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03.B - Beam Bears on Steel Bearing Seat with Knife Plates on Column

Beam Bears on Steel Bearing Seat with Knife Plates on Column

Mass timber beam is connected to mass timber column with a custom-fabricated steel connection consisting of bearing plates for both the beam and column. Knife plates are provided in the steel connection at both bearing plates. Beam bears on bearing plate and is positively connected to steel knife plate with dowel-type fasteners. Connector bears on column with stiffened plate and is fastened with partially-threaded screws.

Purpose: Transfer of vertical load from beam to column.

Design Notes

  • Capacity of connection is dependent on perpendicular-to-grain bearing capacity of beam at bearing plate.
  • Designer must account for eccentricity between load and reaction.
  • Designer should account for fit of material above. CLT is not typically notched to accommodate connections.
  • May be desirable to extend bearing plate beyond knife plate to cover kerf in beam for knife plate.
  • See Table 8 (8-4): Beam Bears on Concealed Steel Bearing Plate with Knife Plate for method of fire rating this connection.
  • Deck not shown for clarity. Beam may require bracing for lateral-torsional buckling.
Class
Class 2
Load
Load Medium
Cost
Cost $$
Const.
Constructability Moderate
Fire
Fire Rating III

Related Mass Timber

Beam Bears on Steel Bearing Seat with Knife Plates on Column

Mass timber beam is connected to mass timber column with a custom-fabricated steel connection consisting of bearing plates for both the beam and column. Knife plates are provided in the steel connection at both bearing plates. Beam bears on bearing plate and is positively connected to steel knife plate with dowel-type fasteners. Connector bears on column with stiffened plate and is fastened with partially-threaded screws.
03.B - Beam Bears on Steel Bearing Seat with Knife Plates on Column