On Mon, 14 Sep 2015 13:49:26 -0700 (PDT), True North
wrote:

When I added an attached garage to my cedar Cape Cod style house in the burbs, I ran a 20 foot long 12 inch high I beam to carry the weight of a planned 2nd level play area for my boys. The plan was to burn a hole in the flange to accept a chain hoist for anything I would want to lift. Sold the house before I finished it.

I had a "beam trolley" in my house in maryland (steel ":I:" beam)
It was handy for lifting engines and such but that was not an option
here because there was no central beam.