@kdfrawg Typical hammer weighs around 85 pounds. And when you see them do it on TV, that's fake. If you just stood there like that, you'd bury the bit then have to bust it loose with a sledgehammer. You have to wrench that hammer up, down and back up to pry what you'e broken away (This is if the concrete is thick).
It's exhausting. I am not even physically capable of doing it for 15 minutes now let alone an eight hour shift.
// @phoneboy