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Permit#: B2406-018 <br /> Site Address: 5030 271hAve W, Everett, WA <br /> RE: First Building Permit Review Letter for B2406-018 <br /> Architectural <br /> 1. (IRC R317.1) Please provide pressure-treated wood or naturally durable wood at all exterior locations. <br /> 2. (IRC R317.1.1). Please show that all field cut ends, notches and drilled holes will be treated in the field per <br /> AWPA M4. <br /> I added notes about using pressure-treated wood. <br /> ALL THE FRAME ELEMENTS SHALL 5E PRESSURE-TREATED WOOD. <br /> FIELD-CUT ENDS, NOTCHES AND DRILLED HOLES OF PRESERVATIVE-TREATED <br /> WOOD SHALL 5E TREATED IN THE FIELD IN ACCORDANCE WITH AWPA M4. R311.1 <br /> 3. (IRC R507.6)The proposed 2x12 @ 16 inches o.c.does not meet the prescriptive span requirements per <br /> Table R507.6. <br /> Sizing of Structural Elements <br /> Maximum Deck Joist Span <br /> Joist Spacing b Joist Back Span <br /> Joist inches <br /> Size 12 1 16 1 24 4 1 6 1 8 1 10 1 12 1 14 1 16 1 18 <br /> Allowable Joist Span Maximum Cantilever(le inches)Adjacent Joist Span feet <br /> 2x6 7-11 7-1 5-9 1-0 1-6 NP E2-6 <br /> NP NP NP NP <br /> 2x8 10-5 9-5 7-8 1-0 1-6 2-0NP NP NP NP <br /> 2x10 13-3 11-6 9-5 1-0 1-6 2-02-8 NP NP NP <br /> 2x12 15-5 13-4 10-11 1-0 1-6 2-03-0 3-3 NP NP <br /> a.Includes Incising Factor. <br /> b.When using composite decking,refer to manufacturer's installation instructions for <br /> maximum spacing of joists. <br /> c.Spans based on Doug Fir-Larch,Hem Fir and Spruce-Pine-Fir,No.2 grade,wet service <br /> factor. <br /> Joist span accorded code table. <br /> 6X6 110911 ri r <br /> 13-4" <br /> 4. (IRC R507.5)The proposed 6x12 beam does not meet the prescriptive span requirements per Table <br /> 507.5. <br /> Minimum Beam Size <br /> Deck Joist Span feet <br /> 6 8 10 12 14 16 18 <br /> Beam Maximum Beam Span a.b•d(feet-inches) <br /> Size IAe <br /> 4x6 5-2 4-6 4-0 3-5 3-1 2-10 2-7 <br /> 4x8 6-11 6-0 5-3 4-7 4-1 3-8 3-5 <br /> 4x10 8-5 7-4 6-0 5-10 5-2 4-9 4-5 <br /> 4x12 9-10 8-6 7-7 6-11 6-4 5-9 54 <br /> 6x6 1 6-6 5-7 5-0 4-7 4-2 3-9 3-5 <br /> 6x8 8-8 7-6 6-8 6-1 5-6 5-0 4-7 <br /> 6x10 10-7 9-2 8-2 7-6 6-11 6-4 5-10 <br /> 6x12 1 12-4 10-8 9-7 8-9 8-1 7-7 7-1 <br /> a.Spans based on Doug Fir-Larch,Hem Fir and Spruce-Pine-Fir,No.2 grade,wet service <br /> factor. <br /> b.If 2x built up beams to make 4x or 6x beams,they shall be fastened with two rows of 10d <br /> (3-inch x 0.128-inch)nails minimum at 16 inches on center along each edge(507.5) <br /> C.Beam depth shall be equal to or greater than the depth of intersecting joist for a flush <br /> beam connection. <br /> d.Beam cantilevers are limited to the adjacent beam's span divided by 4. <br /> e.Includes incising factor. <br />