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Beam Bears on Steel Bearing Seat with Side Plates (Bucket)

Wood beam is connected to wood girder with a custom-fabricated steel connection consisting of a bearing plate and steel side plates (bucket) with dowel-type fasteners into girder. Beam bears on seat and is connected to side plate with dowel-type fasteners.

Purpose: Transfer of vertical load from wood beam to wood girder.

Design Notes

  • The capacity of connection is dependent on the screws, lags, and/or bolts in shear and perpendicular-to-grain bearing at the seat.
  • Face-mount connection is shown; top-mount connection is possible.
  • The capacity of this connection can be increased by installing screws into girder at an inclined angle.
  • At dowel connection, designer should account for shrinkage of beam with appropriate dowel location and spacing. See APA EWS T300 Glulam Connection Details Construction Guide for additional information.
  • Dowels and connecting fasteners should be spaced per NDS Chapter 12 guidelines to help minimize beam checking due to constrained shrinkage between the fasteners.  Dowels and connecting fasteners should be located outside of the neutral axis of the beam, opposite of the load path to avoid tension perpendicular to grain loading of the beam.
  • Deck not shown for clarity. Beam may require bracing for lateral-torsional buckling.

Other Applications:

  • Table 9: Mass Timber Beam Support at Mass Timber Column
  • Table 10: Mass Timber Beam Support at Mass Timber Wall Panel
Class
Class 2
Load
Load Medium
Cost
Cost $$
Const.
Constructability Moderate
Fire
Fire Rating III

Beam Bears on Steel Bearing Seat with Side Plates (Bucket)

Wood beam is connected to wood girder with a custom-fabricated steel connection consisting of a bearing plate and steel side plates (bucket) with dowel-type fasteners into girder. Beam bears on seat and is connected to side plate with dowel-type fasteners.
03.A - Beam Bears on Steel Bearing Seat with Side Plates (Bucket)