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MGT/HGT Girder Tiedowns

MGT/HGT

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The MGT and HGT series are girder tiedowns for moderate- to high-load applications that are typically installed prior to roof sheathing. The MGT wraps over the heel and is anchored on one side of the truss. The HGT straddles the heel and anchors on both sides of the truss. The HGT is field-adjustable, making it suitable for trusses with top chord slopes up to 8/12. The HGT is available in sizes for two-, three- and four-ply widths.

Material

  • MGT — 12 gauge; HGT — 7 gauge

Finish

  • MGT — galvanized; HGT — Simpson Strong-Tie gray paint

Installation

  • Use all specified fasteners; see General Notes
  • When the HGT-3 is used with a two-ply girder or beam, shimming is required and must be fastened to act as one unit
  • Attach to grouted concrete block with a minimum one #5 rebar horizontal in the top lintel block
  • MGT — install a minimum of (6) 0.148" x 3" nails into the face of roof member that is on same side as MGT base

Related Literature

Load Tables

MGT/HGT Load Table
  1. Attached members must be designed to resist applied loads.
  2. Concrete shall have a minimum compressive strength of f'c = 2,500 psi.
  3. Grout-filled CMU (GFCMU) shall have a minimum compressive strength of f'm = 1,500 psi.
  4. To achieve the loads listed for the MGT and HGT, install SET-XP® anchoring adhesive anchorage into a 8"-wide concrete tie-beam or grouted and reinforced CMU tie-beam with a minimum embedment depth of 12". Vertical reinforcement may be required to transfer the loads per Designer. Alternate anchorage may be determined by Designer.
  5. Allowable loads have been increased for wind or earthquake loading with no further increase allowed. Reduce where other loads govern.
  6. The MGT can be installed with straps vertical for full table load, provided all specified nails are installed to either a solid header or minimum double 2x6 web.
  7. Fasteners: Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
HGTSee specific model numbers for code listings.
HGT-2 ESR-2613 ESR-2616 ESR-2877 ESR-2523 RR25726 RR25806 FL10456 FL10866
HGT-3 ESR-2613 ESR-2616 ESR-2877 ESR-2523 RR25726 RR25806 FL10456 FL10866
HGT-4 ESR-2613 ESR-2616 ESR-2877 ESR-2523 RR25726 RR25806 FL10456 FL10866
MGT FL11470 FL11473

ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction

Drawings

Part Orthographic Perspective
HGTNone None
HGT-2
HGT-2 Front View
DWG DXF
HGT-2 Left View
DWG DXF
HGT-2 Right View
DWG DXF
HGT-2 Top View
DWG DXF
High Wind Resistant Construction Detail - HWRC D23 Girder/Truss to Masonry/Concrete
DWG DXF
HGT-2 Installed Perspective View
DWG DXF
HGT-2 Installed Perspective View - HGT with HTT
DWG DXF
HGT-3
HGT-3 Front View
DWG DXF
HGT-3 Right View
DWG DXF
HGT-3 Top View
DWG DXF
High Wind Resistant Construction Detail D6: Girder/Truss to Wood Wall Framing - HWRC D6 GirderTruss to Wood Wall Framing
DWG DXF
HGT-2 Installed Perspective View - HGT with HTT
DWG DXF
HGT-3 Installed Perspective View
DWG DXF
HGT-4None
HGT-2 Installed Perspective View - HGT with HTT
DWG DXF
MGT
MGT Front View
DWG DXF
MGT Left View
DWG DXF
MGT Right View
DWG DXF
MGT Top View
DWG DXF
High Wind Resistant Construction Detail - HWRC D23 Girder/Truss to Masonry/Concrete
DWG DXF
High Wind Resistant Construction Detail D6: Girder/Truss to Wood Wall Framing - HWRC D6 GirderTruss to Wood Wall Framing
DWG DXF
MGT Installed Perspective View
DWG DXF