Our Roof Decks are designed to fit perfectly between Cross Bars at 34” centers. One could arguably orient a Roof Deck 90 degrees for a lesser center to center but they’d have to drill their own holes in the Roof Deck.
Pay attention to conflicts from roof fans and rooftop air conditioners.
We know we keep talking about the big guy but he's a great test subject. And, yes, at 235# he can stand on these too and they do not yield. Also, be careful up there - it's a big fall. OSHA would say you should be strapped in.