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distance by total station is longer than tape

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Mapman
(@mapman)
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>... Linear co-efficient of the expansion of steel is something like 6 x 10-6 per foot I believe, but that has been a lot of years since I worked that one.
>
> Someone correct me.;-)

Guess that's me.
I was close but not quite there. It was 6 x 10 -6 per in/in per degree F.
Convert that to tenths/ft.
Then it becomes: 8.64' x 10 -5(.0000864') per ft for each 1°F temp change.
Give or take a few billionths of a foot per degree.


 
Posted : August 22, 2013 2:34 pm