no offend (assuming you didn't have their permissions! I sure hope mr. JL doesn't mind if he found out) but please becareful when using other people's picture as some will have zero tolerrance about this issue.
back to your topic:
I'm not an advocate for indoor housing but I guess some would not want to have their prized animals stick out at risk, i would suggest if you could have it build "half and half" meaning the other half allows your animals access to real UV rays (a FREE service from Mother Nature!) get the picture? here's the run down:
_the basic "tort-table" blueprint by Dr. Fitzpatrick can be found on www.tortoise.org so take it from there and make your own.
_for heat/light and fake UVBs, there's a discussion a few posts down below about the compact bulb you might want to try out yourself.
_composite plastics: could be your best bet, (unless you are one of those who loves to change they cars more often than they underpants, in that case: wood is your chance!).
there are 3 brands of composite plastics manufactures that I'm aware of:
1_Fiberon/Veranda: their standard stocks are heavy (approx. 1" thick, 6" wide, 8'-12' or 16' long) you can build a tank out of it (battle-tank that is), the problem is most Home Depot /Lowe's only stock the "PINK" colour...Hmmm...unless you keep a PANTHER that'll be perfect... 
2_TREX: I think they only interested in those who build a giant fortress by the cliff by looking @ their ad...not much into the little guys... 
3_ION (Canadian) _ THIS IS THE BANGFOR THEBUCKPERSQUAREEINCH: I got some sidings from Home Depots through special order last year (1/4" thick, NINE INCH WIDE! 16' lenght) for about $20 a piece. the deep sandstone colour are exellence, your mediterraniance or russians just blends in like magic.(I still had to buy the 1"x1" Fiberon stocks to make the frame, though!)
BE CAUTIOUS about composite plastic or any inflamable materials when you installs the heating elements, try to shield the "HOT" zone with sheet metal/alloy...to give it a good SAFE radius.
Happy Cranking 