||10-10-2011 06:51 PM
Without a diagram, it is difficult to visualize exactly what you are doing. However, it is unusual in residential framing to connect two beams over a post, generally each beam rests on the post via a notch, and the beams are not connected, i.e. they are independently supported. By independently supporting the beams, you have a simple beam connection. If you actually connect the beams together over the post, you have an indeterminate connection, which leads to complex loads on the beams.
Beams that are simply connected have zero bending moment at the post, while beams that are continuous over the post experience negative moment over the post, which is not usually accounted for in standard design tables. I suggest you consider the previous suggestion of using a Simpson type connector, which will allow each beam to be independently supported. Of course, I am assuming you got the beams designed, hopefully you are not guessing at the required size of the beams. There are unlikely to be any standard tables for your design, so this leads to wonder, if you got the beams designed, why did the designer leave out the crucial detail of how to support them?