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DTT1Z Tension Tie & Holdown
Description

Simpson Strong‑Tie offers a wide variety of holdown devices designed and tested to address many applications and load demands. The DTT1Z Tension Tie & Holdown is designed for lighter‑duty holdown applications on single or double studs. It can also be utilised in horizontal applications as a tension tie to provide balustrade or similar support. The DTT1Z is ideal for retrofit or new construction projects.

  • DTT1Z-KT (Timber) Bracewall Holdown Kit includes: (4) DTT1Z; (4) SDWH27800G; (24) SD#9 x 38mm
  • DTT1Z-KTM (Concrete) Bracewall Holdown Kit includes: (4) DTT1Z; (4)THD08140MG; (24) SD#9 x 38mm
Key Features
  • The DTT1Z holdown bracket has engineered swages for extra strength and to minimise deflections
  • Designed for external and internal braced walls for concrete foundations and timber mid or sub-floors constructed in accordance with NZS 3604:2011, and exceeding the typically required 15kN holdown capacity
  • Can be installed anytime before plasterboard or wall lining
  • The load capacities are applicable for 20MPa concrete strengths
  • The M8 x 140mm Titen HD® Heavy Duty Screw Anchor has serrated cutting teeth and patented thread design, which reduce installation torque, enable quick and easy installation into concrete
  • The SDWH27 structural timber screw requires no pre-drilling for installation into timber mid or sub-floor members
  • Installs easily with Strong-Drive SD9 Connector Screws
Scope of Use
  • Holdown Applications including thermally insulated slabs
  • Resisting tension load applications
  • Deck-to-House Lateral Load Connection
  • Bracewall Holdown applications to concrete or timber substrates
  • Can be used as an alternative brace panel holdown in GIB EzyBrace® systems
  • Retrofit or new construction projects
  • Residential and commercial projects
  • Mid floor vertical connection applications
  • Engineered Wood Products (EWP)
  • Cross-Laminated Timber (CLT)
Statement of Building Code Compliance
  • BRANZ Appraisal 983 (2023) for external and internal braced walls for concrete foundations and timber mid or sub-floors constructed in accordance with NZS 3604:2011, and exceeding the typically required 15kN holdown capacity.
  • Can be used as an alternative brace panel holdown in GIB EzyBrace® systems.
Documents
Timber Connectors - NZS3604
Technical Data Sheet
BRANZ Appraisal

983 [2023]

Externally hosted drawings
Flyer

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