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> Manhole covers are round if they cover a pipe and square if they cover a brick built manhole This is inaccurate as a generalization - in the three jurisdicti
by SECProto 4y ago
> Manhole covers are round if they cover a pipe and square if they cover a brick built manhole
This is inaccurate as a generalization - in the three jurisdictions I've worked in, they're round if they're newer than ~1990, and mix of round and square (or two triangles that go together to make a square) if they're older than that. The frame and cover are replaced independently from the MH structure itself so the cover doesn't tell you anything about the makeup of the structure.
- jimnotgym 4y agoNot quite true. The cover itself has to be supported by a structure. The frame itself is insufficient. If you put a round cover on a square hole it would cave in if a truck ran over it.
- SECProto 4y agoCatch basins in my jurisdiction have round covers on a square structure. The cast iron frame is square with a circular hole in the top. Edit: for example https://maps.app.goo.gl/m8rR4vrPHBPTyXxo9 https://maps.app.goo.gl/m8rR4vrPHBPTyXxo9