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Envelope Requirements Summary, Part 1 ENV-REQ <br /> 2015 Seattle Energy Code Compliance Forms for Commercial Buildings including R2,R3,&R4 over 3 stories and all R1 Revised Feb 2017 <br /> Minimum Requirements This table summarizes prescriptive compliance requirements for opaque elements and fenestration.Refer <br /> for Prescriptive Compliance to Tables C402.1.3,C402.1.4 and C402.4 in the 2015 Seattle Energy Code for important footnotes <br /> that apply to these tables. Refer to Section C402 for all applicable requirements that apply for each <br /> envelope element type and applicable exceptions. Refer to Section C410 for all applicable information for <br /> refrigerated spaces. <br /> Notes 1,7 Notes 1.2 <br /> Table C402.1.3 Table C402.IA <br /> Prescriptive Path Insulation Minimum R-Value Assembly Maximum U-factor <br /> Occupancy Group All Other Group R All Other Group R <br /> Opaque Elements <br /> Roofs <br /> Insulation Entirely above Deck R-38 c.i. R-38 c.i. U-0.027 U-0.027 <br /> Metal Building(with thermal spacer block)Note 3 R-25+R-22 Ls R-25+R-22 Ls U-0.027 U-0.027 <br /> Attic and Other R-49 R-49 U-0.02 I U-0.021 <br /> • <br /> Joist or single rafter R-49 R-49 U-0.027 U-0.027 <br /> Walls,Above-grade <br /> Exterior R-16 c.i.Note 6,or <br /> Mass Interior R-13+R6 c.i.wood stud,or U-0.057 U-0.057 <br /> Interior R-13+R-10 c.i.metal stud <br /> Mass transfer deck slab edge No R-Value for prescriptive compliance U-0.200 U-0.200 <br /> Metal Building R-19 c.i..or R-13+R-13 c.i. U-0.052 U-0.052 <br /> Steel Framed R-13+R-10c.i. R-19+R-8.5 c.i. U-0.055 U-0.055 <br /> Wood Framed and Other R-13+R-7.5 c.i. R-21 w/int.frame U-0.051 U-0.054 <br /> Exterior:R-10 c.i. <br /> Below Grade Wall Note 4 Interior:R-19 wood stud,or U-0.070 U-0.070 <br /> R-13+R-6 c.i.metal stud <br /> Floors <br /> Mass R-30 c.i. R-30 c.i. U-0.029 U-0.029 <br /> Steel Joist R-38+R-4 c.i. R-38+R-4 c.i. U-0.029 U-0.029 <br /> Wood Joist R-38 R-38 U-0.025 U-0.025 <br /> Slab-On-Grade Floors <br /> Unheated R-10 for 24 in.(from top of slab) F-0.54 F-0.54 <br /> Heated Note 5 R-10 perimeter&under entire slab F-0.55 F-0.55 <br /> Opaque Doors <br /> Swinging No R-Value for prescriptive compliance U-0.37 U-0.37 <br /> Nonswinging(Roll-up or sliding) R-4.75 R-4.75 U-0.34 U-0.34 <br /> Fenestration Assembly Maximum U-factor Notes 1,2 <br /> Table C402.4 0-30%of wall area,or <br /> Section C402.3.1.4 High Performance <br /> 30%-40%per Section C402.4.1.I,DLZ Fenestration Option-0.40%of wall'm•ea <br /> or Section C402.4.1.4 DOHS <br /> Column A Column B <br /> Electric Res.And Other Heating Fuel Other Heating Fuel Only rot`8 <br /> Fossil Fuel Note 8 <br /> Vertical Fenestration <br /> Nonmetal framing U-0.26 U-0.30 U-0.28 <br /> Metal framing(fixed) U-0.31 U-0.38 U-0.34 <br /> Metal framing(operable) U-0.38 U-0.40 U-0.36 <br /> Entrance doors U-0.60 U-0.60 U-0.60 <br /> Skylights <br /> Skylights U-0.50 U-0.50 U-0.50 <br /> Fenestration Assembly Maximum SIIGC Factor <br /> Vertical Fenestration PF<0.2:north-SHGC=0.53; <br /> all other SHGC=0.35 <br /> 0.2<_PF<0.5:north-SHGC-0.58; SHGC-0.35 <br /> all other-SHGC-0.45 <br /> PF 0.5:north-SHGC-0.64; <br /> all other-SHGC-0.60 <br /> Skylights SHGC-0.32 SHGC-0.35 <br /> C410.2 Refrigerated Spaces Insulation Insulation,Minimum R-Value Assembly Maximum U-factor <br /> Freezers-Walk-in and Warehouse <br /> Roof/Ceiling R-32 U-0.030 <br /> Wall R-32 U-0.030 <br /> Door R-32 U-0.030 <br /> Door-transparent reach-in triple-pane,heat-reflective treated or gas <br />