(3) _
WOODS (Acres! Grain) California Redwood--------_
Eastern Hemlock-------------
tt ir
16% 169&
Longleap Yellow Pine_____
6% .
16%
*
------------- ---------------------
Mahogany______________________
..
20.0 8.8
7.3
22.0
- 28.0
22.0 28.0
28.7 26.0
34.0
26.0 34.0
22.0 30.0
22.0 30.0
40.0
46.0 40.0
46.0
30.0
40.0 30.0
40.0 34.3
44.3
Red Cypress--------------------
8hobtleaf Yellow Pine____
Soft Elm_________________
8ugab Pine____________ _______
Virginia Pin*____________ West Coast Hemlock.____
16% . "---------------------------------------\Wq .*--------------------------------------------------------
0% 16%
* "
0% moisture
ia
*
nb?0
16%
22.0
32.0 22.0 32.0 22.0
32.0 22.0 32.0 38.0 ' 48.0
38.0 48.0 26.0 36.0
26.0 36.0 28.0 34.0 28.0 34.0 36.0
42.0 36.0
42.0 22.0 28.0
22.0 28.0
34.3 22.0
.30.0 22.0 30.0
31.2 .
Yellow Pine or Fib---------- ___: -
--
For notes see Page 97.
101
90 90 90
75 75 75 75 86 75 75 75 75
7575 75 75 75 75 75 75 75 75 75 75 86 86
75 75 75 75 75 75 75 75 75 75 75 ' 75 75 75 75 75 75 75 75
75 .75
75 75 75 75 75 75 75 86 75 75
fS
75
8_6
~
0.58 0.38 0.33
0.66 0.70 0.74 0.80
0.67 0.61
0.67 0.76 0.82 0.60 0.76
0.67 0.85
1.01 1.05
1.15 1.21
0.76 0.86 0.89 1.03 0.90 1.10 1.15*
0.62 0.74
0.74 0.91
0.67 0.79
0.74 0.90 0.98 1.18 1.07 1.29 0.74
0.91 0.84
1.04 0.73
0.88 0.81 0.97
0.89 0.9S
1.01 1.09
0.54 0.64 0.65 0.78
0.96 0.68 6.79
0.78 0.91 0.78
1.00 0.80*
1.72 2.63 . 3.03 1.53 1.43
1.35 1.25 1.49 1.64
1.49 1.32 1.22 1.67
1.32 1.49 1.18
0.99 0.95
0.87 0.83
1.32 1.16
1.12 0.97 1.11 0.91 0.87 1.61 1.35 1.35 1.10
1.49 1.27 1.35
1.11
1.02 0.85 0.94 0.78
1.35 1.10 1.19
0.96 1.37 1.14 1.24
1.03 . 1.12
1:05 0.99 0.92
1.85 1.56 1.54
1.28 1.04
.1.47 1.27
1.28 1.10
1.28 1.00 1.25
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a) (4) (4) (4) (4)
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