Beam bears in a notch at top of column. Beam is connected to top of column with partially-threaded screws.
Purpose: Transfer of vertical load from beam to column.
Capacity of connection is dependent on perpendicular-to-grain capacity of the beam.
Where the connection design requires a tight connection, installation of connectors should draw the connection tight.
Reduced section of column adjacent to notch may be susceptible to damage during shipping and erection. Fully-threaded screws may be used to reinforce the notch. See MTC Solutions’ ASSY Screws as Tensile Reinforcement in Notched Beams.
Alignment and tight fit may be difficult to achieve during construction. An erection aid can assist in alignment during installation.
It is recommended to detail the top of the column lower than the top of the beam to account for differential shrinkage between beam and column.
Consider eccentricity of beam bearing on column where necessary.
It is recommended that screws installed in beam and column are slightly overdriven to account for beam shrinkage.
Deck not shown for clarity. Beam may require bracing for lateral-torsional buckling.