How do I create a floor such as the ones in Unreal Tournament alpha?


I’m using the Unreal Tournament Editor to learn the basics and fundamentals of level design. I’ve been working on this map on and off in my spare time. I’ve learned a lot doing so, but I’ve hit a stump that’s preventing me on moving forward… I need to know how they created their floors in their maps such as the ones shown in the pics I’ve attached. Just for showcase purposes, I’ve tiled together basic floor meshes, but it’s obviously not ideal nor logical for the final build… If someone can help me, or at the very least direct me to a tutorial on how to do this, I’d greatly appreciate it!

I’ve also attached some snaps of the map I’m making… It’s far from complete, but I hope you enjoy…

Thanks for your time,