WAC 51-11-1005: Section 1005: Above-grade walls.

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WACs > Title 51 > Chapter 51-11 > Section 51-11-1005

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51-11-1004 << 51-11-1005 >> 51-11-1006

(Effective Until July 1, 2013.) WAC 51-11-1005	Agency filings affecting this section
Section 1005: Above-grade walls.

     Section 1005.1 General: Table 10-5, 10-5A and 10-5B list heat-loss coefficients for the opaque portion of above-grade wood stud frame walls, metal stud frame walls and concrete masonry walls (Btu/hft²°F) respectively. They are derived from procedures listed in RS-1, listed in Chapter 7. For intermediate floor slabs which penetrate the insulated wall, use the concrete wall U-factors in Table 10-5B.

     Insulation is assumed to uniformly fill the entire cavity and to be installed as per manufacturer's directions. All walls are assumed to be finished on the inside with one-half inch gypsum wallboard, and on the outside with either beveled wood siding over one-half inch plywood sheathing or with five-eighths inch T1-11 siding. Insulated sheathing (either interior or exterior) is assumed to cover the entire opaque wall surface.

     Metal building walls have a different construction and are addressed in Table 10-5A(3).

     1005.2 Framing Description: For wood stud frame walls, three framing types are considered, and defined as follows:

     Standard: Studs framed on sixteen inch centers with double top plate and single bottom plate. Corners use three studs and each opening is framed using two studs. Headers consist of double 2X or single 4X material with an air space left between the header and the exterior sheathing. Interior partition wall/exterior wall intersections use two studs in the exterior wall.

Framing weighting factors:	Studs and plates	.19
	Insulated cavity	.77
	Headers	.04

Intermediate: Studs framed on sixteen inch centers with double top plate and single bottom plate. Corners use two studs or other means of fully insulating corners, and each opening is framed by two studs. Headers consist of double 2X material with R-10 insulation between the header and exterior sheathing. Interior partition wall/exterior wall intersections are fully insulated in the exterior wall.

Framing weighting factors:	Studs and plates	.18
	Insulated cavity	.78
	Headers	.04

Advanced: Studs framed on twenty-four inch centers with double top plate and single bottom plate. Corners use two studs or other means of fully insulating corners, and one stud is used to support each header. Headers consist of double 2X material with R-10 insulation between the header and exterior sheathing. Interior partition wall/exterior wall intersections are fully insulated in the exterior wall.

Framing weighting factors:	Studs and plates	.13
	Insulated cavity	.83
	Headers	.04

     1005.3 Component Description: Default coefficients for the following types of walls are listed: Single-stud walls, strap walls, double-stud walls, log walls, stress-skin panels, metal stud walls, and metal building walls.

     Single-Stud Wall, Tables 10-5(1) through 10-5(8): Assumes either 2x4 or 2x6 studs framed on sixteen or twenty-four inch centers. Headers are solid for 2x4 walls and double 2x for 2x6 walls, with either dead-air or rigid-board insulation in the remaining space.

     Strap Wall, Table 10-5(9): Assumes 2x6 studs framed on sixteen or twenty-four inch centers. 2x3 or 2x4 strapping is run horizontally along the interior surface of the wall to provide additional space for insulation.

     Double-Stud Wall, Tables 10-5(10) and 10-5(11): Assumes an exterior structural wall and a separate interior, nonstructural wall. Insulation is placed in both wall cavities and in the space between the 2 walls. Stud spacing is assumed to be on 24 inch centers for both walls.

     Log Wall, Table 10-5(12).

     Stress-Skin Panel, Table 10-5(13).

     Metal Stud Wall, Overall Assembly U-Factors, Table 10-5A(1): Assumes metal studs spaced on 16- or 24-inch centers with insulation installed to fill wall cavities. Continuous rigid board insulation is applied without creating uninsulated voids in the wall assembly.

