I have a newer 2 story floathome, 2x4 construction, which at the current time has a 6' x 20 foot balcony. The balcony is attached at the ledger board and 4 vertical 6x6 supports that rest on another 6x6 that sits on the base of the float platform (think floating subfloor) about 2' from the edge of the house. So, at present, it is cantilevered off these 6x6 supports with the wrong ratio of 1:2. Corner vertical supports could not be done as the deck extends over the water. Pretty scary.
We are trying to change this deck from " scary" to "ok, but not code". At the same time, we want to use the two feet of float that currently is blocked by the current vertical support 6x6's for a 2" access walkway under the deck. We are hoping to move the 6x6 supports back to the side of the house and support the deck with 45 degree 6x6 braces against these 6x6's (which will be attached to the house). And of course, we would like to ideally do this about 4 feet out on the decking (with another 6x6 or metal bar running perpendicular to the stringers for support) so the braces are above our heads when we are walking on the float below. We have also come to the conclusion that custom steel brackets will be required.
I can only find 2 examples of something like this ******-and one was used as an example of what must never be done. Can it work if we put the 6x6's against the house to add strength to the 2x4 house to take the weight? Does the 45 degree supports have to be out to the corner? Are we thinking about this all wrong? Any advice would be muchly appreciated.