The United States Department of Energy maintains a page of standards involving physical security at http://www.oa.doe.gov/guidedocs/0009pssig/0009pssig.html . The page is a partial list of the standards Department of Energy inspectors use when assessing the physical security of nuclear weapons sites and components . If it s good enough for them, it should be good enough for you.
As you might expect, the United States military has a wealth of useful operational security information. Try the OPSEC Primer at http://www.defendamerica.mil/articles/a021202b.html.
The United States Army publishes many of its unclassified field manuals in print and on the Web. FM 3-19.30 deals in depth with physical security threats, including forced and covert entry. You ll learn how to use barriers, lighting, and inspections, among other things. Get it from http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/3-19.30/toc.htm .
Jane s has an interesting directory of physical security specialists and products, ranging from architectural armor to harbor protection systems and security bunkers. Check it out at http:// fasttrack .janes.com/janesdata/ft/2572/2743/ .
Fennelly s Effective Physical Security (Butterworth-Heinemann, 1997) is a recommended text on specifying, buying, and using physical security equipment, from fences and lighting to locks and access controls.