     Metal Stud Wall, Effective R-Values for Metal Framing and Cavity Only, Table 10-5A(2): These values may be used for the metal-framing/cavity layers in walls with metal studs spaced on 16- or 24-inch centers with insulation installed to fill wall cavities in lieu of using the zone method provided in Chapter 25 of Standard RS-1 listed in Chapter 7.

     Metal Building Wall, Table 10-5A(3): A wall whose structure consists of metal spanning panels supported by steel structural members (does not include spandrel glass or metal panels in curtain wall systems). The first nominal R-value is for insulation compressed between metal wall panels and the steel structure. For double-layer installations, the second rated R-value of insulation is for insulation installed from the inside, covering the girts. For continuous insulation (e.g., insulation boards) it is assumed that the insulation boards are installed on the inside of the girts and uninterrupted by the framing members. Insulation exposed to the conditioned space or semiheated space shall have a facing, and all insulation seams shall be continuously sealed to provide a continuous air barrier.

     Concrete and Masonry Walls, Table 10-5B(1).

     Peripheral Edges of Intermediate Concrete Floors, Table 10-5B(2).

TABLE 10-5

DEFAULT U-FACTORS FOR ABOVE-GRADE WALLS

TABLE 10-5(1)
2 x 4 Single Wood Stud: R-11 Batt
	Siding Material/Framing Type
		Lapped Wood		T1-11
	R-value of Foam Board	STD	ADV	STD	ADV
NOTE: Nominal Batt R-value: R-11 at 3.5 inch thickness Installed Batt R-value: R-11 in 3.5 inch cavity	0	0.088	0.084	0.094	0.090
	1	0.080	0.077	0.085	0.082
	2	0.074	0.071	0.078	0.075
	3	0.069	0.066	0.072	0.070
	4	0.064	0.062	0.067	0.065
	5	0.060	0.058	0.063	0.061
	6	0.056	0.055	0.059	0.057
	7	0.053	0.052	0.055	0.054
	8	0.051	0.049	0.052	0.051
	9	0.048	0.047	0.050	0.049
	10	0.046	0.045	0.047	0.046
	11	0.044	0.043	0.045	0.044
	12	0.042	0.041	0.043	0.042

TABLE 10-5(2)
2 x 4 Single Wood Stud: R-13 Batt
	Siding Material/Framing Type
		Lapped Wood		T1-11
	R-value of Foam Board	STD	ADV	STD	ADV
NOTE: Nominal Batt R-value: R-13 at 3.63 inch thickness Installed Batt R-value: R-12.7 in 3.5 inch cavity	0	0.082	0.078	0.088	0.083
	1	0.075	0.072	0.080	0.076
	2	0.069	0.066	0.073	0.070
	3	0.065	0.062	0.068	0.065
	4	0.060	0.058	0.063	0.061
	5	0.057	0.055	0.059	0.057
	6	0.053	0.052	0.056	0.054
	7	0.051	0.049	0.052	0.051
	8	0.048	0.047	0.050	0.048
	9	0.046	0.045	0.047	0.046
	10	0.044	0.043	0.045	0.044
	11	0.042	0.041	0.043	0.042
	12	0.040	0.039	0.041	0.040

TABLE 10-5(3)
2 x 4 Single Wood Stud: R-15 Batt
	Siding Material/Framing Type
		Lapped Wood		T1-11
	R-value of Foam Board	STD	ADV	STD	ADV
NOTE: Nominal Batt R-value: R-15 at 3.5 inch thickness Installed Batt R-value: R-15 in 3.5 inch cavity	0	0.076	0.071	0.081	0.075
	1	0.069	0.065	0.073	0.069
	2	0.064	0.061	0.068	0.069
	3	0.060	0.057	0.063	0.059
	4	0.056	0.053	0.059	0.056
	5	0.053	0.051	0.055	0.052
	6	0.050	0.048	0.052	0.050
	7	0.047	0.046	0.049	0.047
	8	0.045	0.044	0.047	0.045
	9	0.043	0.042	0.044	0.043
	10	0.041	0.040	0.042	0.041
	11	0.039	0.038	0.041	0.039
	12	0.038	0.037	0.039	0.038

