Sanitary district offset discs

[+walkingmaniac]

I have found several sanitary district offset discs on the curbs around my work. are these bench marks or somthing else I have pictures .. any help would be great.

[+Kewaneh & Shark]

A picture would help to be sure, but I don't think what you've found are benchmarks.

 

Some municipalities and private utility districts place permanent, above ground markers to help locate their underground facilities. I've seen where marks are placed on the tops of curbs as 'offsets' to underground lines, ie: the underground sewer line is 20' east of the mark on the curb (and 7' below the surface). However, most municipalities just use the curb face as the mark (ie: sewer is placed 8' from the west curb and the water is placed 6' from the east curb).

 

In most (all) cases, before any construction is performed in an area, an underground service alert organization is called and the utility companies are requested to mark the locations of any utilities they may have in the area. A mark on a curb would help that agency locate their utilities.

 

- Kewaneh