Wall construction details

From ASHRAE (1989), with permission

Click here to see definitions of layer codes and thermal properties

Wall description

Group Number

Description of construction Weight,
lb/ft2
U value,
Btu/h·ft2·°F
Code numbers for layers
4-in face brick + brick

C

Airspace + 4-in face brick

83

0.358

A0 A2 B1 A2 E0

D

4-in common brick

90

0.415

A0 A2 C4 E1 E0

C

1-in insulation or airspace + 4-in common brick

90

0.174-0.301

A0 A2 C4 B1/B2 E1 E0

B

2-in insulation + 4-in common brick

88

0.111

A0 A2 B3 C4 E1 E0

B

8-in common brick

130

0.302

A0 A2 C9 E1 E0

A

Insulation or airspace + 8-in common brick

130

0.154-0.243

A0 A2 C9 B1/B2 E1 E0

4-in face brick + (lightweight or heavyweight concrete block)

E

4-in block

62

0.319

A0 A2 C2 E1 E0

D

Airspace or insulation + 4-in block

62

0.153-0.246

A0 A2 C2 B1/B2 E1 E0

D

8-in block

70

0.274

A0 A2 C7 A6 E0

C

Airspace or 1-in insulation + 6-in or 8-in block

73-89

0.221-0.275

A0 A2 B1 C7/C8 E1 E0

B

2-in Insulation + 8-in block

89

0.096-0.107

A0 A2 B3 C7/C8 E1 E0

Heavyweight concrete wall + (finish)

E

4-in concrete

63

0.585

A0 A1 C5 E1 E0

D

4-in concrete + 1-in or 2-in insulation

63

0.119-0.200

A0 A1 C5 B2/B3 E1 E0

C

2-in insulation + 4-in concrete

63

0.119

A0 A1 B6 C5 E1 E0

C

8-in concrete

109

0.49

A0 A1 C10 E1 E0

B

8-in concrete + 1-in or 2-in insulation

110

0.115-0.187

A0 A1 C10 B5/B6 E1 E0

A

2-in insulation + 8-in concrete

110

0.115

A0 A1 B3 C10 E1 E0

B

12-in concrete

156

0.421

A0 A1 C11 E1 E0

A

12-in concrete + insulation

156

0.113

A0 C11 B6 A6 E0

Metal curtain wall

G

With/without airspace + 1-in/2-in/3-in insulation

5-6

0.091-0.230

A0 A3 B5/B6/B12 A3 E0

Frame wall

G

1-in to 3-in insulation

16

0.081-0.178

A0 A1 B1 B2/B3/B4 E1 E0