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LGT Light Girder Tiedown

LGT

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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

The LGT is a connector designed to resist light to moderate uplift loads of multi-ply trusses. This light girder tiedown provides a low-profile connection to the masonry wall for easy installation of drywall. The LGT connector also provides exceptional bearing enhancement for heavy download applications.

Key Features

  • Suitable for retrofit applications
  • Embossments that add stiffness in crucial areas for improved performance
  • Simple to install and can be installed on the inside or outside of the wall
  • Load rated to resist high-wind forces

Material

  • LGT2 — 14 gauge; LGT3/LGT4 — 12 gauge

Finish

  • Galvanized (G90). Some models availabale in HDG; see Corrosion Information.

Installation

  • Use all specified fasteners; see General Notes
  • Connectors attached using Titen Turbo™ 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 Heavy-Duty Connector screws included with LGT3 and LGT4
  • LGT3-SDS2.5 — the four large hexagon holes are intended for GFCMU and concrete applications
  • Products shall be installed such that Titen Turbo screws and non-stainless Titen HD® anchors are not exposed to the exterior environment

Related Literature

Wood Construction Connectors 2021-2023
C-C-2021
A catalog including new product information as well as any applicable specification and installation instructions for wood-to-wood and wood-to-concrete structural connectors.
Catalog
Conectores para la construcción con madera 2019–2020
C-C-2019SP
El catálogo incluye información sobre nuevos productos, así como especificaciones e instrucciones de instalación aplicables para conectores estructurales de madera a madera y de madera a concreto.
Catalog
High Wind Guide
F-C-HWG20
A comprehensive guide to help Designers select the most appropriate connections for challenging, high-wind regions.
Product Guide
Hurricane Tie Used for Truss Bearing Enhancement
T-C-HTIEBEAR18
A technical bulleting providing the allowable downloads of our hurricane ties when used for truss-bearing enhancement. The piece includes allowable loads for connectors and for the connectors and wood combined.
Technical Bulletin
Uplift Connectors Truss-To-Wall Tiedowns (Spruce-Pine-Fir)
T-C-UPLIFTSPF19
A technical bulletin providing allowable loads and fastening requirements for the common application of a wood truss supported by a spruce-pine-fir or hem-fir double top plate.
Technical Bulletin

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Description Ga. W (in.) H (in.) Coating/Material Product Includes Packaging Qty.
LGT2 2-ply width 14 7 1/4 13 1/2 Zinc Galvanized, G90 - 1
LGT2HDG 2-ply width 14 7 1/4 13 1/2 Hot-Dip Galvanized - 1
LGT3-SDS2.5 3-ply width 12 10 14 13/16 Zinc Galvanized, G90 (12) 1/4 in. x 2-1/2 in. Strong-Drive® SDS Heavy-Duty Connector screws 1
LGT4-SDS3 4-ply width 12 12 5/8 15 5/16 Zinc Galvanized, G90 (16) 1/4 in. x 3 in. Strong-Drive® SDS Heavy-Duty Connector screws 1

Load Tables

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

Model No. Qty. No. of Plies Fasteners (in.) Allowable Uplift Load (160)
Girder Concrete and GFCMU DF/SP SPF/HF
LGT2 1 2 ply (16) 0.148 x 3 1/4 (7) 1/4 x 2 1/4 Titen Turbo5 2,030 1,750
LGT3-SDS2.5 1 3 ply (12) 1/4 x 2 1/2 SDS (4) 3/8 x 5 Titen HD 3,285 2,365
LGT4-SDS3 1 4 ply (16) 1/4 x 3 SDS (4) 3/8 x 5 Titen HD 3,285 2,365
  1. Allowable loads have been increased for wind or earthquake loading with no further increase allowed. Reduce where other loads govern.
  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. LGT2 — F1 load = 700 lb.; F2 load = 170 lb.; LGT3 — F1 load = 795 lb.; F2 load = 385 lb.; LGT4 — F1 load = 2,000 lb.; F2 load = 675 lb.
  5. For concrete wall applications, use 1/4" x 1 3/4" Titen Turbo screws.
  6. 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).
  7. See Titen Turbo screw information.
  8. Fasteners: Nail dimensions in the table are diameter by length. SDS screws are Simpson Strong-Tie® Strong-Drive screws. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors. Titen Turbo screws are Simpson Strong-Tie concrete and masonry screws (hex-head model required).

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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