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PDFWAC 51-11C-402142

Table C402.1.4.1Effective R-values for steel stud wall assemblies.

Table C402.1.4.1
Effective R-values For Steel Stud Wall Assemblies
NOMINAL STUD DEPTH (inches)
SPACING OF FRAMING (inches)
CAVITYR-VALUE
(insulation)
CORRECTION FACTOR (Fc)
EFFECTIVE
R-VALUE (ER)
(Cavity R-Value x 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
[Statutory Authority: RCW 19.27A.025, 19.27A.160, and 19.27.074. WSR 16-03-072, § 51-11C-402142, filed 1/19/16, effective 7/1/16.]
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