On 4/9/2014 3:07 AM, Leon wrote:
Martin Eastburn wrote:
Good example. I used to calculate the 'increase of diameter' of
a band placed around the world. It was set up to put a tight belt
and then add a 12" extension of the band. Question - how high would
the belt rise over the earth... ?

Lesson - just leave a little room for wood expansion.

Martin

On 4/5/2014 3:45 PM, woodchucker wrote:
This guy Jack Houweling puts it in perspective.
https://www.youtube.com/watch?v=11FS...em-uploademail

Geez I knew it moved, but when you see how a trapped wood movement can
appear it's remarkable.



I recall that question. I never could really believe the answer that came
with it. For perspective on the answer that I heard I compared the result
of adding 12" to a man's belt. Oddly the earth answer was greater than the
mans belt example. I highly suspect that the earth answer that I heard was
missing some digits to the right of the decimal point.
Basically you are adding 1/12,672,000 to the diameter in the earth example.



Hummmmmmm Seems to be just shy of 4" added to the radius.