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Re: Post-tensioned slab on grade

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Yes, it does sound like the voice of experience.  Harold, have you
encountered a maximum elongation for which heating the strand is still an
effective and safe way of relieving the stress?

>If it is unbonded. (Which it probably is)
>1.  Chip out a window exposing the strand.
>2.  Heat the strand in the middle to relieve the tension.
>3.  Cut the strand after the stress is relieved.
>4.  Re-tension and re-anchor the strand at the edge of the new opening.
>5.  Dress out the cut at the perimeter.
>Harold Sprague
>The Neenan Company