Approximate tensions?

[Frank Weston]

Tension in pounds for steel music  wire is given by the formula:  T =
(d*50.65)^2*(F*L*.00095)^2 where d is diameter in inches, and B is % of
breaking strength, F is the frequency in Hz, and L is the speaking length
in inches.  Breaking strength is typically between 30 and 66%.  Typical
tensions at A440 are: monochords--200-290 lb.., bichords--160-235 lb..,
trichords--140-200 lb..  Choose your numbers and do the math to get tension
for any set of parameters.

Merry Christmas,

Frank Weston - Why yes, I do happen to have a degree in engineering.

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> From: BSimon1234 <BSimon1234@aol.com>
> To: pianotech@ptg.org
> Subject: Approximate tensions?
> Date: Monday, December 22, 1997 9:40 PM
> 
> For my own information:
> 
> Average total tension of normal piano at A440 is____?___lbs.
> 
> Average total tension of normal piano when  50 cents low =_____?____ lbs.
> 
> Average total tension of normal piano when 100 cents low=_____?____ lbs.