Rust on Strings/Thumper

[Richard Brekne]

That was the result of WW II. They had to use a lesser quality betong 
mix in the cement... caused it to dry out much more thouroughly and form 
a more or less antihygroscoptic barrier around each cell at the 
molecular level. Humidity and condensation simply gets repelled. Back 
side is that concret from that period is quite brittle. Why do you think 
nearly every building built with concrete between  1939 and 1947 has 
crumbled or been torn down... or both ?

Seriously !! :)

RicB

Joseph Garrett wrote:

> Thumper said: "Pianos should never
> be kept on them if there is any doubt as to whether
> they have a liner beneath. Unless, of course, you wnat
> your pianos to fall apart."
>      Thump
> 
> Thumper,
> I live in a cinder block house. It was built in the early 1940's. You can
> believe there is no "vapor barrier" under the "slab". Please explain, to me,
> why my shop humidity doesn't vary more than 10% year round.<G>
> Best Regards,
> Joe Garrett, RPT, (Oregon)
> Captain, Tool Police
> Squares Are I
> 
> 
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