THA/THAC Adjustable Truss Hangers
The THA series have extra long straps that can be field-formed to give height adjustability and top-flange hanger convenience. THA hangers can be installed as top-flange or face-mount hangers.
THA4x and THA2x-2 models feature a dense nail pattern in the straps, which provides more installation options and allows for easy top-flange installation.
- See table
- Galvanized. Some products available in ZMAX® coating. See Corrosion Information.
- Use all specified fasteners; see General Notes.
The following installation methods may be used:
- Top-Flange Installation — The straps must be field formed over the header — see table for minimum top-flange requirements. Install top and face nails according to the table. Top nails shall not be within 1/4" from the edge of the top-flange members. For the THA29, nails used for joist attachment must be driven at an angle so that they penetrate through the corner of the joist and into the header. For all other top-flange installations, straighten the double-shear nailing tabs and install the nails straight into the joist.
- Face-Mount Installation — Install all face nails according to the table. Not all nail holes will be filled on all models. On models where there are more nail holes than required, the lowest four face holes must be filled. Nails used for the joist attachment must be driven at an angle so that they penetrate through the corner of the joist into the header.
- Alternate Installation — The THA 4x hangers may be installed in a top-flange configuration using the tabulated fasteners for face-mount installation and achieve the face-mount installation loads. Install the tabulated face nails into the face and top of the carrying member. Nails used for the joist attachment must be driven at an angle so that they penetrate through the corner of the joist into the header.
- Uplift — Lowest face nails must be filled to achieve uplift loads.
- THA hangers available with the header flanges turned in for 3 5/8" (except THA413) and larger, with no load reduction — order THAC hanger.
Conectores Metálicos Estructurales 2013-2015C-2013SPInformación completa de productos, de la aplicación, de las tablas de cargas y de la instalación, para conectores Simpson Strong-Tie® de madera a madera, madera a concreto y concreto a mampostería.Catalog
High Wind-Resistant Construction Application GuideF-C-HWRCAG16The newly updated High Wind-Resistant Construction Application Guide offers new applications, updated loads, as well as more fastening information that is used to resist high-wind.Product Guide
Allowable Loads for Joist Hangers with GapsT-C-HANGERGAP16A six-page technical bulletin explaining how allowable loads for joist and truss hangers are affected for gaps between the end of the carried member and carrying member.Technical Bulletin
Connection Solutions for Cantilevered FloorsT-C-CNTLVRDFL16A technical bulletin providing connection solutions to create a continuous load path within a cantilevered floor system. Offers options based on the floor systems being used.Technical Bulletin
Hangers on Rim Boards HeadersT-C-RIMBDHGR16A one-page technical bulletin discussing condition when face-mount and top-flange hangers can be used with an engineered “rim board” wood product.Technical Bulletin
Use of Power-Driven Nails with Simpson Strong-Tie® ConnectorsT-PNEUMATIC12This technical bulletin discusses the use of pneumatically driven nails with Simpson Strong-Tie® connectors. Includes a list of connectors that may be installed with pneumatic nails.Technical Bulletin
THA and Suspended JoistsL-C-THAALT17Allowable Loads for Simpson Strong-Tie ® THA Hangers Supporting Suspended Joists.Engineering Letter
THA422 to Rim BoardL-C-THARMBD17THA422 Hanger On Rimborad Headers.Engineering Letter
Installation Guide for Plated-Truss Connectors (English and Spanish)WC-C-PTBI14WC-C-PTBI14 is an eight-page English/Spanish wall chart featuring product and installation illustrations for plated-truss connectors.
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- Uplift has been increased 60% for wind or earthquake loading with no further increase allowed; reduce where other loads govern.
- Wind (160) is a download rating.
- For single 4x2 top chord carrying members or single 2x nailers, the following THA hangers can be installed using 10d x 1 1/2" top nails and (2) 16d face nails with reduced allowable loads as noted: THA418/THA422: 1,415 lb. for DF/SP, 1,215 lb. for SPF; THA426: 2,245 lb. for DF/SP, 1,930 lb. for SPF; THA422-2/THA426-2: 2,345 lb. for DF/SP, 2,015 lb. for SPF. Loads are based on hanger installations at panel points.
- Face-mount installation loads are based on minimum of 2-ply 2x carrying member. For single 2x carrying members, use 10d x 1 1/2" nails into the carrying member and tabulated fasteners into the carried member, and use 0.80 of the table value for 18 gauge, and 0.68 of the table value for 16 gauge and 14 gauge.
- Min. Top Flange refers to the minimum length of strap that must be field formed over the header.
- For the THA 2x models, one strap may be installed vertically according to the face mount nailing requirements and the other strap wrapped over the truss chord according to the top flange nailing requirements (see drawing Typical THA29 - Top Flange Installation below) and achieve full tabulated top flange installation loads.
- Nails: 16d = 0.162" dia. x 3 1/2" long, 10d = 0.148" dia. x 3" long, 10d x 1 1/2" = 0.148" dia. x 1 1/2" long.
See other nail sizes and information.
|Part||IAPMO UES ER||ICC-ES ESR||City of Los Angeles||State of Florida|
|THAC422-2||No code listing: Please contact us for test data.|
|THAC426||No code listing. Please contact us for test data.|
|THAC426-2||No code listing. Please contact us for test data.|
ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction