Wash. Admin. Code § 51-11C-402142
Current through Register Vol. 25-01, January 1, 2025
Table C402.1.4.2 Effective R-values For Steel Stud Wall Assemblies
NOMINAL STUD DEPTH (inches) | SPACING OF FRAMING (inches) | CAVITY R-VALUE (insulation) | CORRECTION FACTOR (Fc) | EFFECTIVE R-VALUE (ER)(Cavity R-Value × Fc) |
3 1/2 | 16 | 13 | 0.46 | 5.98 |
15 | 0.43 | 6.45 | ||
3 1/2 | 24 | 13 | 0.55 | 7.15 |
15 | 0.52 | 7.80 | ||
6 | 16 | 19 | 0.37 | 7.03 |
21 | 0.35 | 7.35 | ||
6 | 24 | 19 | 0.45 | 8.55 |
21 | 0.43 | 9.03 | ||
8 | 16 | 25 | 0.31 | 7.75 |
24 | 25 | 0.38 | 9.50 |
Wash. Admin. Code § 51-11C-402142