I have basically a simple question. When is the crack too big?
This is a new home construction with post tension slab that has not been pulled tight yet. The crack has expanded from hairline to being able to slip a quarter sized washer in it. Builder says "don't worry" and look after it's tensioned. My issue is I expect "hairline" cracks but this looks to me to be full thickness and across the entire slab. In effect making it two slabs and now pulled together with post tension cables. I'm sure they can reduce the crack, however, this ain't bone and that crack won't heal. It will always be there and this slab will always be two pieces. The crack is also straight through where a cable is so how in the world can that cable be pulled tight? Wouldn't it just act as a wedge to drive it further apart? Also, I know builders want to frame immediately after the pour but doesn't having the frame nailed and bolted to the foundation negate the effect of putting tension on the cables? It seems you would be pulling against the framing which is fixed in place with the crack where it is. If it's pulled tight it just tweaks the level of every stick they nailed and nothing is as square as when it was installed. Is this poor workmanship just too common to worry about? What can/should be done? At the very least should it be sealed or have an some leveler poured over the cracks and let it cover the areas that are still exposed?