Section 51-11C-40212 - Section C402.1.2-Equipment buildingsC402.1.2Equipment buildings. Buildings that comply with all of the following shall be exempt from the building thermal envelope provisions of this code: 1. Are separate buildings with floor area no more than 500 square feet (50 m2).2. Are intended to house electric equipment with installed equipment power totaling at least 7 watts per square foot (75 W/m2) and not intended for human occupancy.3. Are served by mechanical cooling and heating systems sized in accordance with Sections C403.1.2 and C403.3.1.4. Have a heating system capacity not greater than 17,000 Btu/hr (5 kW) and a heating thermostat set point that is restricted to not more than 50°F (10°C).5. Have an average wall and roof U-factor less than 0.200. EXCEPTION: | Where the cooling and heating system is a heat pump, the heating capacity is allowed to exceed 17,000 Btu/h provided the heat pump cooling efficiency is at least 15 percent better than the requirements in Tables C403.3.2(2) and C403.3.2(14). |
C402.1.2.1Standalone elevator hoistways. Elevator hoistways that comply with all of the following shall be exempt from the building thermal envelope and envelope air barrier provisions of this code:1. Are separate from any other conditioned spaces in the building (do not serve or open into any conditioned, semi-heated or indirectly conditioned space).2. Have heating and/or cooling equipment sized only to serve the expected elevator loads with thermostat setpoints restricted to heating to no higher than 40°F and cooling to no lower than 95°F.3. Have an area weighted average wall, roof and floor (where applicable) U-factor of less than or equal to 0.20. Calculations must include any floor-slab-edges that penetrate the hoistway and thus are considered part of the above-grade walls.Wash. Admin. Code § 51-11C-40212
Amended by WSR 16-03-072, Filed 1/19/2016, effective 7/1/2016Amended by WSR 19-24-040, Filed 11/26/2019, effective 7/1/2020Amended by WSR 22-14-091, Filed 7/1/2022, effective 7/1/2023Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-40212, filed 2/1/13, effective 7/1/13.