We recently had a 5,696 square foot post tension slab poured here in North Texas on 2/14/2014. As of today, March 3 no one has come back out to stress the tendons in our slab. Today I noticed, what I (the homeowner) consider, severe cracking in the slab. Now I understand that there is some cracking that can happen due to shrinkage and the fact that the PT cables are unbonded to concrete. I accepted that. But what I am witnessing today is very long cracks (some over 50’ in length) that go across the house, through walls, to the porches to the edge of those porches, and then down vertically beyond the border between the soil and concrete. There are two of these cracks specifically that I am concerned about.
I have had to kick and scream to get my contractor to get someone out here to tension these cables. After stopping payment on the concrete subcontractor’s check for the slab, they seem to be snapping into action. But now, I am concerned we have a serious issue. I am bringing an engineer to the site to see the cracks before they tension because I am concerned they will not disappear upon stressing. I am also plotting every crack on a copy of my blueprints so I know where all of them are at.
At this point, I am not sure how to proceed. I have even told the contractor that, depending on what the engineer said, he may be required to start the home over from scratch with all the costs of demo and removal of debris on his dime. I’m sure it will improve upon tensioning but it should not have sat this long.
I don’t have sufficient privileges here on this forum to post photos but have photos. Any advice you guys can offer? I have seen posts here by Jeff Pope that seems very knowledgeable about PT foundations and would love his take on this.