loss of tension in post tensioned beam
loss of tension in post tensioned beam
(OP)
Hi
What are the symptoms of tension loss of post tensioned beams.
I have several beams to be checked for tension loss. in one of them there is a horizontal crack in the web, is this one of the symptoms of tension loss.
Thanks
What are the symptoms of tension loss of post tensioned beams.
I have several beams to be checked for tension loss. in one of them there is a horizontal crack in the web, is this one of the symptoms of tension loss.
Thanks






RE: loss of tension in post tensioned beam
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RE: loss of tension in post tensioned beam
Is the PT to the beams, UNbonded or bonded (grouted)?
What other characteristics are evident to the beams that necessitate "...beams to be checked for tension loss"?
I agree with rowingengineer, horizontal cracking to beam webs are not usually associated with loss of prestress, HOWEVER, if the tendons were incorrectly draped (sharp curvature over short lengths, for example) it is possible that horizontal cracking can occur during/shortly after stressing.
RE: loss of tension in post tensioned beam
Crack description would lead me to suspect tendon placement issue.
RE: loss of tension in post tensioned beam
BA
RE: loss of tension in post tensioned beam
A check on terminology here... An unbounded beam - is that one that was not bounced during placement?
Mike McCann
MMC Engineering
RE: loss of tension in post tensioned beam