ballantyne
ballantyne, the best source for the construction design you week is to go to your local Construction-Contractor book store. They have hundreds of books on how to construct anything you might want.
I don't know where you live, but this one in Florida might give you a clue:
http://www.contractorsbookstore.com/allprods.php
Look in your phone book to find the closest contractors' book store to where you live. Plan on spending an hour or more browsing through their books. The sales clerk can direct you to books having plans or requirements for building portable interior walls.
You can use Google to ask if there is a store in your city.
Let us know if you find what you want.
BBB