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THAI Adjustable Hanger

Top-Flange Hangers for Engineered Wood

This product's information may differ depending on the category of use. You are currently viewing details related to Top-Flange Hangers for Engineered Wood. You can also view product information related to the category: Face-Mount Hangers for Engineered Wood

Designed for I-joists, the THAI has extra-long straps and can be field-formed to give height adjustability and top-flange hanger convenience. Positive-angle nailing helps eliminate splitting of the I-joist's bottom flange.


  • Galvanized


  • Factory-order the THAI-2 for hanger width needed. See table for allowable widths.
  • Use all specified fasteners. Verify that the header can take the fasteners specified in the table.
  • Web stiffeners are required for all I-joists used with these hangers.
  • When a total of 20 face nails are used in THAI straps, or 30 face nails are used in THAI-2 straps, the maximum load-carrying capacity is achieved.
  • Reduce load given by allowable nail shear capacity for each nail less than maximum.
  • A minimum nailing configuration is shown for top nailing installations. The strap must be field-formed over the top of the header by a minimum of 2 1/2".
  • Uplift — lowest face nails must be filled to achieve uplift loads.

Related Literature

Product Information Tables

THAI Adjustable Hanger Dimensions
  1. The W dimension should be ordered at 1/16" to 1/8" greater than the joist width.

Load Tables

Allowable Loads for Various Headers

THAI Allowable Loads for Top-Flange Min. Nailing Installation on Nailers
  1. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
  2. Uplift loads are based on DF/SP lumber. For SPF/HF, use 0.86 x DF/SP uplift load.
  3. The minimum header depth to achieve the maximum nail configuration is 16".
  4. For the THAI3522 supporting a 2 1/4" joist, the download shall be the lesser of the table load or 1,400 lb.
  5. 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.
  6. See other nail sizes and information.

THAI Allowable Loads for Top-Flange Min. Nailing Installation on Nailers

THAI Allowable Loads for Top-Flange Min. Nailing Installation on Nailers
  1. Loads for 2x nailers are applicable to single 4x2 top chord carrying members provided the hanger is located at a top chord panel point and there is no splice at that panel point location.
  2. Attachment of nailer to supporting member is the responsibility of the designer.

Code Reports & Compliance