CJTZ Concealed Joist Tie
The CJTZ is a concealed connector. It can be installed three ways: with no routing of header/post or beam, a routed header/post or a routed beam. It is part of a concealed connector system that includes the CPTZ and CBTZ.
Material
- 12 gauge
Finish
- CJTZ — ZMAX® coating
- Strong Drive® SDS Heavy-Duty Connector screw — double-barrier coating
Installation
- Use all specified fasteners; see General Notes.
- The CJTZ Pack is supplied with all dowels and screws required. Screws require a hex-head driver.
- Router end of beam for screw heads for flush installation.
- The carried member may be sloped up or down to 45° with full table loads.
- For attachment installation instructions, see Technical Bulletin Concealed Joist Tie Kit (T-C-CJTZ).
Warning
- This connector requires special attention to ensure correct installation. The beam must be installed perpendicular to the support member. The connection's components may be damaged if the beam is rotated from its opposite end during or after installation. Damaged components may not be noticeable and may reduce the connector's load carrying capacity.
Ordering Information
- To order: specify short (e.g. CJT3ZS) or long dowels (e.g. CJT3ZL).
- Short dowel (1/2" x 2 3/4") for use with 3 1/8 glulam beam, 4x sawn lumber or 3 1/2" wide PSL. Long dowel (1/2" x 4 3/4") for use with 5 1/8 glulam beam, 6x sawn lumber or greater widths.
Related Literature
-
Conectores para la construcción en madera 2017–2018C-C-2017SPInformación completa de productos, de la aplicación, de las tablas de cargas y de la instalación, para más de 3,000 conectores de madera a madera, madera a concreto y concreto a mampostería.Catalog -
CJTZ-HCJTZ - Concealed Joist Tie KitsT-C-CJTZ17A technical bulletin providing technical information and installation instructions for the CJTZ/HCJTZ kits.Technical Bulletin -
Allowable Loads for Concealed Beam Tie (CBTZ) Alternate Installation DetailsL-C-CBTZALT17This letter summarizes allowable loads for alternate installations of the CBTZ connectors with multi-ply beams, spliced beams and installed with the CJT concealed joist tie connectors.Engineering Letter -
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Load Tables
These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.
- Center dowel in beam. Short dowel (1/2" x 2 3/4") for use with 3 1/8" glulam beam, 4x sawn lumber, or 3 1/2" wide PSL. Long dowel (1/2" x 4 3/4") for use with 5 1/8 glulam beam, 6x sawn lumber or greater widths.
- See technical bulletin T-C-CJTZ at strongtie.com for additional load information with long dowels.
Code Reports
| Part | IAPMO UES ER | ICC-ES ESR | City of Los Angeles | State of Florida |
|---|---|---|---|---|
| CJT | See specific model numbers for code listings. | |||
| CJT3 | ER-102 ER-280 | RR25962 | FL10865 | |
| CJT3L | No code listing. Please contact us for test data. | |||
| CJT3S | No code listing. Please contact us for test data. | |||
| CJT4 | ER-102 ER-280 | RR25962 | FL10865 | |
| CJT4L | No code listing. Please contact us for test data. | |||
| CJT4S | No code listing. Please contact us for test data. | |||
| CJT5 | ER-102 ER-280 | RR25962 | FL10865 | |
| CJT5L | No code listing. Please contact us for test data. | |||
| CJT5S | No code listing. Please contact us for test data. | |||
| CJT6 | ER-102 ER-280 | RR25962 | FL10865 | |
| CJT6L | No code listing. Please contact us for test data. | |||
| CJT6S | No code listing. Please contact us for test data. | |||
Drawings
| Part | Orthographic | Perspective |
|---|---|---|
| CJT3 | ||
| CJT3L | ||
| CJT3LKT | ||
| CJT3S | ||
| CJT3SKT | ||
| CJT3ZL | None | None |
| CJT3ZS | None | None |
| CJT4 | ||
| CJT4L | ||
| CJT4LKT | ||
| CJT4S | ||
| CJT4SKT | ||
| CJT4ZL | None | None |
| CJT4ZS | None | None |
| CJT5 | ||
| CJT5L | ||
| CJT5LKT | ||
| CJT5S | ||
| CJT5SKT | ||
| CJT5ZL | None | None |
| CJT5ZS | None | None |
| CJT6 | ||
| CJT6L | ||
| CJT6LKT | ||
| CJT6S | ||
| CJT6ZL | None | None |
| CJT6ZS | None | None |
