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concrete finish
Thomas A. Sebring

Concrete Finish
The final inch of the telescope pier was precision cast by Baker Concrete, Inc., of Houston. It's a special blend of trap rock and silica cement designed to finish well, to be quite hard, and to exhibit good long-term dimensional stability. When surveyed afterward, the pier was flat to better than +/- 0.050 inches over the whole diameter.



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4 October 2012
Astronomy Program · The University of Texas at Austin · Austin, Texas 78712
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