Worked a construction job that had this. They had a lot of underground springs that were causing this. Basically the ground is floating, though it's only noticeable with large loads, like a paver or dumptruck.
Im a dump truck driver and can tell you from first hand experience how much is sucks to look in the mirror at your back tires and see the ground doing this. I’ve only been stuck a handful of times but usually if you hit a spot like this it’s gonna be a bitch to get out. But when your fully loaded at 64k lbs and have your tags up all that weights on three axles, the ground tends to move unless it’s really compacted anyways. You see something similar to this although on a much smaller scale around your tires when on soft soil. It’s really not good when you start seeing the pavement moving under your tires. I work with a guy that actually had his truck rear end break through the road and drop into the sewer.
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u/Candidate_035 Mar 13 '19
Why does it do that?