
This is a side view of a beam that was in a shop I worked in, A and C are supported by pillars about 6 feet from the ends.
B is a 10' beam connecting A and C, bolted with steel plates on both sides.
Several of the other works insisted that the extension should have rested on the tongues of A and C rather than being hung from them.
Some of us argued that this was actually the proper way as the tongues are stronger in this configuration and would be less likely to split under the weight.
Thoughts.