I was looking for plans on building a viv. I found this one, with a low build cost and very easy. Just thought I would share with you all for your future builds. I like this one with the exception of the sand and air vents. I am sure as it is built there are other things that I will change.
http://708designs.netfirms.com/customcage/customcage.htm
http://708designs.netfirms.com/customcage/customcage.htm