Shop space and race cars have a lot in common. When I was dirt track racing the rule of thumb was "Build it three times as strong as you think it needs to be- - - -and try not to be too surprised if it breaks!" The same rule probably applies to shop square footage.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!