Masonry Magazine July 1975 Page. 17
Table 6
CONSTRUCTION: 8" Composite Wall: 4" dense units; 4" hollow units in inner wythe
Density of concrete used in block, Ibs, per cu. ft. (inner wythe)
Approximate weight of masonry, Ibs, per sq. ft.
60 80 100 120 140
52 56 60 65 69
WALL DETAILS
"U" VALUE
No insulation
.30 34 37.41.49
No insulation, " gypsum board on furring strips
21 23 24 26 29
No insulaiton, %" foil backed gypsum board on furring strips
15 15 16 17 18
1" rigid glass fiber insulation & ½" gypsum board applied direct to wall surface
13 14 14 14 15
1" polystyrene insulation & ½" gypsum board applied direct to wall surface
11 12 12 13 13
1" polyurethane insulation & ½" gypsum board applied direct to wall surface
10 10 11.11.11
R-7 blanket insulation, ½" gypsum board
09 10 10 10 10
Table 7
CONSTRUCTION: 12" Composite Wall: outer wythe - 4" dense units; inner wythe-8" hollow units
Density of concrete used in block, lbs. per cu. ft.
Approximate weight of masonry, Ibs. per sq. ft.
60 80 100 120 140
62 70 78 85 93
WALL DETAILS
"U" VALUE
No insulation
28 .29 .33 .36 .44
No insulation, ½" gypsum board on furring strips
20 21 22 24 27
No insulation, " foil backed gypsum board on furring strips
14 14 15 16 17
Loose-fill insulation in cores
.11.14 .16 .20 .31
Loose-fill insulation in cores, ½" gypsum board on furring strips
10 11 13 15 21
Loose-fill insulation in cores, ½" foil backed gypsum board on furring strips
.08.09 .10 .12 .15
1" rigid glass fiber insulation & ½" gypsum board applied direct to wall surface
.12.13 13 14 15
1" polystyrene insulation & ½" gypsum board applied direct to wall surface
11 11 12 12 13
1" polyurethane insulation & ½" gypsum board applied direct to wall surface
.10 10 10 11 11
Same as (7) plus cores filled with loose-fill insulation
.08 .08 .09.10 13
Same as (8) plus cores filled with loose-fill insulation
07 08 09 10 11
Same as (9) plus cores filled with loose-fill insulation
.06.07 .08 .09.10
R-7 blanket insulation, ½" gypsum board
09.09.10 10 10
Table 8
CONSTRUCTION: 10" Cavity Wall: 4" dense outer wythe, 2" air space, 4" hollow unit inner wythe
Density of concrete used in block, lbs. per cu. ft.
Approximate weight of masonry, Ibs, per sq. ft.
60 80 100 120 140
52 56 60 65 69
WALL DETAILS
"U" VALUE
No insulation
23 25 27 29 33
No insulation, ½" gypsum board on furring strips
18 19 20 21 22
No insulation, " foil backed gypsum board on furring strips
13 13 14 14 15
Loose-fill insulation in cavity
.14 14 15 .15 .17
Loose-fill insulation in cavity, %" gypsum board on furring strips
11 11 12 13 13
Loose-fill insulation in cavity, ½" foil backed gypsum board on furring strips
09 10 10 10 10
1" rigid glass fiber insulation in cavity
12 13 13 13 14
1" polystyrene insulation in cavity
.11 11 12 12 12
1" polyurethane insulation in cavity
09 10 10 10 11
Same as (7) plus ½" gypsum board on furring
10 11 11 11 12
Same as (8) plus ½" gypsum board on furring
09 10 10 10 11
Same as (9) plus ½" gypsum board on furring
08 09.09.09.09
Same as (7) plus ½" foil backed gypsum board on furring
.08.09 09.09.09
Same as (8) plus %" foil backed gypsum board on furring
07.07.07 07 08
Same as (9) plus ½" foil backed gypsum board on furring
06 07 07.07.07
2" rigid glass fiber insulation in cavity
09.09.09 1010
2" polystyrene insulation in cavity
.07.08.08 .08 .08
2" polyurethane insulation in cavity
.06.06 .06 .06.07