Safely covering a floor opening with a piece of plywood requires more than just laying down the material over the hole, or even nailing it down.Total on the job safety means a total job of eliminating a hazard. Half a job or inadequate or incomplete jobs of covering hole in the floor. Why did it happen?Although originally nailed down with 8d concrete nails, a small piece of plywood over the hole wasn’t large enough to overlay it adequately. Traffic over it sprung the plywood and loosened the...
from Marek - Strength from Within http://ift.tt/2ssMUkK
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