The pipe’s unexpected elevation from the ground occurred at a sewer construction site where workers had been connecting an existing sewer line with a channel designed to hold excess rainwater to prevent flooding.
The pipe was being used as a retaining structure to keep the surrounding soil from collapsing during the operation, officials said. A short time earlier, workers had drained water from the pipe, which may have caused the empty apparatus to float, they said.
From the article:
I… That still doesn’t make sense to me. Maybe I’m just having trouble picturing what this is even supposed to mean.