G Henslee wrote:
Snip
Different jurisdictions can, and often
will, alter the requirements of any national code to suit their
perceived needs.

You both seem to leave out one important element to that. If a
jurisdiction adopts a code they can alter it to make the code
requirements more stringent. Not less.

That is not universally true. Virginia for instance, is a min/max
state. I such states no modification of the adopted state wide code is
permitted. There are also several states that have not adopted any
State wide codes so the local jurisdiction is free to modify a model
code in either direction including to make it more lax.
--
Tom Horne