Division 15 and Division 16 specifications from a consulting firm would help. You may try doing an internet search to find some of these specifications on line. I've noticed over the years, the goverenment (DOD) and Corp of Engineers may have some outline specs online available for information...
Try a software called ComCheck-EZ 3.0. This software is based on ASHRAE 90.2. It will help determine if econonmizers are required for your application.
The software is free. Google search it and download for free.