Not my job actually, I'm helping a friend figure out liability before it ends up in court.
This was actually a demolition - the walls were 5' for stalls in a barn. They were set on pre-existing curbs and the rebar from the new walls was only a couple inches into the existing curbs. The braintrust doing the demo decided they didn't like taking these out one at a time and decided to take them three at a time. They cut them loose, hooked up a come-along and were shocked when the damned things came down like dominoes. Not just the three they had cut loose, but a few beyond those given the momentum.
There was someone working on the other side of the last wall to come down, who got his legs trashed by the wall - not to mention he was a couple steps up a ladder.
I haven't seen the site and probably won't - I've only seen pictures. But it was pretty obvious that there wasn't much rebar sticking out the bottom of the walls. The walls were 6" thick.