Description: Featuring Trus Joist® TJI® Joists for Floor and Roof Applications. Document ID #: tj-4000. File Type: pdf. File Size: 5.2 MB. File Date: November 2024. Document Types: Design & Specification Categories. Engineered Lumber; Products. TJI® Joists

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Trus Joist® TJI® joists are a key part of making a high-performance floor. The dimensional stability of TJI joists help them resist warping, twisting and shrinking that can lead to squeaky floors.

Maximum spacing of nails is 18" on-center for TJI® joists. 14 ga. staples may be substituted for 8d (0.113" x 21⁄2") nails if minimum penetration of 1" into the TJI ® joist or rim board is achieved.

Weyerhaeuser TJI® Joist Floor Framing includes a series of joists made in Canada: Weyerhaeuser Trus Joist® TJI® s31, s33 and s47 joists. These new joists offer a wide nailing surface for faster installation and easier handling, and provide the same guaranteed performance you've come to expect from Weyerhaeuser products.

Section 1: 9½"–16" TJI® Joists 6 Floor Span Tables 7 Cantilevers10 Roof Span Table 12 Roof load table 13 Framing Connectors (Simpson Strong-Tie®)14 Framing Connectors (USP Structural Connectors®)15 Allowable Holes 16 Section 2: 18" and 20" TJI® Joists 17 Floor Span Tables 17 Roof Span Table 19 Roof Load Table 19 Cantilevers20

Their dimensional stability helps resist the warping, twisting, and shrinking that can lead to squeaky floors. Because they are lightweight and come in long lengths, they're easier to install than traditional framing. TJI® joists come in different sizes for specific load/span needs.

Span tables in the specifiers guide TJ- 4000 are restricted to the worst case of simple or continuous spans. A multiple, or continuous, span condition is defined as a TJI® joist having two or more spans along its length.

The links below provide additional information and span tables for TJI® Joists used in these 2 different ceiling joist applications. TB 824 - TJI Ceiling Joist Supporting Attic Load and Roof Thrust Load. TB 805 - TJI Ceiling Joist Supporting Attic Load Only

Tailored for professionals, easily size joists, beams, posts, and studs, ensuring optimal performance and cost-effectiveness. Benefit from an intuitive interface, the superior TJ-Pro™ Rating System, and versatile loading assistance.