Another way to make a horizontal weight rack, is to knock-off what is commonly referred to as a “loading pin”.
Here’s an example http://www6.mailordercentral.com/ir…tem=13&mitem=14
I made mine using the following:
1/2” X 6” Pipe (threaded both ends)
1/2” Floor flange
1/2” X 3/8” Reducing piece
Total cost about $3. I’ve tested it up to 150 pounds. If you get to the point where you can hang that much from your unit, you have “issues”.