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Adjustable Deck Tension Tie

ADTT

Reference Series: DTT1Z, DTT1Z-KT

Deck collapses are often caused by failure of the connection where the deck is attached to the main structure due to little or no lateral capacity. ADTT-TZ is an Adjustable Deck Tension Tie designed to effectively transfer the out of plane lateral loads of the deck to the house structure.

Features:
• Exceeds "Deck Attachment for Lateral Loads" requirements per 2021 IRC, Section R507.9.2 [Figure R507.9.2(2)]
• Adjustable design allows lag screw installation at variable distance below deck joist.
• 2-hole break-out washer (BO-W) will work with multiple screw sizes.
• Blocking extensions not required.

Patents: U.S. Patent No. 9,809,974

Materials: 14 gauge

Finish: G-185 galvanizing

Code Reports: View Code Report Table

Resources

MiTek Product Catalog

Technical Bulletins

Installation

• Install with MiTek’s WS8-EXT wood screw or 3/8″ HDG lag screw. WS8-EXT or 3/8-in lag screws may be installed adjacent or up to 4-3/8″ below deck joist (see Figure A).
• Drive screw horizontally and aligned vertically with the deck joist into the Wall Top Plate of the main (house) structure.
• Install four (4) of the specified joist fasteners into vertical legs (Two (2) on each side of deck joist).
• Secure front brace with six (6) specified joist fasteners.
• Re-tighten the WS8-EXT or 3/8″ HDG lag screw as needed to fully engage with the ADTT-TZ. DO NOT OVERDRIVE. Note: Minimum 3″ thread penetration required for proper installation of the WS8-EXT or lag screw.
• For ADTT-TZ detailed installation instructions refer to Click here for English or Click here for Spanish
• For ADTT-TZKT detailed installation instructions refer to Click here for English or Click here for Spanish

Need Help or Have a Question? Contact Customer Service or Call 800-328-5934

Videos

ADTT-TZ Adjustable Deck Tension Tie Installation Instructions

ADTT-TZ Adjustable Deck Tension Tie (out of box)

ADTT-TZKT Adjustable Deck Tension Tie Kit

Load Table

View / Download the above load table as a PDF

Code Report Table

ADTT-TZ

ESR-3847

FL17324

LABC_ESR-3847

ADTT-TZKT

No Code Listing

3-View Product Drawings

MiTek Stock #	Download or View Files
ADTT-TZ	DWG	DXF	PDF	View Image

Application Drawings

MiTek Stock #	Download or View Files
ADTT-TZ	Full ExtensionFlush Extension	DWG DWG	DXF DXF	PDF PDF	View Image View Image

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