Quote Originally Posted by designseeker View Post
Cantilever of decks:
dont know about Canada but in the US that is not the case.
I typically overhang decks 16" beyond a girder.

You may be thinking of the rule of thumb about load bearing
walls being offset no more than the depth of the joist.

http://westchester-architects.com
Actually the length of a cantilever could vary according to the size of the joists (2x6, 2x8, etc), their length, their connection to the header and the location of the posts.

I've seen cantilevers extend more than 16" beyond the beam/posts... and they are still standing.