Steampunk or Gotham City style steel beams and supports

There's three models here. The beam, the support/base and a connecting plate. The beam slides into the base - glues in place with CA or epoxy. The plate is designed to glue wherever beams met for a look of a bolter support. I've scaled this down to 20% and printed on my resin printer or 50% to 100% on the filament printer.

In my photos, those are the resin printed ones. I snapped one in two so they look like broken beams. Roughed up and painted to look rusty.