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Product Details

The variable-pitch girder tiedown, VGT, is a high-capacity tiedown for multi-ply girder trusses and is suitable for High Wind Zones. It attaches with self-drilling screws from the side of the truss. The VGT uses Simpson Strong-Tie® Strong-Drive® SDS Heavy-Duty Connector screws for wood truss applications.

The VGT features a predeflected seat and washer reducing deflection under load. This also allows the connector to accommodate top chord pitches of up to 35 degrees.

US Patent 7,707,785

Material

Carbon Steel 4.5mm thick

Finish

Z275 Galvanised

Features & Benefits
  • Suitable for retrofit applications
  • Available with one flange concealed for attachment to trusses with no tail
  • Load rated to resist high-wind forces
  • Suits 12mm and 16mm threaded rod
  • Can be used with post installed AT-HP or VT-HP
Installation
  1. Use all specified fasteners
  2. Screw holes are configured to allow for double installation on multi-member girders
  3. Install washer component (provided) so that top of washer is horizontal and parallel with top of wall
Applications
  • Can be installed in a single application or in pairs to achieve a higher uplift capacity
  • Can be installed on roof pitches up to 35º 
  • Suitable for High Wind Zones
  • Suitable for use with cast in or post installed threaded rod
Model No. Table

Technical Data - Gable Plates

Model No.

Quantity

No. of Truss Plies

Fasteners

Allowable Uplift Load (kN)

Carton Qty

Anchor Dia.

Girder Truss

VGT

1

2

M16

(16) SDS

38.5

6

VGT

2

2

(2) M16

(32) SDS

57.1

6

VGT

2

3

(2) M16

(32) SDS

38.5

6

  1. Designer shall insure attached members are adequately designed to resist applied loads.
  2. Minimum joint group JD5.
  3. Maximum roof pitch of 35 degrees
  4. Capacities in accordance to AS1720.1 and AEFAC Guide for testing and evaluation of timber connection.
  5. Truss plies minimum 35mm thick each
  6. M12 rod capacity is 27kN.
  7. Capacity of 2/M12 rods (either side of truss) is 54kN
  8. Threaded rods to be minimum grade 4.6.
  9. Concrete design and fixing to concrete by others.
 
Brochures & Catalogues

Brochures and Catalogues

PDF icon Flyer - Variable-Pitch Girder Tiedown
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - VGT

Report Links

Warranty

Warranty

Inspiration
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With nearly 60 years of field and R&D experience, Simpson Strong-Tie® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Structural Connectors Overview Flyer.

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From straps and ties to joist hangers and much more, Simpson Strong-Tie® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection. Download the Timber Construction Connectors Catalogue (2016-2018).