TABLE 10-5(4)
2 x 6 Single Wood Stud: R-19 Batt
	Siding Material/Framing Type
		Lapped Wood			T1-11
	R-value of FoamBoard	STD	INT	ADV	STD	INT	ADV
NOTE: Nominal Batt R-value: R-19 at 6 inch thickness Installed Batt R-value: R-18 in 5.5 inch cavity	0	0.062	0.058	0.055	0.065	0.061	0.058
	1	0.058	0.055	0.052	0.060	0.057	0.055
	2	0.054	0.052	0.050	0.056	0.054	0.051
	3	0.051	0.049	0.047	0.053	0.051	0.049
	4	0.048	0.046	0.045	0.050	0.048	0.046
	5	0.046	0.044	0.043	0.048	0.046	0.044
	6	0.044	0.042	0.041	0.045	0.044	0.042
	7	0.042	0.040	0.039	0.043	0.042	0.040
	8	0.040	0.039	0.038	0.041	0.040	0.039
	9	0.038	0.037	0.035	0.039	0.038	0.037
	10	0.037	0.036	0.035	0.038	0.037	0.036
	11	0.036	0.035	0.034	0.036	0.035	0.035
	12	0.034	0.033	0.033	0.035	0.034	0.033

TABLE 10-5(5)
2 x 6 Single Wood Stud: R-21 Batt
	Siding Material/Framing Type
		Lapped Wood			T1-11
	R-value of FoamBoard	STD	INT	ADV	STD	INT	ADV
NOTE: Nominal Batt R-value: R-21 at 5.5 inch thickness Installed Batt R-value: R-21 in 5.5 inch cavity	0	0.057	0.054	0.051	0.060	0.056	0.053
	1	0.054	0.051	0.048	0.056	0.053	0.050
	2	0.050	0.048	0.045	0.052	0.050	0.047
	3	0.048	0.045	0.043	0.049	0.047	0.045
	4	0.045	0.043	0.041	0.047	0.045	0.043
	5	0.043	0.041	0.040	0.044	0.042	0.041
	6	0.041	0.039	0.038	0.042	0.041	0.039
	7	0.039	0.038	0.036	0.040	0.039	0.037
	8	0.038	0.036	0.035	0.039	0.037	0.036
	9	0.036	0.035	0.034	0.037	0.036	0.035
	10	0.035	0.034	0.033	0.036	0.035	0.033
	11	0.033	0.033	0.032	0.034	0.033	0.032
	12	0.032	0.031	0.031	0.033	0.032	0.031

TABLE 10-5(6)
2 x 6 Single Wood Stud: R-22 Batt
	Siding Material/Framing Type
		Lapped Wood			T1-11
	R-value of Foam Board	STD	INT	ADV	STD	INT	ADV
NOTE: Nominal Batt R-value: R-22 at 6.75 inch thickness Installed Batt R-value: R-20 in 5.5 inch cavity	0	0.059	0.055	0.052	0.062	0.058	0.054
	1	0.055	0.052	0.049	0.057	0.054	0.051
	2	0.052	0.049	0.047	0.054	0.051	0.048
	3	0.049	0.046	0.044	0.050	0.048	0.046
	4	0.046	0.044	0.042	0.048	0.046	0.044
	5	0.044	0.042	0.041	0.045	0.043	0.042
	6	0.042	0.040	0.039	0.043	0.042	0.040
	7	0.040	0.039	0.037	0.041	0.040	0.038
	8	0.038	0.037	0.036	0.039	0.038	0.037
	9	0.037	0.036	0.035	0.038	0.037	0.035
	10	0.035	0.034	0.033	0.036	0.035	0.034
	11	0.034	0.033	0.032	0.035	0.034	0.033
	12	0.033	0.032	0.031	0.034	0.033	0.032

