Beam Supported by Shear Tab – Balloon-Framed
Beam is connected to wall panel with a steel shear tab welded to steel plate. Beam is connected to shear tab with bolts or welds. Plate is connected to face of wall panel using partially-threaded screws.
Purpose: Transfer of vertical load from steel beam to mass timber wall panel.
- Capacity of the connection is dependent on the screw connections to the wall panel and the capacity of the beam to shear tab attachment.
- Connection is capable of transferring out-of-plane loads between wall panel and beam where no diaphragm is provided.
- Wall panel may be routed at steel plate for flush finish.
- Consider horizontal slotted holes at shear tab connection for increased constructability and thermal movement.
- Elevation control of shear tab is critical. • Constructability may depend on connection at opposite end of beam.
- Beam cannot be disconnected from rigging until connected to shear tab.
- With balloon framing, multi-story walls can be erected rapidly; however, constructability can be affected by the need for temporary bracing of walls.
- Class 2
- Load Medium
- Cost $$$
- Constructability Moderate
- Fire Rating III