Adobe Illustrator Maximum Canvas Limitation?

Is there any way to up the size of the 227 inches X 227 inches maximum canvas in Illustrator?

I am doing a couple of scale drawings that are easier to scale down from inches. ie. 1" scaled down 8.333 percent gives a 1" - 1'0" print size.
I know I could just buy a cad program but I already own Illustrator CS.

Thanks in advance for any help.

imurf