So when we finally got to fabricating a canopy for a project we found that we seemingly had over engineered it. So thanks to Aaron Pambianco for consulting his trusty structural bible we came up with a testing solution as follows.

Load up one of the canopies with 580lbs of steel and test it’s deflection against an unloaded canopy, with only a 1/4″ of deflection we now don’t have to weld on 3″ flat bar to the top of the canopy.