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HHETA Extra-Heavy Embedded Truss Anchor

HHETA

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Truss-to-Wall Connections

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

The HHETA provides an engineered method to attach roof trusses securely to concrete and masonry walls. This extra-heavy embedded truss anchor features staggered nail patterns to strengthen uplift resistance and can be used in pairs on single- and multi-ply trusses. The versatile HHETA can be installed straight or field-bent around truss or rafter members.

Key Features

  • Indented embedment line ensures accurate embedment depth
  • Compatible with the Simpson Strong-Tie TSS and TBP8 moisture barrier plate
  • Load rated for wind and seismic forces

Material

  • 14 gauge

Finish

  • Galvanized

Installation

  • Use all specified fasteners; see General Notes.
  • Embedded 4" into a 6" min. concrete beam or 8" nominal grouted block wall.
  • For mislocated truss anchors which are greater than 1/8" but less than 1 1/2" from the face of the truss, a shim must be provided. Shim design by truss engineer. When gap is greater than 1 1/2", abandon existing embedded truss anchor and install new anchor per designer.
  • Minimum spacing of single anchors is twice the embedment depth for full load. For closer spacing, see loads for double anchor installation.
  • In double anchor installations, install anchors with spoons facing outward and straps spaced no more than 1/8" wider than the rafter/truss width. Do not install nails where the straps overlap when wrapped over the rafter/truss.
  • Straps do not need to be wrapped over the rafter/truss to achieve tabulated loads, unless noted otherwise.

Related Literature

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Ga. H (in.) Coating/Material Packaging Qty.
HHETA16 14 12 Zinc Galvanized, G90 1
HHETA18 14 14 Zinc Galvanized, G90 1
HHETA20 14 16 Zinc Galvanized, G90 1
HHETA24 14 20 Zinc Galvanized, G90 1
HHETA40 14 36 Zinc Galvanized, G90 1

Load Tables

Embedded Truss Anchors and Truss Seat Snap-In Load Table
  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. For simultaneous loads in more than one direction, the connector must be evaluated using either the Unity Equation or the 75% Rule, as described in Straps and Ties General Notes.
  5. The HHETA allowable F1 load can be increased to 435 lb. if the strap is wrapped over the truss and a minimum of 12 nails are installed.
  6. F1 lateral loads listed for double HHETA on 2- or 3-ply rafter/truss may cause an additional 1/16" deflection beyond the standard 1/8" limit where the straps are installed not wrapped over the heel as shown.
  7. Minimum edge distance for HHETA is 1 1/2" for concrete and 2" for masonry. Where edge distance is less than 2" for masonry, the maximum uplift load is 1,005 lb.
  8. It is acceptable to use a reduced number of fasteners provided that there is a reduction in uplift allowable load. Calculate the connector allowable load for a reduced number of nails as follows: Allowable Load = (No. of Nails Used) / (No. of Nails in Table) x Table Load. Lateral loads require the lowest 7 nail holes filled for HHETA.
  9. For double HHETA installations, install half of the required fasteners in each strap.
  10. 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 & Compliance

Drawings

PDF DWG DXF RFA IFC SAT