Wash. Admin. Code § 51-11C-610714 - Table A107.1(4)-Default U-factors for steel garage and hangar doors

Table A107.1(4)

Default U-factors for Steel Garage and Hangar Doors

Double-skin Steel Garage and Aircraft Hangar Doors
One-piece tilt-upa	Sectional tilt-upb	Aircraft hangar
Insulatione	8 ft. x 7 ft.	16 ft. x 7 ft.	9 ft. x 7 ft.	72 ft. x 12 ft.c	240 ft. x 50 ft.d
1-3/8 in. thickness XPS, steel ribs EPS, steel ribs	0.36 0.33	0.33 0.31	0.34 - 0.39 0.31 - 0.36
2 in. thickness XPS, steel ribs EPS, steel ribs	0.31 0.29	0.28 0.26	0.29 - 0.33 0.27 - 0.31
3 in. thickness XPS, steel ribs EPS, steel ribs	0.26 0.24	0.23 0.21	0.25 - 0.28 0.24 - 0.27
4 in. thickness XPS, steel ribs EPS, steel ribs	0.23 0.21	0.20 0.19	0.23 - 0.25 0.21 - 0.24
6 in. thickness XPS, steel ribs EPS, steel ribs	0.20 0.19	0.16 0.15	0.20 - 0.21 0.19 - 0.21
4 in. thickness Noninsulated Expanded polystyrene Mineral wool, steel ribs Extruded polystyrene	1.10 0.25 0.25 0.23	1.23 0.16 0.16 0.15
6 in. thickness Noninsulated Expanded polystyrene Mineral wool, steel ribs Extruded polystyrene	1.10 0.21 0.23 0.20	1.23 0.13 0.13 0.12
Uninsulated All products	1.15

a Values are for thermally broken or thermally unbroken doors.

b Lower values are for thermally broken doors; upper values are for doors with no thermal break.

c Typical size for a small private airplane (single-engine or twin).

d Typical hangar door for a midsize commercial jet airliner.

e XPS is extruded polystyrene, EPS is expanded polystyrene.

Notes

Wash. Admin. Code § 51-11C-610714

Amended by WSR 14-24-122, Filed 12/3/2014, effective 1/3/2015

Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-610714, filed 2/1/13, effective 7/1/13.