At a very nice high school in Glenview, Il 66~67 an unusual science project exploring the compressibility of liquids was performed.
This required a large team to precisely maintain maximum flow while igniting the compression devices simultaneously at three stalls.
So I was told.
One leader was chosen all windows were opened and every facet was manned by students, the leader signaled to turn on all facets after one minute the signal was given to turn the facets off.
The resulting water hammer ruptured much of the plumbing in the entire building. Pretty funny except having broken bathrooms while repairs were made really sucked.
lol, I wonder what the damage assessment was after that science project!