PDFWAC 51-11C-610333

Section A103.3.3Double stud wall.

A103.3.3 Double stud wall. Tables A103.3.3(1) and A103.3.3(2): Assumes an exterior structural wall and a separate interior, nonstructural wall. Insulation is placed in both wall cavities and in the space between the two walls. Stud spacing is assumed to be on 24 inch centers for both walls.
Table A103.3.3(1)
2 x 6 + 2 x 4: Double Wood Stud
 
Siding Material/Frame Type
Batt Configuration
Lapped Wood
T1-11
Exterior
Middle
Interior
STD
ADV
STD
ADV
R-19
———
R-11
0.040
0.037
0.041
0.038
R-19
———
R-19
0.034
0.031
0.035
0.032
R-19
R-8
R-11
0.029
0.028
0.031
0.029
R-19
R-11
R-11
0.027
0.026
0.028
0.027
R-19
R-11
R-19
0.024
0.023
0.025
0.023
R-19
R-19
R-19
0.021
0.020
0.021
0.020
Table A103.3.3(2)
2 x 4 + 2 x 4: Double Wood Stud
 
Siding Material/Frame Type
Batt Configuration
Lapped Wood
T1-11
Exterior
Middle
Interior
STD
ADV
STD
ADV
R-11
————
R-11
0.050
0.046
0.052
0.048
R-19
————
R-11
0.039
0.037
0.043
0.039
R-11
R-8
R-11
0.037
0.035
0.036
0.036
R-11
R-11
R-11
0.032
0.031
0.033
0.032
R-13
R-13
R-13
0.029
0.028
0.029
0.028
R-11
R-19
R-11
0.026
0.026
0.027
0.026
[Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-610333, filed 2/1/13, effective 7/1/13.]