Document 5LQOD1E166Nmao63OB7pRjL0J
HEATING VENTILATING AIR CONDITIONING GUIDE 1940
Table 4. Coefficients of Transmission (U) of Masonry Walls with Various Types of Veneers
Coefficients are expressed in Btu per hour per sguarc foot per degree Fahrenheit difference in temperature between the air on the two stdes, and are based on a wind velocity of 15 mph.
TYPICAL CONSTRUCTION
TYPE OF WALL
Facing
Backing
Wau, No.
4 in. Brick Veneer1
6 in.
8 in. 10 in.
Hollow Tile*
12 in.
37 38 39 40
4 In. Brick Veneer-
6 in. 10 in. Concrete 16 in.
41 42
43
8 in. Cinder Blocks 8 in. Cinder Blocks -- Cores filled with granulated cork. 5.12 lb per cu ft. 12 in. Cinder Blocks 12 in. Cinder Blocks -- Cores filled with granulated cork. 5.24 lb per cu ft.
8 in. Concrete Blocks 8 in. Concrete Blocks--Cores filled with granulated cork, 5.14 lb per cu ft. 12 in. Concrete Blocks 8 in. Burned Clay aggregate Block 8 in. Burned Clay aggregate Block--Cores filled with gran ulated cork, 5.06 lb per cu ft. 12 in. Burned Clay aggregate Block 12 in. Burned Clay aggregate Block--Cores filled with gran ulated cork. 5.6 lb per cu ft.
44
45 46
47 48
49 50 51
52 53
54
4 in. Cut-Stone Veneer-
8 in. 12 in. Common Brick
16 in.
55 56
57
4 in. Cut-Stone Veneer-
6 in.
8 10
in. in.
Hollow
Tile*
12 in.
58 59 60 61
4 in. Cut-Stone Veneer-
6 in. 10 in. Concrete
16 in.
62
63 64
Computed from factors marked by * in Table 2.
kBased on the actual thickness of 2-in. furring strips. .
- T.
The 6-in.. 8-in. and 10-in. tile figures are based on two cells in the direction of heat flow. The 12-m.
tile i9 based on three cells *u the direction of heat flow.
CHAPTER 5. HEAT TRANSMISSION COEFFICIENTS AND TABLES
INTERIOR FINISH
Uninsulated Walls
Insulated Walls
Plaster on wood lath--furred
Plaster (Vi Id.) on
metal lath f--urred No plaster--deco rated rigid or build ing board interior finish (Vi in.)-- furred blaster (Vi in.) on rigid ioaulation (1 in.)--furred
1Plaster IM in.) on
metal latn attached
to furring strip e -
furred space (over Vi in. wide) faced one side with bright aluminum foil
.is c oa jS kX
3S 2-S
5-
jl
fin *
5
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2s
ao.-S-Sr--3g>3
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ABCD E
F
GH
i
J
KL
0.36 0.34 0.24 0.25 0.24 0.34 0.33 0.24 0.25 0.24 6.34 0.32 0.23 0.24 0.23 0.27 0.26 0.20 0.21 0.20
0.19
0.19 0.19
0.16
0.19 0.15
0.18 0.14
0.18 0.14 0.16 0.13
0.13 0.12 0.12
0.11
0.19 0.19 0.19
0.16
0.11 0.11
0.11 0.10
0.17
0.17 0.17
0.15
0.57 0.53 0.33 0.35 0.33 0.48 0.45 0.30 0.31 0.30 0.39 0.37 0.26 0.27 0.26
0.24 0.22
0.20
0.23 0.17 0.14 0.22 0.16 0.14 0.19 0.15 0.13
0.35 0.33 0.24 Q.25 0.24 0.19 0.18 6.14 0.12
0.20 0.19 0.16 0.16 0.16 0.31 0.30 0.22 0.23 0.22
0.13 0.18
0.13 O.lt 0.10
0.17 0.14 0.12
0.18 0.18 0.15 0.15 0.15 0.44 0.42 0.28 0.30 0.28
0.13 0.21
0.12 0.10 0.09 0.21 0.16 0.13
0.34 0.32 0.24 0.25 0.23 0.40 0.38 0.26 0.28 0.26 0.31 0.29 0.23 0.23 0.22
0.19 0.20
0.18
0.18 0.14 0.20 0.15
6.17 0.14
0.12 0.13
0.12
0.17 0.16 0.14 0.14 0.14 0.29 0.28 0.21 0.22 0.21
0.12 0.17
0.12 0.10 0.09 0.17 0.13 0.12
0.14 0.14 0.12 0.12 0.12 0.10 0.10 0.09 0.08
0.37 0.35 0.25 0.26 0.25 0.28 0.27 0.21 0.21 0.21 0.23 0.22 0.18 0.18 0.18
0.19 0.17
0.15
6.19 0.15 0.13 0.16 0.13 0.12
0.12 0.11
0.24 0.22 0.20
0.19
0.13 0.18
0.13 0.21
0.19 0.20 0.18
0.12 0.17
0.10
0.19 0.17 0.15
0.13 0.12 0 11
0.11
0.09 0.11
0.08 0.12
0.11 0.11 0.11
0.08 . 0.10
0.07
0.11 0.10 0.095
0.21 0.20 o;i8
0.17
0.12 0.16
0.12 0.19
0.17 0.18 0.16
0.11 0.16
0.10
0.17 0.15 0.14
0.37 0.35 0.25 0.26 0.25 0.36 0.34 0.24 0.25 0.24 0.35 0.33 0.24 0.25 0.24
0.26 0.20 0.21 0.20
0.20 0.19 0.19 0.17
0.19 0.15 0.19 0.15 0.18 0,14 0.16 0.13
0.13
0.13 0.12
0.11
0.20 0.19 0.19 0.17
0.11
0.11
0.11 0.10
0.18
0.17 0.17
0.15
0.61 0.51
0.56 0.47
0.84 0.31
0.36 0.32
0.34 0.31
0.41 0.38 0.26 0.28 0.26
0.25 0.23 0.20
0.24 0.18 0.15 0.22 0.17 0.14
0.20 0.15 0.13
0.25
0.23 0.21
0.13 0.12
0.11
0.22 0.20 0.18
_ ----uawama vTa *u./ uciwccu vcucci or lacing auu pacKing.
tfased on one air cell in direction of heat flow.
A waterproof membrane should be provided between the outer material and the insulation fill to prevent possible wetting by absorption and a subsequent lowering of efficiency.
ins