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4. <br /> 2018 Washington State Energy Code—Reside r!tiol <br /> Prescriptive Energy Code Compliance for All Climate Zones in Washington <br /> Single Family—New&Adcl'iticrr►s{effective February 11,20211 <br /> 'These requirements apply to all IRC building tyl:res„ including detached one- and two-family <br /> dwellings and multiple single-famihir dwellings(townhou,51es). <br /> _ Project in farrr ai io Contact info rrnation <br /> Sun -Lee <br /> •_-®...mu..inm.i.I.W ['XYC:1:1 T::II^'�-'••.-"C 0.•••=1ILIC= Q[tl ====='_'^==S.192171 <br /> Instructions:Thi'; single-family project will use the requirements of the Prescriptive Path below and <br /> incorporate the roinimum values listed.. Based on the size of the structure,the appropriate number curl' <br /> additional credits are checked as chosen by the permlt applicant. <br /> Provide all information from the following tables as building permit drawings:Table R402.1-Insulation and <br /> Fenestration Requirements by Compoierit,Table R406.2-Fuel Normalization Credits and 406.3- Energy Credits. <br /> Author°r-,red Representative L Dote C <br /> All Climate Zones(Table lir102.1.1) -- _ <br /> R-Value a -------- tJ-Factor'—_—_-----_ -- <br /> .-. - <br /> Fenestration U-Factor b n/a � 0.30 <br /> Skylight U-Factor t n/a 0.50 <br /> Glazed Fenestration SHGC b,e n/a n/a <br /> Ceiling a 49 i 0.026 <br /> Wood Frame Wall wh 21 pint 0.056 <br /> Floor 30 0.029 <br /> Below Grade Wall`,h 10/15/21 int+TB 0.042 <br /> Slab d'f R-value St Depth 1.0,2 ft n/a <br /> R-values are minimums.. U-factors and SHGC are maximu-ns.When insulation is insta led in a cavity that is less <br /> a than the label or design thickness of the insulation,the compressed R-value of the insulation from Appendix <br /> Table A101.4 shall not be less than the R-value specified in the:able. <br /> b The fenestration U-factor column excludes skylights. <br /> •"10/15/21-i•5TB"means R-10 continuous insulation an the exterior of the wall, or R-1.5 continuous insulation on <br /> the interior of the wall,or R-21 cavity insulation plus a thermal break between the slab and the basement wall at <br /> c the interior of the basement wall.. "10/15/21+5T8"shall be permitted to be met with R-13 cavity insulation on <br /> the interior of the basement wall plus -5 continuous insulation on the interior or exterior of the wall. "5TB" <br /> means R-5 thermal break between floor slab and basement gall. <br /> d R-1C continuous insulation is required under heated slab on grade floors.See Sectior R402.2.9.1. <br /> For single rafter-or joist-vaulted ce lings,the insulation may be reduced to R-38 if the full insulation depth <br /> e extends over the top plate of the exterior wall. <br /> R-7..5 contiruous insulation installed over an existing slab is deemed to be equivalent to the required perimeter <br /> f slab insulation when applied to existing slabs comp''ying with Section R503.1,1. If foam plastic is used; it shall <br /> meet the requirements for thermal barriers protecting foam plastics. <br /> For log structures developed in compliance with Standard ICC:400,log walls shall meet the requirements for <br /> g climate zone 5 of ICC 400. <br /> Int.(intermediate framing)denotes framing and insulation as described in Section A1013.2.2 including standard <br /> h frarning;16 inches on center, 78%of the wall cavity insulated,and headers insulated w'tr a minimum R-:L0 <br /> • insulation. <br /> Prescriptive Path•-Single Family 2018 Washington State E rergy Code-R <br />