I occasionally volunteer to build a project for a local brain injury group. Currently I am designing a “coffee bar” for their main meeting room. So far, so good but this time they found a counter top company that offered to donate a granite top for the bar. I am not a professional and have never dealt with granite before. I guess the one thing I know is that it is heavy.
I would appreciate it if some of you knowledgeable gentlemen would take a look at the attached drawing and offer an opinion as to whether the structure is adequate to support the weight. The materials being used are ¾” poplar for the stiles, rails and nailers and ¾” ply for the panels.