I am building a picture frame deck. In order to support the picture frame edge planks that are parallel to the joists, it is recommended (by TimberTech anyway) to install two more joists next to the edge joist, with blocking between the 1st and 2nd joists, as shown in the below illustration.
I need to install a railing around the deck, and I'm not sure where to mount the 4x4 rail posts with this design. The 2nd and 3rd joists would be in the way. The only place I can see to put the posts would be between the 3rd and 4th joists, but doing that would put the posts so far in that I'd lose like 9-11 inches of my deck space on each side, as they'd be outside the railing.
How is this typically done? I can't seem to find the answer anywhere.