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 framea | 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 C303.1.3(1)/R303.1.3(1) as appropriate |
Insulated steel slab with wood edge in wood framea | 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 C303.1.3(1)/R303.1.3(1) as appropriate |
Foam insulated steel slab with metal edge in steel frameb | 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 C303.1.3(1)/R303.1.3(1) as appropriate |
Cardboard honeycomb slab with metal edge in steel frameb | 0.61 | | | | |
Style and Rail Doors | | | | | |
| Sliding glass doors/French doors | | Use Table C303.1.3(1)/R303.1.3(1) as appropriate |
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) may also be used if applicable. |
| a Thermally broken sill (add 0.03 for nonthermally broken sill). |
| b Nonthermally broken sill. |
[Statutory Authority: RCW
19.27A.025,
19.27A.045,
19.27.020, and
19.27.074. WSR 14-24-122, § 51-11C-610711, filed 12/3/14, effective 1/3/15. Statutory Authority: RCW
19.27A.020,
19.27A.025 and chapters
19.27 and
34.05 RCW. WSR 13-04-056, § 51-11C-610711, filed 2/1/13, effective 7/1/13.]