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Washington Stc to Energy Code—Resiu&;tt)UT <br /> Prescriptho a Energy Code Compliance for All Climate Zones in Washington <br /> Single Family—New&Ar,ldi#ions(effective February 1,2021) <br /> Table 406.3—Energy Credits(Single Family) <br /> Option De{iicription Credits:SF <br /> 1. EFFICIENT BUILDING ENVELOPE OPTIONS <br /> Only one option from Items 1.:1.through 1.7 may be selected in this category. <br /> • _ Compliance with the conductive UA targets is demonstrated using Section R402.1.4,Total UA alternative;where(1- <br /> (Proposed UA/Target UA))>the required%UA reduction. <br /> Prescriptive compliance is based on Table R402.1.1 with the following modifications: <br /> Vertical fenestration U=0.24 0.5 <br /> Prescriptive compliance is based on Table R402.1.1 with the following modifications: <br /> 1 Vertical fenestration U=0.20 1.0 <br /> Prescriptive compliance is based on Table R402.1.1 with the following modifications: <br /> Vertical fenestration U=0.28 <br /> Floor R-38 <br /> Slab on grade R-10 perimeter and under entire slab below grade slat) R-10 perimeter and 0.5 <br /> under entire slab ar• <br /> Compliance based on Section R402.1.4: Reduce the Total conductive UA by 5% <br /> Prescriptive compliance is based on Table R402.1.1 with the following modifications: <br /> Vertical fenestration U=0.25 <br /> Wall R-21 plus R-4 ci <br /> Floor R-38 <br /> 14 Basement wall R-2:. int plus R-5 ci to <br /> Slab on grade R-10 perimeter and under entire slab Below grade slat:: 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 based 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 /> Wood frame wall R, 21 int plus R-12 ci Floor R-38 <br /> 1.!l Basement wall R-2::. int plus R-12 ci 2.0 <br /> Slab on grade R-10 perimeter and under entire slab Below grade slag:: R-10 perimeter and <br /> under entire slab or <br /> Compliance based on Section R402.1.4: 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=0.18 <br /> Ceiling and single-rafter or joist-vaulted R-60 advanced <br /> Wood frame wall R.•21 int plus R-16 ci <br /> Floor R-48 30 <br /> Basement wall R-2:. int plus R-16 ci <br /> Slab on grade R-20 perimeter and under entire slab Below grade slat: R-20 perimeter and <br /> under entire slab ad' <br /> Compliance based on Section R402.1.4: Reduce the Total conductive UA by 40%. <br /> Advanced framing and raised heel trusses or rafters <br /> Vertical Glazing U-I:I.28 <br /> 1 ;r R-49 Advanced(U-tl.020)as listed in Section A102.2.1,Ceilings below a vented attic and 0.5 <br /> R-49 vaulted ceilinl;s with full height of uncompressed insulation extending over the wall <br /> top plate at the eaYes. <br /> • Prescriptive Path—Single Family 2018 Washing on State Energy Code-R 4 <br />