Well this is my personal little uncompleted fort... as you can see, its on sf_tower_top_b1 again due to its unlimited props,
Overview of uncompleted fort
Close up of layering
Scaffolding
First and Second(interlocking) Layers
Third Layer
Fourth(Final) Layer
spent about 2hours placing most of the plates proper, should give the destabilizers a hard time in pulling off the plates as the outer layer is actually being 'body-pushed' as tight as possible, thus its actually interlocking each other
2nd layer is actually an interlocking of 2 or more long planks together... and the bigger plates are covered over at regular intevals, making the stripper having to strip off the 3 or 4 third layer before reaching the long planks and thus reaching the final defense, of course the flag itself will be of another room, making it a total of 5 layers instead of 4, but i didnt have the time to finish it.
Moreover, this is the fort that i'm building halfway and managed to make a savegame out of it, thus i would be continueing on this as soon as i get the damn door of prop spawn open during build mode...