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2018 6ashington State Energy Code—Residential <br /> Prescriptive Energy Code Compliance for All climate Zones in Washington <br /> Single Family--New&Additions(effective February 1,2021) <br /> Table 406.3—Energy Credits(Single Family) <br /> Option Description _ Credits:SF <br /> 1.EFFICIENT BUILDING ENVELOPE OPTIONS; <br /> Only one optioi from Items 1.1 through 1.7 may be selected in t1is category. <br /> Compliance with the conductive UA targets is demonstrated using Suction R402.1.4,Tota UA alternative,where [:t- <br /> (Proposed UA/rarget UA)]>the required%UA reduction. <br /> 1.1 Prescriptive compliance is bisect on Table R402.1.1 with'the following modifications: 0.5 <br /> Vertical fenestration U=0.24 _ <br /> 12 Prescriptive compliance is basec on Table R402.1.1 with the following modifications: 1.0 <br /> Vertical fenestration U=0.:!O_ <br /> Prescriptive compliance is basec on Table R402.1.1 with the following modifications: <br /> Vertical fenestration U=0.28 <br /> Flog R-38 <br /> 1.3 Slab on grade R-10 perimeter and under entire slab below grade slab R-10 pe imeter and 0.5 <br /> under entire slab or <br /> Compliance based on Section R402.1.4: Reduce the Total conductive UA by 5% _ <br /> Prescriptive compliance is basec on Table R402.1.1 vrith-the following modifications: <br /> Vertical fenestration U=0.25 <br /> Wall R-21 plus R-4 ci <br /> Flo:)r R-38 <br /> 1.4 Basement wall R-21 int plus R-5 ci 1.0 <br /> Slab on grade R-10 perimeter and under entire slab below grade slab R-10 perimeter and <br /> under entire slab or <br /> Compliance based on Section R402.1.4:Reduce the Total conductive UA by 15% <br /> Prescriptive compliance is basec on Table R402.1.1 with the following modifications: <br /> Vertical fenestration U=0.22 <br /> Ceiling and single-rafter or joist-vaulted R-49 advanced <br /> Wcod frame wall R-21 int plus R-12 ci Floor R-38 <br /> 1.5 Basement wall R-21 int plus R-12 ci 2.0 <br /> Slab on grade R-10 perimeter and under entire slab below grade slab R-10 perimeter and <br /> under Entire slab or <br /> Compliance based on Section R4.02.1.4:Reduce the Total conductive UA by 30% <br /> Prescriptive compliance is based on Table R402.1.1 with the following modifications: <br /> Vertical fenestration U=OAS <br /> Ceiling and single-rafter or joist-vaulted R-60 advancad <br /> Wcod frame wall R-21 int plus R-16 ci <br /> 1.6 Flo:)r R-48 3.0 <br /> Basement wall R-21 int plus R-16 ci <br /> Slab on grade R-20 perimeter and under entire slab Below grade slab R-20 perimeter and <br /> under entire slab or <br /> Compliance based on Section R4.02.1.4:Reduce the Total conductive UA by 40%. _ <br /> Advanced framing and raised heel trusses or rafters <br /> Vertical Glazing U-0.28 <br /> 1.7 R-49 Advanced(U-0.020)as listed in Section A102.2.L, Ceilings below a vented attic and 0.5 <br /> R-49 vaulted ceilings with full height of uncompressed insulation extending over the wall <br /> top plate at the eaves. —� <br /> Prescriptive Path -Single Family 2 D1 8 Washington State Energy Code-R 4 <br />