On your
page Emmet_the_Pig.html you asked about
the broken fire hydrant -- "Shouldn't there
be a huge geyser of water shooting out of this..."
Some hydrants do
that, some don't. They are called
wet barrels and dry barrels.
Wet means the
water pressure is held back by a valve in the barrel, and if you knock
it off, you have a geyser.
Dry means the
valve is below the street, opened by a rod that extends down from top
of the barrel. In the one you
photographed, the rod is visible (square shaped) and was designed to
break off.
