What is the maximum allowable crack size dimension in a post-tension concrete slab before it is considered a "structural" crack, in Arizona, USA? Is there a certain standard for this. I have tried looking for it in my state's ROC rules but they have nothing for what is considered to be a "structural" crack in a post-tension concrete slab. It's hard to give warranties without having specific measurements and standards to abide by.

Edit: This is for a on-ground slab with an ABC foundation

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    $\begingroup$ Please edit your question to include geographic information. Anything "allowable" is defined by codes, but these vary by country and (in some countries) even by state. $\endgroup$
    – Wasabi
    Jul 24, 2019 at 0:44
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    $\begingroup$ If you are giving "warranties" then what would you consider safe for a structural member? $\endgroup$
    – Solar Mike
    Jul 24, 2019 at 6:33
  • $\begingroup$ @SolarMike It's 5-inch post-tension slabs for outdoor sport courts, so I wouldn't consider the slab to really have any significant load bearing requirements, since nothing is built on top of it. I think most companies out there offer a 10 year structural damage warranty on their post-tension slabs. However, I don't see any uniform crack size industry standard in which the cracks in the post-tension slab would make it a structural damage. I worked for a company that also built slabs for outdoor courts, but they never explained what "structural" cracks are in their contracts. $\endgroup$ Sep 2, 2019 at 17:44


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