VGT Variable-Pitch Girder Tiedown
Girder Tiedowns for Masonry
This product's information may differ depending on the category of use. You are currently viewing details related to Girder Tiedowns for Masonry. You can also view product information related to the categories of: Girder Tiedowns, Girder Tiedowns for Plated Truss, Roof Truss and Rafter Connectors, Ties, and Straps for Cold-Formed Steel Construction
Product Details
The VGT is a girder tiedown for moderate- to high-load masonry applications with girder trusses. This tiedown is designed for installation on the side of a truss, and it attaches with Strong-Drive® SDS Heavy-Duty Connector screws. The VGT can be bolted directly into CMU or bolted directly to the foundation.
Key Features
- Suitable for retrofit applications
- Available with one flange concealed for attachment to trusses with no tail
- Load rated to resist high-wind forces
Material
- 7 gauge
Finish
- Galvanized
Installation
- Use all specified fasteners; see General Notes
- The product can be installed in a single application or in pairs to achieve a higher uplift capacity
- To achieve the loads listed in the table below, the product shall be attached to a grouted and reinforced block wall or a reinforced concrete wall designed by others to transfer the high concentrated uplift loads to the foundation
- Strong-Drive SDS Heavy-Duty Connector screws included
- Screw holes are configured to allow for double installation on a two-ply (minimum) truss
- The product can be installed in a single application or in pairs to achieve a higher uplift capacity
- Can be installed on roof pitches up to 8/12 or on a bottom chord designed to transfer the loads
- When installing on trusses with no overhangs, specify VGTR/L
- Install washer component (provided) so top of washer is horizontal and parallel with top of wall
Patent Information
- US Patent 7,707,785
Related Literature
Product Information Table
| Model No. | Ga. | W (in.) | H (in.) | CL (in.) | Coating/Material | Product Includes | Packaging Qty. |
|---|---|---|---|---|---|---|---|
| VGT | 7 | 8 1/2 | 4 1/4 | 1 7/8 | Zinc Galvanized, G90 | (16) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws and (1) predeflected crescent washer | 1 |
| VGTL | 7 | 8 1/2 | 4 1/4 | 1 7/8 | Zinc Galvanized, G90 | (16) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws and (1) predeflected crescent washer | 1 |
| VGTR | 7 | 8 1/2 | 4 1/4 | 1 7/8 | Zinc Galvanized, G90 | (16) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws and (1) predeflected crescent washer | 1 |
Load Tables
- Allowable loads have been increased for wind or earthquake loading with no further increase allowed. Reduce where other loads govern.
- To achieve the loads listed for the VGT single- and double-connector options, anchorage into a 8" wide concrete tie-beam or grouted and reinforced CMU bond beam can be made using SET-3G, ET-3G™, or AT-3G™ anchoring adhesive with a minimum embedment depth of 12", with a minimum end distance of 12", and centered in the 8" member. Vertical reinforcement may be required to transfer the loads per designer. Alternate anchorage solutions may be determined by designer.
- Concrete shall have a minimum compressive strength of f'c = 2,500 psi.
- Grout-filled CMU (GFCMU) shall have a minimum compressive strength of f'm = 1,500 psi.
- Strong-Drive SDS Heavy-Duty Connector screws may be installed through metal truss plates as approved by the truss designer, provided the requirements of ANSI/TPI 1-2014, Sections 7.5.3.4 and 8.9.2 are met (predrilling required through the plate using a 5/32" bit maximum).
- Fasteners: SDS screws are Simpson Strong-Tie® Strong-Drive screws. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
Code Reports & Compliance
Drawings
| DWG | DXF | RFA | IFC | SAT | |||
|---|---|---|---|---|---|---|---|
