Wash. Admin. Code § 51-11C-610333
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 |
Wash. Admin. Code § 51-11C-610333
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-610333, filed 2/1/13, effective 7/1/13.