I know about Deb's PDFs for the mice rack and rat rack, but does anyone have anything for the thicker bus/concrete tubs?

I want to make a few racks, because we are moving from the townhouse into a smaller apt and will not have the garage like I do now, so there will be no space for 10g tanks everywhere.

I looked through the caging and DIY stickies and found the large tub set-up and the mice racks, but no rack DIYs for the thicker tubs.

Hopefully somebody can point me in the right direction, I would like to build one this week.