The manufacturer of the poles/fixtures should be happy to provide you with guidelines and/or illustrations that you can present to your AHJ for approval/modification. They should also provide you with a template and the hardware (l-bolts) required for their poles (sans the rebar cage and concrete).
HotLine1 provided you with great guidance, as Ruud is probably my favorite lighting company. They are not only helpful and polite, they provide a very good product and assistance upon request.
Here's a HUGE bonus: they deal with contractors DIRECT. This saves a ton of time and money when you don't have to get quotes, delivery, call backs, etc. from a supply house as a middleman. You can quote a client right out of their catalog, which is impossible with most lighting companies.
Here's their web site:
http://www.ruudlighting.com/Good luck!