TABLE 10-5(7)
2 x 6 Single Wood Stud: Two R-11 Batts
	Siding Material/Framing Type
		Lapped Wood			T1-11
	R-value of Foam Board	STD	INT	ADV	STD	INT	ADV
NOTE: Nominal Batt R-value: R-22 at 7 inch thickness Installed Batt R-value: R-18.9 in 5.5 inch cavity	0	0.060	0.057	0.054	0.063	0.059	0.056
	1	0.056	0.053	0.051	0.059	0.056	0.053
	2	0.053	0.050	0.048	0.055	0.052	0.050
	3	0.050	0.048	0.046	0.052	0.049	0.047
	4	0.047	0.045	0.044	0.049	0.047	0.045
	5	0.045	0.043	0.042	0.046	0.045	0.043
	6	0.043	0.041	0.040	0.044	0.043	0.041
	7	0.041	0.040	0.038	0.042	0.041	0.039
	8	0.039	0.038	0.037	0.040	0.039	0.038
	9	0.038	0.037	0.036	0.039	0.038	0.036
	10	0.036	0.035	0.034	0.037	0.036	0.035
	11	0.035	0.034	0.033	0.036	0.035	0.034
	12	0.034	0.033	0.032	0.034	0.034	0.033

TABLE 10-5(8)
2 x 8 Single Stud: R-25 Batt
	Siding Material/Framing Type
		Lapped Wood			T1-11
	R-value of Foam Board	STD	INT	ADV	STD	INT	ADV
NOTE: Nominal Batt R-value: R-25 at 8 inch thickness Installed Batt R-value: R-23.6 in 7.25 inch cavity	0	0.051	0.047	0.045	0.053	0.049	0.046
	1	0.048	0.045	0.043	0.049	0.046	0.044
	2	0.045	0.043	0.041	0.047	0.044	0.042
	3	0.043	0.041	0.039	0.044	0.042	0.040
	4	0.041	0.039	0.037	0.042	0.040	0.038
	5	0.039	0.037	0.036	0.040	0.038	0.037
	6	0.037	0.036	0.035	0.038	0.037	0.036
	7	0.036	0.035	0.033	0.037	0.035	0.034
	8	0.035	0.033	0.032	0.035	0.034	0.033
	9	0.033	0.032	0.031	0.034	0.033	0.032
	10	0.032	0.031	0.030	0.033	0.032	0.031
	11	0.031	0.030	0.029	0.032	0.031	0.030
	12	0.030	0.029	0.028	0.031	0.030	0.029

TABLE 10-5(9)

2 x 6: Strap Wall
	Siding Material/Frame Type
	Lapped Wood		T1-11
	STD	ADV	STD	ADV
R-19 R-11 Batts	0.036	0.035	0.038	0.036
R-19 R-8 Batts	0.041	0.039	0.042	0.040

TABLE 10-5(10)

2 x 6 2 x 4: Double Wood Stud

			Siding Material/Frame Type
Batt Configuration			Lapped Wood		T1-11
Exterior	Middle	Interior	STD	ADV	STD	ADV
R-19	------	R-11	0.040	0.037	0.041	0.038
R-19	------	R-19	0.034	0.031	0.035	0.032
R-19	R-8	R-11	0.029	0.028	0.031	0.029
R-19	R-11	R-11	0.027	0.026	0.028	0.027
R-19	R-11	R-19	0.024	0.023	0.025	0.023
R-19	R-19	R-19	0.021	0.020	0.021	0.020

TABLE 10-5(11)

2 x 4 2 x 4: Double Wood Stud
			Siding Material/Frame Type
Batt Configuration			Lapped Wood		T1-11
Exterior	Middle	Interior	STD	ADV	STD	ADV
R-11	--------	R-11	0.050	0.046	0.052	0.048
R-19	--------	R-11	0.039	0.037	0.043	0.039
R-11	R-8	R-11	0.037	0.035	0.036	0.036
R-11	R-11	R-11	0.032	0.031	0.033	0.032
R-13	R-13	R-13	0.029	0.028	0.029	0.028
R-11	R-19	R-11	0.026	0.026	0.027	0.026

