Used primarily on plates and floor systems, this corner joint uses a mortise and tenon on one plate (red) and a tusk tenon on the opposing plate (purple). The opposing plate (purple) gets housed onto the plate for bearing. It is important that the plate bears on the post and not the tenon. To account for timber shrinkage it is recommended that you oversize the bottom of the mortise of the tusk tenon. A couple of pegs in each joint secure them.
To help eliminate joinery conflicts there are two different sizes of knee braces: a 36″ (aqua) and a 32″ (green). We still had to clip the 32″ brace tenon a little at the bottom.