Trus Joist Framers Handbook.pdf

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SILENT FLOOR ® JOIST FRAMING 3 Silent Floor ® joist framing does not require bridging or mid-span blocking End of joists at centerline of support Protect untreated wood from direct contact with concrete Use only engineered lumber for rim board or blocking. 1 1 ⁄2" knockouts at approximately 12" on-center Bearing plate to be flush with inside face of wall or beam See Filler and Backer Blocks on page 5 See Allowable Holes on page 1 Blocking panel Safety bracing (1x4 minimum) at 8' on-center (6' on-center for TJI ® 110 joists) and extended to a braced end wall. Fasten at each joist with two 8d (2 1 ⁄2") nails minimum (see Warning on cover). E2 Rim board joint A1 between joists TJI ® rim joist 1 1 ⁄4" A3_ TimberStrand ® LSL or iLevel ® 1 1 ⁄8" CS rim board A2 L3 B1 L5 B2 H1 L1 B3 L4 P H1 B4 H2 Use B1 or B2 at intermediate bearings with load bearing or shear wall from above H3 Structural sheathing E1 LA See Exterior Deck Attachment on page 4 WARNING <strong>Joist</strong>s are unstable until laterally braced. See Warning on cover. INSTALLATION TIPS ■ Subfloor adhesive will improve floor performance, but may not be required. ■ Squash blocks and blocking panels carry stacked vertical loads (details B1 and B2). Packing out the web of a TJI ® joist (with web stiffeners) is not a substitute for squash blocks or blocking panels. Shifted joist Plumbing drop Additional joist ■ When joists are doubled at non-load bearing parallel partitions, space joists apart the width of the wall for plumbing or HVAC. ■ Additional joist at plumbing drop (see detail above).
End bearings (see page 4) A1 A2 A3 with blocking panels with TJI ® rim joist with rim board Intermediate bearings* (see page 5) B1 B2 B3 with blocking panels to support load bearing wall above with squash blocks to support load bearing wall above without blocking panels or squash blocks (no wall above) Cantilever details (see page 5) E1 E1W E2 E3 E4 F1 PB1 no reinforcement no reinforcement, with web stiffener 3 ⁄4" reinforcement on one side 3 ⁄4" reinforcement both sides joist reinforcement deck cantilever permanent bracing Guidelines for Closest On-Center Spacing per Row DETAIL SCHEDULE Cantilever over brick ledge (see page 5) 3 ⁄4" reinforcement on one side, with vertical blocking 3 ⁄4" reinforcement both sides, with vertical blocking 3 ⁄4" reinforcement on one side, with horizontal blocking 3 ⁄4" reinforcement on both sides, with horizontal blocking Hanger details (more connector information on page 8) TJI ® joist to beam (see page 8) TJI ® joist to joist (see page 5) TJI ® joist on masonry wall or steel beam (see page 8) Other details B4 butting joists with blocking panels (see above) CS column support (see page 4) LA exterior deck attachment (see page 4) W web stiffeners (see page 6) L beam details (see page 9) P column details (see page 9) *Load bearing wall must stack over wall below. Blocking panels may be required at shear walls above or below. iLevel ® TJ-Xpert ® SOFTWARE FRAMING PLANS B_W Web stiffeners required on each side of joist at intermediate bearings. Refer to your TJ-Xpert ® framing plan. Bearing requirements as shown on the TJ-Xpert ® framing plan are job-specific and supersede minimum bearing requirements listed. FASTENING OF FLOOR PANELS Nail Size 110, 210, and 230 TJI ®(1) Rim board 1 1 ⁄2" 360 and iLevel ® 1 1 ⁄4" 560 1 1 ⁄8" TimberStrand ® LSL TimberStrand ® LSL or wider Microllam ® LVL 8d (0.131" x 2 1 ⁄2") common 4" 3" 6" 4" 3" 3" 3" 10d (0.148" x 3"), 12d (0.148" x 3 1 ⁄4") common 4" 4" 6" 4" 4" 4" 4" 16d (0.162" x 3 1 ⁄2") common 6" 6" 16" 6" (2) 6" (2) 8" 6" Parallam ® PSL (1) One row of fasteners permitted (two at abutting panel edges) for diaphragms. Stagger nails when using 4" on-center spacing and maintain 3 ⁄8" joist and panel edge distance. For other applications, multiple rows of fasteners are permitted if the rows are offset at least 1 ⁄2" and staggered. (2) Can be reduced to 4" on-center with maximum nail penetration of 1 3 ⁄8" into the narrow edge. E5 E6 E7 E8 H1 H2 H3 ■ Recommended nailing is 12" on-center in field and 6" on-center along panel edge. Fastening requirements on engineered drawings supersede recommendations listed above. ■ iLevel recommends using a non-polyurethane subfloor adhesive on all contact points between panels and floor framing. ■ Nailing rows must be offset at least 1 ⁄2" and staggered. ■ 14 ga. staples may be substituted for 8d (2 1 ⁄2") nails if minimum penetration of 1" into the TJI ® joist or rim board is achieved. ■ Maximum spacing of nails is 18" on-center for TJI ® joists.
Page 1 and 2: Trus Joist ® TJI ® 110 TJI ® 210
Page 3 and 4: Table A—End Support Minimum dista
Page 5: TJI ® JOIST NAILING REQUIREMENTS A
Page 9 and 10: FLOOR DETAILS Blocking panel TJI ®
Page 11 and 12: WEB STIFFENERS—FLOOR AND ROOF APP
Page 13 and 14: ROOF DETAILS 7 Shear blocking— 1
Page 15 and 16: FRAMING CONNECTORS 8 APPROVED HANGE
Page 17 and 18: BEAM AND COLUMN DETAILS 9 DETAIL SC
Page 19: OUR GUARANTEE Product Warranty iLev

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