Beam fails with Control Summary showing Concentrated Load(B0)

Beam fails with Control Summary showing Concentrated Load(B0) or (Bn).


This indicates that a large load from above has been applied to a conservative square area and may be causing the top of the member to fail in stress perpendicular to grain.
A 3.5” wide contact surface along its top edge is assumed, based on a worst-case 2x4 wall plate or 4x4 post.  BCI® / AJS® joists have a fixed capacity for any concentrated loading condition, while rectangular products are analyzed by a compression perpendicular to grain stress check.
This load will need to be evaluated by a qualified designer based on the actual square area applied to the top of the beam using the actual product design values.

Here is a link to the technical note (GE-23) from engineering:
https://s3-us-west-2.amazonaws.com/bcframer/Other/GE-23_Vertical_Load_Transfer_Over_Bearings.pdf

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