50x50 wargaming floor or wall tile test pieces

a few stl files of ideas for war gaming floor tiles could even be used as walls??

pretty basic but these are just a couple of ideas im playing with for the Armies on Parade game board competition at GW that our war gaming club is taking part in

the idea is these will serve as a base which we will then build up more detail on using some wire and small pipes for added detail

Update 9/2/2016:

Up loaded a base file without wall as requested just took me a while to find it!!

Upd