Wash. Admin. Code § 51-11R-30312

Current through Register Vol. 24-21, November 1, 2024

Section 51-11R-30312 - Table R303.1.3(2)-Default opaque door U-factors

TABLE R303.1.3(2) DEFAULT OPAQUE DOOR U-FACTORS

Door Type	No Glazed Fenestration	Single Glazing	Double Glazing with 1/4 in. Airspace	Double Glazing with 1/2 in. Airspace	Double Glazing with e = 0.10, 1/2 in. Argon
SWINGING DOORS (Rough opening - 38 in. x 82 in.)
Slab Doors
Wood slab in wood frame^a	0.46
6% glazed fenestration (22 in. x 8 in. lite)	-	0.48	0.47	0.46	0.44
25% glazed fenestration (22 in. x 36 in. lite)	-	0.58	0.48	0.46	0.42
45% glazed fenestration (22 in. x 64 in. lite)	-	0.69	0.49	0.46	0.39
More than 50% glazed fenestration	Use Table R303.1.3(1)
Insulated steel slab with wood edge in wood frame^a	0.16
6% glazed fenestration (22 in. x 8 in. lite)	-	0.21	0.20	0.19	0.18
25% glazed fenestration (22 in. x 36 in. lite)	-	0.39	0.28	0.26	0.23
45% glazed fenestration (22 in. x 64 in. lite)	-	0.58	0.38	0.35	0.26
More than 50% glazed fenestration	Use Table R303.1.3(1)
Foam insulated steel slab with metal edge in steel frame^b	0.37
6% glazed fenestration (22 in. x 8 in. lite)	-	0.44	0.42	0.41	0.39
25% glazed fenestration (22 in. x 36 in. lite)	-	0.55	0.50	0.48	0.44
45% glazed fenestration (22 in. x 64 in. lite)	-	0.71	0.59	0.56	0.48
More than 50% glazed fenestration	Use Table R303.1.3(1)
Cardboard honeycomb slab with metal edge in steel frame^b	0.61
Style and Rail Doors
Sliding glass doors/French doors	Use Table R303.1.3(1)
Site-Assembled Style and Rail Doors
Aluminum in aluminum frame	-	1.32	0.99	0.93	0.79
Aluminum in aluminum frame with thermal break	-	1.13	0.80	0.74	0.63

Note:

Appendix A Tables A107.1(2) through A107.1(4) of chapter 51-11C WAC may also be used if applicable.

^a Thermally broken sill (add 0.03 for nonthermally broken sill).

^b Nonthermally broken sill.

Wash. Admin. Code § 51-11R-30312

Amended by WSR 14-24-123, Filed 12/3/2014, effective 1/3/2015

Amended by WSR 20-01-047, Filed 12/9/2019, effective 7/1/2020

Amended by WSR 24-03-084, Filed 1/16/2024, effective 3/15/2024

Statutory Authority: RCW 19.27A.020, 19.27A.045 and chapters 19.27 and 34.05 RCW. 13-04-055, § 51-11R-30312, filed 2/1/13, effective 7/1/13.