Try here first
Buy the book here: Principles of Protection
PRINCIPLES OF PROTECTION (P.O.P.)

U.S. Handbook of Weapon Fundamentals and Shelter Engineering Design Standards
If you are planning to build a shelter to protect yourself, your family and friends and/or your community, and are looking for one of the most comprehensive sources of essential information available today, then P.O.P. is the book for you. With more than 400 pages of charts, diagrams, specifications and statistical data, you would have a very difficult time locating a more complete and detailed reference resource.

Try here first
Buy the book here: Principles of Protection