Quote:
Originally Posted by Siri
Emphasis mine. Just to be clear, are you agreeing this is legal? Given that robust mounting is legally required, is there something against steel or largeness? We use steel to secure our brackets to the wood.
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In 2012, at the recommendation of a Lead Robot Inspector/Mentor on our team we used a steel plate-- about 28" x ~3" bent into a 'J' shape that ran the length of the bumper and engaged our frame member. It passed inspections at regionals. This included an inspector named Al, who you might be familiar with

The entire length of the steel was part of making a very robust attachment system.
But adding steel (or any other material) with no purpose other than adding weight or strengthening the bumper plywood would be a no no, I believe. The method we used had the primary purpose of attachment to frame, and it incidentally added weight and bumper rigidity.