I am building my garage finally and in the one bay I am planning on putting a 2 post lift and want to see how everyone else installed theirs.

My plan for the lift is to dig out a footer the width of the lift left to right and build a rebar cage then have it filled with cement. The rest of the garage floor would consist of 6inch thick concrete. I am just wondering if that is overkill or is a good idea to prevent cracking or other problems. The heaviest thing I plan on lifting is my Chevy K3500 dully. Some people I have talked to say that will be more then enough some say its overkill. I just don’t want to crack the floor or have issues. Any thoughts or help would be great.

Thanks

Definitely go as thick as reasonably possible.
I cut my floor for my 2-post, and went about 8 inches deep under each post, with about 1 foot or more width at a minimum to the side of each post, and went 6 inches deep between posts.

I also did the rebar cage, as you are planning, but since I cut an existing floor, I also drilled rebar dowels horizontally into the existing concrete to tie both the old and new floors together.

Worked very well and no issues so far, nor do I anticipate any.

Actually, I feel sorry for anyone that may attempt to remove that portion of the floor!!