Bruce - I found this by searching the archives where there is a wealth of info:

"From the National Association of Home Builders Performance Guidelines:

Basement Walls - Concrete block or poured concrete
Walls shall not be out of plumb greater than 1 1/2 inches in 8 feet when measured from the base to the top of the wall.

Structural - Wood frame wall is out of plumb
Wood framed walls shall not be more than 3/8 inch out of plumb for every 32 inches in any vertical measurement.

Structural - The wall is bowed
All interior and exterior walls have slight variances in their finished surfaces. Walls shall not bow more than 1/2 inch out of line within 32 inch horizontal measurement or 1/2 inch within any 8 foot vertical measurement.

Hope this helps..

Jeff Euriech
Peoria, Arizona"