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LTA Lateral Truss Anchor

LTA

Lateral Load Transfer - Masonry

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

  • Whether in grout-filled CMU or concrete, the LTA2 must be embedded to the depth of the embedment line stamped on the part.
  • A minimum of one horizontal #5 rebar is required at top of concrete or in the top course of grout-filled CMU.
  • For parallel-to-wall applications, install the LTA2 with flanges facing the center of the wall. Minimum edge distance of 1 1/2" is required.

Related Literature

Load Tables

LTA 2 Load Capacities: Wood Installation
Model No./Installation Fasteners to Joist/Truss DF/SP Allowable Loads (lbs) HF/SPF Allowable Loads (lbs)
DF Uplift SP Uplift lateral (160) Uplift Lateral (160)
(160) (160) F1 F2 (160) F1 F2
LTA2 Perpendicular-to-Wall Installation (10) 10d X 1 1/2" 1210 1425 415 875 1015 415 735
LTA2 Parallel-to-Wall Installation (10) 10d X 1 1/2" 1210 1390 950 220 1015 800 220
  1. Concrete applications are based on f'c = 2500 psi.
  2. CMU applications are based on fully grouted CMU with an f'm = 1500 psi.
  3. CMU and concrete applications require one (1) #5 rebar minimum.
  4. Loads have been increased for wind or seismic loading with no further increase allowed; reduce where other loads govern.
  5. The gable end wall should be braced to either the roof or ceiling diaphragm. Additional connectors may be required.

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.

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
DWGDXF
LTA2 front view
DWG DXF
LTA2 left view
DWG DXF
LTA2 right view
DWG DXF
LTA2 top view
DWG DXF
High Wind-Resistant Construction D117: Gable End to Wall Framing
DWG DXF
High Wind-Resistant Construction D23: Girder/Truss to Masonry/Concrete
DWG DXF