WAC 51-11C-610333. Section A103.3.3 — Double 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 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 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