TABLE 10-5(12)
Log Walls
	Average Log Diameter, Inches	U-factor
R-value of wood: R-1.25 per inch thickness Average wall thickness 90% average log diameter	6	0.148
	8	0.111
	10	0.089
	12	0.074
	14	0.063
	16	0.056

TABLE 10-5(13)
Stress Skin Panel
	Panel Thickness, Inches	U-factor
R-value of expanded polystyrene: R-3.85 per inch Framing: 6% Spline: 8%	3 1/2	0.071
	5 1/2	0.048
	7 1/4	0.037
	9 1/4	0.030
	11 1/4	0.025
No thermal bridging between interior and exterior splines

Metal Stud Walls: The nominal R-values in Table 10-5A may be used for purposes of calculating metal stud wall section U-factors in lieu of the ASHRAE zone calculation method as provided in Chapter 27 of Standard RS-1.

TABLE 10-5A

Default U-factors for Overall Assembly Metal Stud Walls, Effective R-values for Metal Framing and Cavity Only, and Default Metal Building U-factors

TABLE 10-5A(1)

OVERALL ASSEMBLY U-FACTORS FOR METAL STUD WALLS

	R-Value of
Metal	Continuous	Cavity Insulation
Framing	Foam Board
	Insulation	R-0	R-11	R-13	R-15	R-19	R-21
16" o.c.	R-0 (none)	U-0.352	U-0.132	U-0.124	U-0.118	U-0.109	U-0.106
	R-1	U-0.260	U-0.117	U-0.111	U-0.106	U-0.099	U-0.096
	R-2	U-0.207	U-0.105	U-0.100	U-0.096	U-0.090	U-0.087
	R-3	U-0.171	U-0.095	U-0.091	U-0.087	U-0.082	U-0.080
	R-4	U-0.146	U-0.087	U-0.083	U-0.080	U-0.076	U-0.074
	R-5	U-0.128	U-0.080	U-0.077	U-0.074	U-0.071	U-0.069
	R-6	U-0.113	U-0.074	U-0.071	U-0.069	U-0.066	U-0.065
	R-7	U-0.102	U-0.069	U-0.066	U-0.065	U-0.062	U-0.061
	R-8	U-0.092	U-0.064	U-0.062	U-0.061	U-0.058	U-0.057
	R-9	U-0.084	U-0.060	U-0.059	U-0.057	U-0.055	U-0.054
	R-10	U-0.078	U-0.057	U-0.055	U-0.054	U-0.052	U-0.051
	R-11	U-0.072	U-0.054	U-0.052	U-0.051	U-0.050	U-0.049
	R-12	U-0.067	U-0.051	U-0.050	U-0.049	U-0.047	U-0.047
	R-13	U-0.063	U-0.049	U-0.048	U-0.047	U-0.045	U-0.045
	R-14	U-0.059	U-0.046	U-0.045	U-0.045	U-0.043	U-0.043
	R-15	U-0.056	U-0.044	U-0.043	U-0.043	U-0.041	U-0.041
	R-20	U-0.044	U-0.036	U-0.036	U-0.035	U-0.034	U-0.034

