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FGTR/LGT/VGT Retrofit Girder Tiedowns

FGTR/LGT/VGT

The LGT, VGT and FGTR products are moderate- to high-load capacity girder tiedowns for new or retrofit applications.

LGT connectors provide a low-profile connection to the wall for easy installation of drywall. Simple to install and can be installed on the inside or outside of the wall.

The VGT variable girder tiedown is a higher-capacity alternative to the LGT and MGT for girder trusses. It attaches with Simpson Strong-Tie® Strong-Drive® SDS Heavy-Duty Connector screws to the side of truss and features a predeflected crescent washer that allows it to accommodate top chord pitches up to 8/12. The VGT is also available with one flange concealed for attachment to trusses with no tail.

The FGTR face-mount girder tiedown is a non-pitch-specific girder tiedown that offers the highest uplift capacity for retrofit applications. The FGTRHL/R is designed for corner hip applications.

Material

  • VGT — 7 gauge; LGT2 — 14 gauge; LGT3/LGT4 — 12 gauge; FGTR — straps: 7 gauge, plate: 3 gauge

Finish

  • VGT, LGT — galvanized; FGTR — powder-coated

Installation

  • Use all specified fasteners; see General Notes.
  • Connectors attached using Titen® screws shall have hex heads.
  • 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 screws included with LGT3, LGT4, VGT series and FGTR series.

VGT/FGTR:

  • 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.
  • FGTR — Only two of the four holes provided on each strap are required to be filled to achieve the catalog loads. The first Titen HD® anchor 1/2" x 5" (THD) shall be installed a minimum of 4" from the top of the wall. Fasteners shall not be installed in adjacent holes.
  • VGT — When installed on trusses with no overhangs, specify VGTR/L.
  • VGT — Install washer component (provided) so that top of washer is horizontal as well as parallel with top of wall.

Options

  • LGT3 is available with reduced widths of W = 4 13/16" — order as LGT3N-SDS2.5

Related Literature

Load Tables

  1. Allowable loads have been increased 60% for wind or earthquake loading with no further increase allowed; reduce where other loads govern.
  2. 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 tie-beam can be made using Simpson Strong-Tie® SET XP® anchoring adhesive with a minimum embedment depth of 12", a minimum end distance of 12" and centered in the 8" member. Vertical reinforcement may be required to transfer the loads per Designer.
  3. Minimum f'c = 2,500 psi and minimum f'm = 1,500 psi.
  4. FGTR—Minimum edge distance for Titen HD anchor is 4".
  5. FGTR—Titen HD anchors should be spaced in every other hole on the part.
  6. FGTR—The Titen HD anchors and SDS Heavy-Duty Connector screws are provided with the part.
  7. LGT2—F1 load = 700 lb., F2 load = 170 lb.
  8. See Titen® screw information.
  9. Table allowable loads were determined using tested lowest ultimate/3 or fastener calculation values.
  10. Products shall be installed such that the Titen screws and Titen HD anchors are not exposed to the weather.
  11. For concrete wall applications use 1/4" x 1 3/4" Titen screws.
  12. Simpson Strong-Tie® Strong-Drive® SDS Heavy-Duty Connector screws are permitted to be installed through metal truss plates as approved by the Truss Designer, provided the requirements of ANSI/TPI 1-2007 Sections 7.5.3.4 and 8.9.2 are met (pre-drilling required through the plate using a maximum of 5/32" bit).
  13. NAILS: 16d Sinker = 0.148" dia. x 3 1/4" long. See other nail sizes and information.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
FGTR FL11473
FGTRHL FL11473
FGTRHR FL11473
LGTSee specific model numbers for code listings.
LGT2 FL11473
LGT3-SDS2.5 FL11473
LGT4-SDS3 FL11473
VGT FL11473
VGTL FL11473
VGTR FL11473

Drawings

Part Orthographic Perspective
FGTR
FGTR
DWGDXF
FGTR front view
DWG DXF
FGTR right view
DWG DXF
High Wind-Resistant Construction D19: Post-Installed Truss/Rafter to Masonry/Concrete
DWG DXF
High Wind-Resistant Construction D21: Girder/Truss to Masonry/Concrete
DWG DXF
High Wind-Resistant Construction D32: Truss/Rafter Hip to End Wall
DWG DXF
High Wind-Resistant Construction D33: Truss/Rafter Hip to End Wall
DWG DXF
FGTRHL
FGTRHL
DWGDXF
FGTRHL front view
DWG DXF
FGTRHL right view
DWG DXF
High Wind-Resistant Construction D25: Truss/Rafter Hip to Wall
DWG DXF
High Wind-Resistant Construction D28: Truss/Rafter Hip to Wall
DWG DXF
FGTRHRNone None
LGTNone None
LGT2
LGT2
DWGDXF
LGT2 front view
DWG DXF
LGT2 left view
DWG DXF
LGT2 right view
DWG DXF
High Wind-Resistant Construction D20: Post-Installed Truss/Rafter to Masonry/Concrete
DWG DXF
High Wind-Resistant Construction D23: Girder/Truss to Masonry/Concrete
DWG DXF
High Wind-Resistant Construction D40: Truss/Rafter Directly to Stud
DWG DXF
LGT2 Wood to Wood 1
DWG DXF
LGT2 Masonry
DWG DXF
LGT2 Wood to Wood 2
DWG DXF
LGT3
LGT3-SDS2.5
DWGDXF
LGT3-SDS2.5 front view
DWG DXF
LGT3-SDS2.5 left view
DWG DXF
LGT3-SDS2.5 right view
DWG DXF
High Wind-Resistant Construction D23: Girder/Truss to Masonry/Concrete
DWG DXF
LGT3-SDS2.5
DWG DXF
LGT4
LGT4
DWGDXF
LGT4 front view
DWG DXF
LGT4 left view
DWG DXF
LGT4 right view
DWG DXF
LGT4 top view
DWG DXF
High Wind-Resistant Construction D23: Girder/Truss to Masonry/Concrete
DWG DXF
VGT
VGT
DWGDXF
VGT front view
DWG DXF
VGT left view
DWG DXF
VGT right view
DWG DXF
VGT top view
DWG DXF
High Wind-Resistant Construction D23: Girder/Truss to Masonry/Concrete
DWG DXF
High Wind-Resistant Construction D7: Girder/Truss to Wood Wall Framing
DWG DXF
VGT Double Installation with HDU4s
DWG DXF
VGTR Single Installation with HDU4
DWG DXF
VGTL
VGTL
DWGDXF
VGTR
DWGDXF
VGTL front view
DWG DXF
VGTL left view
DWG DXF
VGTL right view
DWG DXF
VGTL top view
DWG DXF
None
VGTR
VGTR front view
DWG DXF
VGTR left view
DWG DXF
VGTR right view
DWG DXF
VGTR top view
DWG DXF
None