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PT Flat Plate Cracks

PT Flat Plate Cracks

PT Flat Plate Cracks

(OP)
For a post-tensioned flat plate condo, I am coming up with a list of allowances that will include allowance for epoxy injection of cracks.  PTI has a publication "Restraint Cracks and their Mitigation in Unbonded Post-Tensioned Building Structures", that estimates the length of cracks requiring repair at .009 feet per square feet of slab area for slabs up to 3 levels above the foundation, where restraint issues are the most prevalent.  However, I am thinking that repairing the cracks might be a lot more appropriate for structures such as garages, where water-tightness is important.  My question is, do you encounter a lot of cracks in PT flat plate condo structures, and do you generally do anything about them?  

RE: PT Flat Plate Cracks

In none of the PT projects I've been involved with has cracking been an issue.  With a condo project, I would think that any of the cracks would likely be obscurred by finishes.

Dik

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