I am designing an addition for a client and he would like a balcony on the upper level. It is a 24' wide addition so the floor joists will be spanning 12' from a wall in the middle of the addition to the exterior wall. He would like to go 8' out but the cantilever distance would be greater than half of the interior joist span.
How do you analyze the joists if he were to install a diagonal member from the exterior wall to the middle of the 8' cantilever? Similar to the diagonal piece in the attached image.