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RE: Post-tensioned slab on grade

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Byron's suggestion is good, but will only work with unbonded tendons.  OTOH,
if the tendons are bonded, hakuna matata.
	-----Original Message-----
	From:	Byron Benson [SMTP:bbenson(--nospam--at)uzuncase.com]
	Sent:	Thursday, November 05, 1998 8:32 AM
	To:	seaint(--nospam--at)seaint.org
	Subject:	Re: Post-tensioned slab on grade



	>We recently built an 8" thick post-tensioned slab on grade , with
	>overall dimensions 120 by 90 feet. The active reinforcement is 1
strand
	>with 1/2" dia. every 2 feet, in both directions and placed in the
middle
	>depth of the slab.
	>Now the owner needs two openings of 3 by 8 feet along the edges of
the
	>slab.
	>I am worried  about cutting the tendons to make room for these
openings,
	>because I'm not sure if the release of energy when I cut them may
damage
	>the slab. Does anyone have any suggestion ?
	>
	>
	>Juan Carlos Gray
	>
	>
	There has to be an anchor that is made specifically for re-anchoring
tendons
	that need to be cut.  That way, you could expose the tendon beyond
the
	opening, place a new anchor and wedges and THEN cut the tendon.
Check the
	PTI manual, it has lots of information on the various products
available.
	If nothing else, it lists post-tensioning companies that you could
call for
	advice and/or products.

	Byron