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2018 Washington State Energy Code — Residential <br />Prescriptive Energy Code Compliance for All Climate Zones in Washington <br />Sinale Familv — New & Additions (effective February 1. 2021) Version 1.1 <br />These requirements apply to all IRC building types, including detached one- and two-family <br />dwellings and multiple"single-family dwellings (townhouses). <br />Project Information Contact Information <br />Instructions: This single-family project will use the requirements of the Prescriptive Path below and <br />incorporate the minimum values listed. Based on the size of the structure, the appropriate number of <br />additional credits are checked as chosen by the permit applicant. <br />Provide all information from the following tables as building permit drawings: Table R402.1- Insulation and <br />Fenestration Requirements by Component, Table R406.2 - Fuel Normalization Credits and 406.3 - Energy Credits. <br />Authorized Representative Date <br />All Climate Zones Table R402.1.1 <br />R-Value a <br />_ <br />U-Factor a <br />Fenestration U-Factor b <br />_ <br />n/a <br />_ _ <br />0.30 <br />Skylight U-Factor b <br />n/a <br />0.50 <br />Glazed Fenestration SHGC b,e <br />n/a <br />n/a <br />Ceiling 2 <br />49 <br />0.026 <br />Wood Frame Wall g•h <br />21 int <br />0.056 <br />Floor <br />30 <br />0.029 <br />Below Grade Wall `•h <br />10/15/21 int+TB <br />0.042 <br />Slab d. R-Value & Depth <br />_ <br />10, 2 ft <br />— n/a <br />R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity that is less <br />a <br />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 table. <br />b <br />The fenestration U-factor column excludes skylights. <br />_ <br />"10/15/21 +5TB" means R-10 continuous insulation on the exterior of the wall, or R-15 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 <br />the interior of the basement wall. "10/15/21 +5TB" shall be permitted to be met with R-13 cavity insulation on <br />the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall. "5TB" <br />means R-5 thermal break between floor slab and basement wall. <br />d <br />_ <br />R-10 continuous insulation is required under heated slab on grade floors. See Section R402.2.9.1. <br />For single rafter- orjoist-vaulted ceilings, the insulation may be reduced to R-38 ifthe full insulation depth <br />e <br />extends over the top plate of the exterior wall. <br />_ <br />R-7.5 continuous insulation installed over an existing slab is deemed to be equivalent to the required perimeter <br />f <br />slab insulation when applied to existing slabs complying 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 [CC 400, log walls shall meet the requirements for <br />g <br />climate zone 5 of ICC 400. <br />_ <br />Int. (intermediate framing) denotes framing and insulation as described in Section A103.2.2 including standard <br />h <br />framing 16 inches on center, 78% of the wall cavity insulated and headers insulated with a minimum of R-10 <br />insulation. <br />U <br />OCT 17 202?�' <br />Prescriptive Path — Single Family 2018 Washington State Auneray Cod -R 1 I n <br />CITY EVE RETT yv'l <br />Permit Servicc�s <br />