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LTA Lateral Truss Anchor

LTA

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Hurricane Ties for Masonry

This product's information may differ depending on the category of use. You are currently viewing details related to Hurricane Ties for Masonry. You can also view product information related to the categories of: Truss-to-Wall Connections, Lateral Load Transfer - Masonry, Roof Truss and Rafter Connectors, Ties, and Straps for Cold-Formed Steel Construction

The LTA2 is an embedded truss anchor for grout-filled CMU and concrete walls that develops high loads with shallow embedment. Designed for 2x4 minimum truss chords, the LTA2 resists uplift and lateral loads parallel and perpendicular to the wall with a minimum heel height requirement.

Key Features

  • Simplified design of the embedded portion allows for easy positioning close to rebar
  • Ideal for anchoring trusses running perpendicular or parallel to the wall
  • Embedment line stamped on part simplifies installation and helps avoid installation errors

Material

  • 18 gauge

Finish

  • Galvanized; see Corrosion Information

Installation

  • Use all specified fasteners; see General Notes.
  • Whether in grouted CMU or concrete, the LTA2 must be embedded to the depth of the embedment line stamped on the part.
  • Attach to grouted concrete block with a minimum one #5 rebar horizontal in the top lintel block.
  • For parallel-to-wall applications, install the LTA2 with flanges facing the center of the wall. Minimum edge distance of 1 1/2" required.

Related Literature

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High Wind-Resistant Construction Application Guide
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Load Tables

LTA 2 Load Capacities: Wood Installation
Model No. Ga. W (in.) L (in.) Fasteners (in.) DF/SP Allowable Loads SPF/HF Allowable Loads
To Rafter / Truss To GFCMU To Concrete Uplift4 Lateral (160) Uplift Lateral (160)
(160) F1 F2 (160) F1 F2
LTA2 Perpendicular-to-Wall Installation 18 — — (10) 0.148 x 1 1/2 Embed Embed 1180 415 875 990 415 735
LTA2 Parallel-to-Wall Installation 18 — — (10) 0.148 x 1 1/2 Embed Embed 1180 950 220 990 800 220
  1. 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. LTA2 allowable uplift on SP is 1,350 lb. for perpendicular-to-wall installation and parallel-to-wall installation.

BCSI Lateral Load Limits

The Truss Industry (WTCA and TPI) places the following general limits on shear load transfer through the truss. Trusses are permitted to transfer load in the F1 direction from the roof sheathing to the wall below, per the BCSI — B8 Summary Sheet, provided the:

  • Distance between diaphragm and wall (a.k.a. truss heel height) is no greater than 6"
  • Trusses are spaced no greater than 24" o.c.
  • Horizontal shear load transfer is no greater than 50 plf

Trusses that do not meet all the conditions above must resolve the lateral load transfer between the diaphragm and the wall by using blocking or some other means.

LTA2 Perpendicular-to-Wall Installation
LTA2 Perpendicular-to-Wall Installation
LTA2 Parallel-to-Wall Installation
LTA2 Parallel-to-Wall Installation

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
LTA2 FL11473 FL13904

Drawings

Part Orthographic Perspective
LTA2
LTA2 Front View
DWG DXF
LTA2 Left View
DWG DXF
LTA2 Right View
DWG DXF
LTA2 Top View
DWG DXF
High Wind Resistant Construction Detail D117: Gable End to Wall Framing - HWRC D117 Gable End to Wall Framing
DWG DXF
High Wind Resistant Construction Detail - HWRC D23 Girder/Truss to Masonry/Concrete
DWG DXF

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