Section 51-11C-40626 - Section C406.2-Envelope measuresC406.2.12Enhanced envelope performance. The Proposed Total UA of the thermal envelope of the project shall be 15 percent lower than the Allowable Total UA determined in accordance with Section C402.1.5 and Equation 4-2.C406.2.13Reduced air leakage. Energy credits shall be achieved where measured air leakage of the total conditioned floor area of the whole building, fully isolated building addition or tenant space is determined in accordance with Section C402.5.1.2 and complies with the maximum leakage in either Section C406.2.13.1 or C406.2.13.2.C406.2.13.1Base reduced air leakage. Measured air leakage shall not exceed 68 percent of the maximum leakage allowed by Section C402.5.1.2.C406.2.13.2Enhanced reduced air leakage. Measured air leakage shall not exceed 33 percent of the maximum leakage allowed by Section C402.5.1.2.Wash. Admin. Code § 51-11C-40626
Adopted by WSR 22-14-091, Filed 7/1/2022, effective 7/1/2023