Here is a close up, unfortunately, it is a little blurry, but the measurement is roughly 8 - 1/4". As you can see, the bottom is bowed a little bit, between 1/4" and 3/8".
As I said though, all this weight is hung in the center, is about an extra 5-6 lbs greater than what is possible with water, and the sides only bowed just a touch.
All in all, I am not worried about the sink collapsing. As I said, this is worst case scenario, and then some.
I we only fill the sink 1/2 full, that would be about 60 lbs for the entire sink, instead of 119 lbs for a sink that is 10 x 15 x 22. But again, the sink slopes from 10" deep at one corner to about 8" at the shallow end.
No, I am not worried about failure.
