HVAC

Ron Nossaman RNossaman@cox.net
Sat, 25 Jan 2003 11:22:48 -0600


Just one thing. I'd like to point out that the 70°F @ 17%RH and below that 
we experience this time of year puts wood MC below the 4% level used in the 
making of purely compression crowned soundboards. 70°F @ 12%RH puts that 
soundboard MC below 3% - at which point we add nearly 1,000 pounds of 
string tension pulling it up 30c to 440 so plenty more compression damage 
will be done when the humidity goes up to 80% in the summer, making the 
soundboard just under 16%MC.

You can hear those little Spruce fibers moaning in pain if you listen real 
careful. Too bad the folks who build these facilities can't.

Ron N


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