The THJM is a non-welded hanger designed to carry radial-end jack framing and provide optimal efficiency for those multi-plane, angled bay roofs over breakfast, study and library alcoves. The unique patent-pending design of the THJM accommodates 2x4 girder bottom chords and uses our Strong-Drive® SDS Heavy-Duty Connector screws for easy installation with minimal fasteners.
The THJM hangers are designed for installation with 1/4" x 3" Strong-DriveSDS Heavy-Duty Connector screws that are included with the parts.
The THJM2-4-SDS3 is designed for four incoming jack trusses with the outer jacks being 22 1/2° from the face of the girder and the inner jacks being 45° from each other and the outer jacks.
The THJM2-5-SDS3 is designed for five jacks coming into the hanger at 30° from the girder and each other.
Tabs on the seats of the THJM assist in the placement of the jacks and also include obround holes for optional slant nails (0.148" x 1 1/2") when increased uplift is required.
Use all specified fasteners; see General Notes
Each carried jack truss requires one 1/4" x 3" Strong-Drive SDS Heavy-Duty Connector screw installed into the bottom chord through the bottom of the hanger seat
For installation on girders with 2x6 or 2x8 bottom chords, install one additional 1/4" x 3" Strong-Drive SDS Heavy-Duty Connector screw in the triangular hole on each vertical strap
Install two 0.148" x 1 1/2" slant nails in the obround holes on each of the seat tabs to achieve the additional uplift load noted in the table footnotes
Tabulated loads are the total allowable loads of all carried members combined; the load on any single carried member shall not exceed 25% of the total published load for the THJM2-4 or 20% of the total published load for the THJM2-5.
Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
A minimum two-ply carrying member is required for the tabulated loads.
Truss chord cross-grain tension may limit allowable loads per ANSI/TPI 1-2014. The optional triangle holes may be used for installation on 2x6 and larger carrying members, for a total of 10 fasteners into the carrying member, to resist cross-grain tension forces when no other mechanical reinforcement is available.
Tabs on the seats of the THJM hangers have obround holes for optional 0.148" x 1 1/2" slant nails (two per carried member) when additional uplift load is required. Total allowable uplift with the optional 0.148" x 1 1/2" slant nailing is 970 lb. (DF/SP/SPF/HF).
Strong-Drive® SDS Heavy-Duty Connector screws may be installed through metal truss plates as approved by the Truss Designer, provided the requirements of ANSI/TPI 1-2014, Sections 188.8.131.52 and 8.9.2 are met (predrilling required through the plate using a 5/32" bit maximum).