Jerry,

You of all people surprise me.

Everyone knows when reading a code book what the word 'shall' means.

When reading your attachment, there is a big difference between 'Plan' and 'Shall'.

Installation instructions usually include "must"; as in
"there must be a 12 inch rise before any bends can be installed".

I take your instructions as, "plan on 12 inches, but if you don't have it, no problem."

Or take Gunnar quote, "whenever possible" doesn't mean MUST.


Darren