SFWIW, there is/was a granite quarry on the west side of
Kelleys Island, one of the Lake Erie Islands, located in the
western end of Lake Erie.
Every fall they would drill a line of holes in the granite, then fill
holes with water and wait for winter to do it's work by freezing
the water in the holes and splitting the granite.
Water expands 1.04% by volume when it freezes and forms ice.
Does sound like much, but it was enough to split the granite to be
quarried during the following season.
Not quite as straight as he'd have liked, eh? That's probably less of
a problem for foundation rocks than if the stone was being cut for
thin countertops. I wonder if he turned it over and tried to
straighten the left piece...
That's how he can tell the pressure, by sound. Similarly, mechanics
judge the flexing of the wrench/extension/socket/bolt to know the
proper torque by "feel".
The more you know, the less you need.
-- Aboriginal Saying
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