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PDFWAC 51-11C-40224

Section C402.2.4Below-grade walls.

C402.2.4 Below-grade walls. The R-value of the insulating material installed in, or continuously on, the below-grade walls shall be in accordance with Table C402.1.3. The U-factor or R-value required shall extend to the level of the lowest floor of the conditioned space enclosed by the below-grade wall.
[Statutory Authority: RCW 19.27A.020, 19.27A.025, 19.27A.160 and Chapter 19.27 RCW. WSR 19-24-040, § 51-11C-40224, filed 11/26/19, effective 7/1/20. Statutory Authority: RCW 19.27A.025, 19.27A.160, and 19.27.074. WSR 16-03-072, § 51-11C-40224, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-40224, filed 2/1/13, effective 7/1/13.]
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