Cementing the Locks in the Canal, Perhaps?

Most days, I go for a walk. Sometimes I vary my route. Yesterday, as I was walking down a a side street, I passed a house that had a cement mixer parked outside. The concrete pouring chute from the mixer went through a casement window into the basement of the house. They apparently were installing (or replacing) a cement floor.

It occurred to me that maybe they were cementing over the locks in the Panama Canal.

(If you don't get the reference, read or watch.)