Deck & Fences

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 "Hold-Down Device" requirements per 2015 IRC, Section 507.2.4
• 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

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

Code Report Table

MiTek Stock# ICC-ES IAPMO FLORIDA LA CITY
ADTT-TZ
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 Extension DWG DXF PDF View Image
Flush Extension DWG DXF PDF View Image
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