24" o.c	R-0 (none)	U-0.338	U-0.116	U-0.108	U-0.102	U-0.094	U-0.090
	R-1	U-0.253	U-0.104	U-0.098	U-0.092	U-0.086	U-0.083
	R-2	U-0.202	U-0.094	U-0.089	U-0.084	U-0.079	U-0.077
	R-3	U-0.168	U-0.086	U-0.082	U-0.078	U-0.073	U-0.071
	R-4	U-0.144	U-0.079	U-0.075	U-0.072	U-0.068	U-0.066
	R-5	U-0.126	U-0.073	U-0.070	U-0.067	U-0.064	U-0.062
	R-6	U-0.112	U-0.068	U-0.066	U-0.063	U-0.060	U-0.059
	R-7	U-0.100	U-0.064	U-0.062	U-0.059	U-0.057	U-0.055
	R-8	U-0.091	U-0.060	U-0.058	U-0.056	U-0.054	U-0.052
	R-9	U-0.084	U-0.057	U-0.055	U-0.053	U-0.051	U-0.050
	R-10	U-0.077	U-0.054	U-0.052	U-0.050	U-0.048	U-0.048
	R-11	U-0.072	U-0.051	U-0.049	U-0.048	U-0.046	U-0.045
	R-12	U-0.067	U-0.048	U-0.047	U-0.046	U-0.044	U-0.043
	R-13	U-0.063	U-0.046	U-0.045	U-0.044	U-0.042	U-0.042
	R-14	U-0.059	U-0.044	U-0.043	U-0.042	U-0.041	U-0.040
	R-15	U-0.056	U-0.042	U-0.041	U-0.040	U-0.039	U-0.038
	R-20	U-0.044	U-0.035	U-0.034	U-0.034	U-0.033	U-0.032

Footnote:

Continuous foam board insulation: Continuous insulation assumes no thermal bridging of insulation by framing or z-furring through applied foam board. Zone calculation method as provided in RS-1 must be used for thermally bridged foam board insulation.

TABLE 10-5A(2)

EFFECTIVE R-VALUES FOR METAL FRAMING AND CAVITY ONLY

	Cavity		Insulation
	Nominal Depth, Inches	Actual Depth, Inches	Nominal R-Value	Effective R-Value
	Nominal Depth, Inches	Actual Depth, Inches	Nominal R-Value	16" O.C.	24" O.C.
Air Cavity	any	any	R-0.91 (air)	0.79	0.91
	4	3-1/2	R-11	5.5	6.6
	4	3-1/2	R-13	6.0	7.2
Wall	4	3-1/2	R-15	6.4	7.8
	6	5-1/2	R-19	7.1	8.6
	6	5-1/2	R-21	7.4	9.0
	8	7-1/4	R-25	7.8	9.6
Roof		Insulation is uncompressed	R-11	5.5	6.1
			R-19	7.0	9.1
			R-30	9.3	11.4

TABLE 10-5A(3)

DEFAULT METAL BUILDING WALL U-FACTORS

Insulation System	Rated R-Value of Insulation	Overall U-Factor for Entire Base Wall Assembly	Overall U-Factor for Assembly of Base Wall Plus Continuous Insulation (Uninterrupted by Framing)
Single Layer of Mineral Fiber			R-6.5	R-13	R-19.5	R-26	R-32.5	R-39
	None	1.180	0.136	0.072	0.049	0.037	0.030	0.025
	R-10	0.186	0.084	0.054	0.040	0.032	0.026	0.023
	R-11	0.185	0.084	0.054	0.040	0.032	0.026	0.023
	R-13	0.162	0.079	0.052	0.039	0.031	0.026	0.022
	R-16	0.155	0.077	0.051	0.039	0.031	0.026	0.022
	R-19	0.147	0.075	0.050	0.038	0.030	0.025	0.022

Concrete Masonry Walls: The nominal R-values in Table 10-5B may be used for purposes of calculating concrete masonry wall section U-factors in lieu of the ASHRAE isothermal planes calculation method as provided in Chapter 27 of Standard RS-1.

TABLE 10-5B(1)

Default U-Factors for Concrete and Masonry Walls

8" CONCRETE MASONRY
WALL DESCRIPTION	CORE TREATMENT
	Partial Grout with Ungrouted Cores			Solid Grout
	Empty	Loose-fill insulated
	Empty	Perlite	Vermiculite
Exposed Block, Both Sides	0.40	0.23	0.24	0.43
R-5 Interior Insulation, Wood Furring	0.14	0.11	0.12	0.15
R-6 Interior Insulation, Wood Furring	0.14	0.11	0.11	0.14
R-10.5 Interior Insulation, Wood Furring	0.11	0.09	0.09	0.11
R-8 Interior Insulation, Metal Clips	0.11	0.09	0.09	0.11
R-6 Exterior Insulation	0.12	0.10	0.10	0.12
R-10 Exterior Insulation	0.08	0.07	0.07	0.08
R-9.5 Rigid Polystyrene Integral Insulation, Two Webbed Block	0.11	0.09	0.09	0.12

