Chapter 15.56
Energy Codes
Sections:
15.56.010 Northwest Energy Code adopted.
15.56.020 Conversion standard equivalent code amendments to Model Energy Code adopted.
15.56.030 Washington State Energy Code--Application.
15.56.010 Northwest Energy Code adopted.
The Northwest Energy Code, 1987 Edition, as promulgated by the Bonneville Power Administration is adopted and incorporated into and made a part of this chapter by reference. This code shall apply to all new residential construction electrical space heating and all new nonresidential construction using electrical space conditioning and electrical lighting; provided, that the ventilation requirements contained in Section 305 at the 1986 Washington State Energy Code (second edition) shall apply to commercial buildings. One copy of the Northwest Energy Code is on file in the office of the clerk-controller. (Ord. 1296 §1, 1990).
15.56.020 Conversion standard equivalent code amendments to Model Energy Code adopted.
The conversion standard equivalent code amendments to the Model Energy Code, December 24, 1986 Edition, promulgated by the Bonneville Power Administration and compiled with the Northwest Energy Code, 1987 Edition, as presently existing or as subsequently amended, are adopted and incorporated into and made a part of this chapter by reference. These conversion standards shall apply to any buildings constructed pursuant to a building permit issued on or after the effective date of this chapter, which at the time of initial construction were not required to comply with standards of the Northwest Energy Code as set forth in Section 15.56.010, when such buildings are subsequently converted to provide electrical space heating or conditioning. (Ord. 1296 §2, 1990).
15.56.030 Washington State Energy Code--Application.
The 1986 Washington State Energy Code (second edition) shall apply to all nonelectrical space heated residential and nonresidential construction except that new residential buildings, which are space-heated with all other forms of space heating not covered by the Northwest Energy Code, shall be designed to achieve energy use efficiency equivalent to energy use achieved in typical buildings constructed with:
(1) Ceilings insulated to a level of R-30 (R value includes insulation only);
(2) Walls insulated to a level of R-19 (R value includes insulation only), or constructed with two by four members, R-13 insulation batts, R-3.2 sheathing, and other normal assembly components;
(3) Below grade walls, insulated on the interior side, to a level of R-19 (R value includes insulation only), or if insulated on the exterior side, to a level of R-10;
(4) Floors over unheated space insulated to a level of R-19 (R value includes insulation only);
(5) Slab on grade floors insulated to a level of R-10 at the perimeter;
(6) Heat pumps with a minimum heating season performance factor (HSPF) of 6.8 or with all other energy sources with a minimum annual fuel utilization efficiency (AFUE) of seventy-eight percent;
(7) Double glazed window with values not more than U-0.65 when tested per AAMA standard #1503.1 - 88; and
(8) A maximum glazing area of twenty-one percent of the floor area or, for purposes of determining equivalent thermal performance, a maximum glazing area of fifteen percent of the floor area. (Ord. 1296 §3, 1990).
15.56.040 Effective date.
The regulations established by Sections 15.56.010 through 15.56.030 shall become effective as to any permit issued on or after June 1, 1990. (Ord. 1296 §4, 1990).