Naming Scheme:

The CTUD is a combination coupler nut and take-up device. It compensates for the slack that develops in the system due to the shrinkage of wood members. It will accommodate up to 1" of movement and is available in standard and reducing sizes for 5/8", 3/4", 7/8", 1" and 1 1/8" diameter Strong-Rod™ threaded rod or other threaded rod.

• IMPORTANT : Do not remove the activation pin until the isolator nut is installed at the level above.
• Design of the CTUD eliminates parts and simplifies installation.
• Easy installation saves time, resulting in a lower installed cost.
• Witness Holes™ allow for easy inspection to verify proper thread engagement.
• The positive stop at each end ensures that the rod is threaded to the proper depth.

Installation:

• Remove shrink wrap from CTUD
• Thread the specified CTUD (wider end up) onto the embedded anchor (in first-floor applications) or the Strong-Rod™ threaded rod from the level below. Position so that the activation pin faces out for easy access.
• Thread the Strong-Rod threaded rod from the level above into the CTUD. The CTUD is correctly installed when the anchor or threaded rod is visible through both witness holes.
• Secure Strong-Rod threaded rod at the level above with specified bearing plate and Isolator Nut. Attach Isolator Nut to sill plate above with #8 x 3" screw (included). Continue system installation at each level until the run is complete.
• Remove activation pin after level above is secured with Isolator Nut and prior to covering.

Codes: ICC-ES ESR 2320, City of Los Angeles RR 25643; State of Florida FL10007

top Gallery:
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		CTUD Patent Pending Typical CTUD Installation

top Product Data:

1. Allowable tension capacities are for CTUD only and are based on ES ESR-2320.
2. No further steel stress increase allowed.
3. Deflection at demand load may be calculated by (demand/capacity)*Δ_A.
4. Thread specification for threaded rod must be UNC Class 2A per ANSI/ASME B1.1.