The Simpson DTT1Z ZMAX Galvanized Deck Tension Tie by Simpson Strong-Tie is a safe, cost-effective connector engineered to meet or exceed code requirements for deck construction. Designed for single or double nominal 2x members, the DTT1Z provides a less invasive approach for attaching a new deck to a home or retrofitting an existing deck to current code standards - all without requiring access to interior floor joists. These versatile connectors are also load rated as a holdown for light-duty shearwalls and braced wall panel applications.

Key Features

• Provides secure deck attachments without requiring access to interior floor joists
• Fastens to the narrow or wide face of a single nominal 2x member for versatile installation
• Ties the guardrail post into deck framing
• Stronger and safer than nails, lag screws or bolts
• Ties the deck into the house for a stronger, safer ledger connection
• Helps prevent a common type of deck failure
• Made from 14-gauge steel with ZMAX galvanization for added corrosion resistance in exterior and treated-wood applications

Specifications

• MPN: DTT1Z
• Brand: Simpson Strong-Tie
• Gauge: 14
• Coating: ZMAX
• Finish: ZMAX
• Member Size: Single or double 2x
• Depth: 1-1/2 in.
• Height: 7-1/8 in.
• Seat Depth: 1-7/16 in.
• Centerline: 3/4 in.
• Screw Offset: 3/16 in.
• Country of Origin: United States
• Install With: Fastens to the narrow or wide face of a single nominal 2x with Simpson Strong-Tie Strong-Drive SD Connector screws (SD9112) or nails and accepts a 3/8 in. machine bolt, anchor bolt, or lag screw (washer required) or can be installed with the Strong-Drive SDWH Timber-Hex HDG screw (SDWH27800G) with an integral washer

Approved Applications

• New deck attachment to an existing home
• Retrofitting an existing deck to current code standards
• Guardrail post connections tied into deck framing
• Ledger connections tying the deck into the house structure
• Light-duty shearwall holdown applications
• Braced wall panel applications

Downloads and Resources

• Model No. DTT1ZGa. 14W (in.) 1 1/2H (in.) 7 1/8B (in.) 1 7/16CL (in.) 3/4SO (in.) 3/16Coating/Material. ZMAXSee Load Tables & SPECS : Specifications

Frequently Asked Questions

Does the DTT1Z require access to interior floor joists for installation?

No. The DTT1Z is specifically designed to provide secure deck attachments without requiring access to interior floor joists, making it ideal for both new construction and retrofitting existing decks.

What fasteners are compatible with the DTT1Z deck tension tie?

The DTT1Z fastens to the narrow or wide face of a single nominal 2x with Simpson Strong-Tie Strong-Drive SD Connector screws (SD9112) or nails and accepts a 3/8 in. machine bolt, anchor bolt, or lag screw (washer required). It can also be installed with the Strong-Drive SDWH Timber-Hex HDG screw (SDWH27800G) with an integral washer.

What type of corrosion resistance does the DTT1Z offer?

The DTT1Z is made from 14-gauge steel with ZMAX galvanization, providing added corrosion resistance specifically suited for exterior and treated-wood applications.

Can the DTT1Z be used for applications beyond deck construction?

Yes. In addition to deck construction, the DTT1Z is load rated as a holdown for light-duty shearwalls and braced wall panel applications, making it a versatile connector for a range of structural uses.

Related Products

• DTT1Z Deck Tension Tie Kit)