Re: air compressor insallation

[Roger Gibbs <rgibbs@pacbell.net>]

In a college engineering course there was a slide projection talk given 
about a power distribution plant close to the epicenter of the 1971 
"Sylmar" quake.  I recall photos of 3/4 inch diameter anchor bolts with 
all of the threads sheared off.  These bolts had previously anchored a 
large transformer (about 4 feet cubed, maybe).   Lots of energy in a 
quake.  Restraining an air compressor during a quake ?  I would not want 
to be close to one during a 5.5 or greater !

-Roger