12" CONCRETE MASONRY
	CORE TREATMENT
	Partial Grout with Ungrouted Cores			Solid Grout
	Empty	Loose-fill insulated
	Empty	Perlite	Vermiculite
Exposed Block, Both Sides	0.35	0.17	0.18	0.33
R-5 Interior Insulation, Wood Furring	0.14	0.10	0.10	0.13
R-6 Interior Insulation, Wood Furring	0.13	0.09	0.10	0.13
R-10.5 Interior Insulation, Wood Furring	0.11	0.08	0.08	0.10
R-8 Interior Insulation, Metal Clips	0.10	0.08	0.08	0.09
R-6 Exterior Insulation	0.11	0.09	0.09	0.11
R-10 Exterior Insulation	0.08	0.06	0.06	0.08
R-9.5 Rigid Polystyrene Integral Insulation, Two Webbed Block	0.11	0.08	0.09	0.12

8" CLAY BRICK
WALL DESCRIPTION	CORE TREATMENT
	Partial Grout with Ungrouted Cores			Solid Grout
	Empty	Loose-fill insulated
	Empty	Perlite	Vermiculite
Exposed Block, Both Sides	0.50	0.31	0.32	0.56
R-5 Interior Insulation, Wood Furring	0.15	0.13	0.13	0.16
R-6 Interior Insulation, Wood Furring	0.15	0.12	0.12	0.15
R-10.5 Interior Insulation, Wood Furring	0.12	0.10	0.10	0.12
R-8 Interior Insulation, Metal Clips	0.11	0.10	0.10	0.11
R-6 Exterior Insulation	0.12	0.11	0.11	0.13
R-10 Exterior Insulation	0.08	0.08	0.08	0.09

6" CONCRETE POURED OR PRECAST
WALL DESCRIPTION	CORE TREATMENT
	Partial Grout with Ungrouted Cores			Solid Grout
	Empty	Loose-fill insulated
	Empty	Perlite	Vermiculite
Exposed Concrete, Both Sides	NA	NA	NA	0.61
R-5 Interior Insulation, Wood Furring	NA	NA	NA	0.16
R-6 Interior Insulation, Wood Furring	NA	NA	NA	0.15
R-10.5 Interior Insulation, Wood Furring	NA	NA	NA	0.12
R-8 Interior Insulation, Metal Clips	NA	NA	NA	0.12
R-6 Exterior Insulation	NA	NA	NA	0.13
R-10 Exterior Insulation	NA	NA	NA	0.09

Notes for Default Table 10-5B(1)

1.	Grouted cores at 40" x 48" on center vertically and horizontally in partial grouted walls.
2.	Interior insulation values include 1/2" gypsum board on the inner surface.
3.	Furring and stud spacing is 16" on center. Insulation is assumed to fill furring space and is not compressed.
4.	Intermediate values may be interpolated using this table. Values not contained in this table may be computed using the procedures listed in Standard RS-1.

TABLE 10-5B(2)

Default U-Factors for Peripheral Edges of Intermediate Concrete Floors

	AVERAGE THICKNESS OF WALL ABOVE AND BELOW
SLAB EDGE TREATMENT	6 inches	8 inches	10 inches	12 inches
Exposed Concrete	0.816	0.741	0.678	0.625
R-5 Exterior Insulation	0.161	0.157	0.154	0.152
R-6 Exterior Insulation	0.138	0.136	0.134	0.132
R-7 Exterior Insulation	0.122	0.120	0.118	0.116
R-8 Exterior Insulation	0.108	0.107	0.106	0.104
R-9 Exterior Insulation	0.098	0.097	0.095	0.094
R-10 Exterior Insulation	0.089	0.088	0.087	0.086
R-11 Exterior Insulation	0.082	0.081	0.080	0.079
R-12 Exterior Insulation	0.076	0.075	0.074	0.074
R-13 Exterior Insulation	0.070	0.070	0.069	0.068
R-14 Exterior Insulation	0.066	0.065	0.065	0.064
R-15 Exterior Insulation	0.062	0.061	0.061	0.060

