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Trus Joist® TJI I-Joist


General Information

TJI® Framing Tips

Pro Rating for I-Joist

Using iLevel Products in Conventional Construction

Understanding and Preventing Floor Noises


Inventory Products

TJI® I-Joist MBS Inventory: It's all about beauty. Most products not kept in inventory can be special ordered, and delivered within a 48-hour turnaround time.

MBS Inventory Hangers: Most products not kept in inventory can be special ordered, and delivered within a 48-hour turnaround time.


Catalogs, Manuals and References

TJI®-Joist 4000 Specifier's Guide: This is the complete Specifier’s Guide for I-Level’s TJI®-Joists.

Simpson Strong-Tie® 2009-2010 Catalog: This is the full-line catalog for Simpson Strong-Tie® connectors.

Installation of EWP Connectors

Structural Framer’s Pocket Guide (English)

Structural Framer’s Pocket Guide (Spanish)


General Technical Information

Connections for Side-Loaded Beams

Connection information for side-loaded beams with concentrated loads.

Column Caps/Bases, Holdowns,and Straps

Information for designing and specifying column caps/bases, hold downs, and straps for SCL, fastened into the narrow face of SCL.

Frequently Asked Questions (FAQ) About Mold

Provides homeowners and builders with answers to common questions about mold.


Quick References

I-Joist Design Properties

Floor Span Tables and Material Weights

TJI® I-Joist Floor Details

Rim Board Selection and Installation

Allowable Holes in TJI® Joist

Guidelines for Holes in 1¼", 1½" and 1¾"

TimberStrand® LSL Rim Board and TJI®

Rim Joists


Technical Bulletins

TJI® Joist

TJI® Joist Repair Details for Holes

Repair detail and maximum span table for TJI joists with holes too close to bearing.

Residential Bonus Room Table

Span and other information for TJI Joists used in bonus rooms with Roof Live Load of 20 psf at 115%.

Selection of I-joist and lumber (SCL) hangers.

Technical information on hangers used with TJI joists and SCL.

Guidelines for Holes in TJI® Rim Joists

Covers placement of holes in TJI Rim Joists that are continuously supported along the top and bottom.

TJI® Joists Header-Off Table

Technical information on how to repair a damaged TJI joist by headering-off to an adjacent joist.

Guidelines for Allowable Oval Holes in TJI® Joists

How to properly size oval holes in TJI joists used in residential applications.

Trus Joist® TJI® Joist Rafter Cut Detail

Allowable Reactions for fire-cut (slope cut) at the ends of the joist to match rafter slope.


TimberStrand® LSL Rim Board

1¼" 1.3E  LSL Rim Board Header over short  spans

Tables and technical information for specifying TimberStrand LSL rim board as headers over short openings.

LSL 1⅛" Rim Board  Deck Ledger Attachment

Explains how to specify the proper fastener for deck ledger attachment.




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