I made this to support my floating foundations that I used to lay down my train tracks. Floating foundations work, but the don't look great, so I made this support. For higher structures, this blueprint is meant to be paired with another of my blueprints which will be linked. There IS some awkward looking clipping, but for the life of me I couldn't do it any other way while also looking good.

https://satisfactory-calculator.com/en/blueprints/index/details/id/11203/name/Support+Structure+Extension