What is this thing?

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Found in the floor of my basement, about 10 inches down. House was built in 1954. (lemmy.ca)

submitted 1 year ago by [email protected] to c/[email protected]

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No idea what this is or what the letters might be.

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[–] [email protected] 14 points 1 year ago* (last edited 1 year ago) (1 children)

Okay. You said it was like ten inches down, so I'd guess it's probably not something related to your house, it's probably some bit of infrastructure from the old street. Which means we should be thinking in the realm of "outside municipal access covers", and not "something installed to make my house better".

[–] [email protected] 5 points 1 year ago

10” isn’t all that deep. 4-6” slab with some subgrade. That’s 10” and would be about the depth for backflow preventers. Which that likely isn’t. But depth means nothing.