Originally Posted By: roconnor
This post was automatically imported from our archived forum.
I agree with Jerry that just looking at the pics the cracking does not appear to be a big deal, but ya have to look at the whole install and get a “feel” for what is going on, particularly in new construction.
You have to consider things like what the soil conditions are, and when that crack occurred. Did it show up right after the slab was poured, or just recently? Is there more than one crack, but just not as visible? Does it run directly across the slab, or possibly run across a corner? These things make a difference.
It's hard to tell, but it does not look like there is steel mesh (WWM) in the slab. Not that it's a huge deal, but it makes packing the soil used to fill the hole and proper patching that much more important. With small holes in thin slabs it is sometimes very difficult to drill in dowels, so sloping the edges inward so the patch acts like a cork can be done.
In addition to the other things Jerry mentioned, it would also be important to adequately patch any vapor barrier below the slab so moisture cant work it's way up ... particularly in areas with glued on tile floors.
Also consider hiring a qualified HI, PE, or RA to perform some periodic inspections during construction for you. It's well worth it, and now would be a good time to bring someone in before the concrete and framing is covered up.
(PS ... put a return between each one of you pics so they line up vertically ... then people can see them and the posts easier ... ![icon_wink.gif](upload://ssT9V5t45yjlgXqiFRXL04eXtqw.gif) )
Just my 2-nickles
Robert O'Connor, PE
Eagle Engineering ?
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NACHI Education Committee
I am absolutely amazed sometimes by how much thought goes into doing things wrong