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2018 WSEC Requirements for Commercial B gs including Group R2,R3&R4 over 3 stories&all R1 - dministered by©2021 NEEA,All rights reserved <br /> The following information is necessary to check a building permit application for compliance with the building envelope requirements in the Washington State <br /> Energy Code,Commercial Provisions. <br /> For questions about this report,contact WSEC Commercial Technical Support at 360-539-5300 or via email at com.techsupport@waenergycodes.com <br /> C103.2 Building enclosure air For commercial buildings,indicate that <br /> C402.5.1.2C leakage test building enclosure air leakage testing shall be • <br /> 402.5.1.2.1 performed per ASTM C779(or equivalent <br /> R402.4.1.2 method approved by the code official)and the <br /> target leakage rate is 0.25 cfm/ft2(1.5 <br /> L/s*m2)at 0.3 in.wg(75 Pa)4 <br /> t7103:2 Building enclosure air If the building is mixed residential t <br /> C402.5.1.2C leakage test -'commerccial and three stories or less above <br /> dt)2'.5.1 2.1 grade plane,indicate which 1>azalcling enclosure' <br /> ' PR402.4.1.2 air leakage test procedure will be used for the <br /> Group R-2 11 -3 areas(Section 1Z-102.4.1.2 or <br /> • C402.5.1.2t:if per 12402.4.1.2.'indicate that <br /> the target leakage rate is 5 air changes per <br /> hour at€ 2 in.wgt50 Pa)4 <br /> C1.03.2 Building enclosure air Include the following requirements in project <br /> • <br /> C402.5.1.2C leakage test documents:(1)Submit building enclosure air <br /> 402.5.1.2.1 leakage test reports to jurisdiction and owner; <br /> R402.4.1.2 (2)If initial test result exceeds 0.25 cfm/ft2 <br /> (1.5 L/s*m2),indicate that inspection and all <br /> practical corrective actions be completed and <br /> documented in the air leakage test report and <br /> the building shall be re-tested;(3)Indicate <br /> • <br /> that corrective measures and retesting must be <br /> repeated until the test result is 0.40 cfm/ft2 <br /> • (2.0 L/s*m2)or less;(4)Include air barrier <br /> test report in project close out documentation <br /> :provided to building owner.4 <br /> ADDITIONAL EFFICIENCY CREDITS-REDUCED AIR INFILTRATION <br /> (.`406.9 Reduced airTo comply with additional efl iciency credi€,• <br /> infiltration indicate in project documents that the <br /> '.building ettelosure air leakage test results shall . <br /> not exceed 0.17 cfntlf't2 at 0.3 izi.wg(75 Pa); <br /> all documentation requireniet,ts per Clt)3_2 <br /> • and C402.5.1.2 apply} <br /> ALTERATIONS <br /> ('S03 I Roof alteration- For a root'alteration where existing ceiling <br /> C503.3.1 , insulation cavities are exposed,indicate cavities are�- <br /> insulated i:o full depth at riiinintunt nominal <br /> value of R-3.0 per inch-1. <br /> C503.f Roof alteration- ;For a roof covering replacement where <br /> C503.3.1 insulation insulation is installed entirely above the roof <br /> deck,indicate insulation complies with <br /> requirements for new construction per Tables <br /> C402.1.3 or C402.1.44 <br /> C503.t Wall and floor For a wall or floor alteration(liwir over <br /> alteration-insulation ,outdoor or unconditioned space)where <br /> existing envelope cavities aie exposed, <br /> indicate cavities are insulated to full depth at <br /> ntininactras ntominal value of R-3.0 per inch4 <br /> �0 �� <br />