Another variant (once again for 1/2" EMT) was to drill out one of the step rivets on each side, and replace it with a 1/4 - 20 bolt
DO NOT do this if there is any possibility of an OSHA visit to the job.
Repairing / Painting / Modifying a ladder in any way can result in fines.
You should see our company dumpster and all the cut up ladders. Anything at all wrong with the ladder and it ends up cut up and thrown out.