[Statutory Authority: RCW 19.27A.025, 19.27A.045. 10-03-115, 10-13-113 and 10-22-056, § 51-11-1005, filed 1/20/10, 6/21/10 and 10/28/10, effective 1/1/11. Statutory Authority: RCW 19.27A.022, 19.27A.025, 19.27A.045, and chapters 19.27 and 34.05 RCW. 07-01-089, § 51-11-1005, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27A.020, 19.27A.045. 04-01-106, § 51-11-1005, filed 12/17/03, effective 7/1/04. Statutory Authority: RCW 19.27A.025, 19.27A.045. 01-03-010, § 51-11-1005, filed 1/5/01, effective 7/1/01; 98-03-003, § 51-11-1005, filed 1/8/98, effective 7/1/98. Statutory Authority: RCW 19.27A.020 and 1990 c 2. 91-01-112, § 51-11-1005, filed 12/19/90, effective 7/1/91.]

Notes:

     Reviser's note:  Notice of Objection: The Joint Administrative Rules Review Committee (Committee) finds that, in adopting the 2009 proposed changes to the State Energy Code, Chapter 51-11 WAC, on November 20, 2009, the State Building Code Council (Council) failed to comply with all requirements of the law and failed to adequately respond to the Committee's request for additional economic impact and cost-benefit analyses prior to adoption.

     On October 1, 2009, the Committee found that the Small Business Economic Impact Statement (SBEIS) for the proposed changes filed with the Code Reviser failed to comply with all requirements of law. The Committee requested that the Council conduct a cost-benefit analysis pursuant to RCW 34.05.328 and amend the SBEIS to provide additional economic impact information, including an estimate of the number of jobs that would be created or lost as a result of compliance with all the proposed rules, as required by RCW 19.85.040 (2)(d).

     The Council provided the Committee with information and data on November 18, 2009. On December 2, 2009, the Committee found that the Council failed to adequately respond to the Committee's request for additional data. Specifically, the Committee found that the Council failed to amend the SBEIS to (a) estimate the number of jobs that would be created or lost as a result of compliance with the proposed changes; and (b) support the SBEIS with a detailed and rigorous costs analysis of the cumulative impact of all the changes. In addition, the Committee found that the Council failed to provide the Committee with a cost-benefit analysis of the proposed changes and pursuant to the requirements of RCW 34.05.328.

     The Committee strongly supports a process that makes thoughtful and informed progress towards changes that result in improved energy efficiency in our buildings, wherever practicable. While the Council worked diligently, it is the opinion of the Committee that the Council did not fully develop and consider the economic impacts and costs versus benefits of these significant changes to our Energy Code. Furthermore, it is the opinion of the Committee that the Council and the Legislature need this information to fully evaluate the value, impacts, and consequences of the proposed codes, with due diligence to their respective fiduciary responsibilities, in order to create the best informed public policy.

     As a result, the Committee recommends that the Governor suspend the adoption and implementation of the changes to the Energy Code, Chapter 51-11 WAC, adopted by the Council on November 20, 2009, until such time as a more adequate analysis has been completed and considered by the appropriate bodies.

     For all of the above stated reasons, the Committee objects to the changes to the State Energy Code, Chapter 51-11 WAC, that were adopted by the Council on November 20, 2009, and hereby directs the Code Reviser, pursuant to RCW 34.05.640(4), to publish this Notice of Objection in the Washington State Register and along with any publication in the Washington Administrative Code of changes to Chapter 51-11 WAC that were adopted by the Council in 2009 and filed with the Code Reviser.