Concrete questions need to be asked after Florida building collapse
The thing that was unique about this building was that sometimes when I pulled the trigger, the piston would blow right through the box and into the ceiling, and a cloud of concrete dust would fall back in my face. I had hit a hollow spot in the concrete. This happened often.
In order to get the boxes to attach to the ceiling, in this case, I would have to move the box to a different location and try again, hopefully finding a spot where…
there was actually some solid concrete.
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