I don't know any specifics. My guess, it depends on how strong a
pulse, and how nearby. However, the rebar would help dissipate the
pulse.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Jim Elbrecht" wrote in message
...


"The Subterranean Fortress literally goes down 4 stories deep. Because
of the depth and the thickness of the cement the computer room is
Electro Magnetic Pulse (EMP) wave proof."

How deep or how much concrete does one need to EMP-proof stuff?

Jim