Wash. Admin. Code § 51-11C-40626 - Section C406.2-Envelope measures
C406.2.12
Enhanced 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.
C406.2.13
Reduced 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.
C406.2.13.1
Base reduced air leakage. Measured air leakage shall not exceed 68
percent of the maximum leakage allowed by Section C402.5.1.2.
C406.2.13.2
Enhanced reduced air
leakage. Measured air leakage shall not exceed 33 percent of the maximum
leakage allowed by Section C402.5.1.2.
Notes
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