I have a series of section corners that are monumented by 6"x6" concrete pillars set flush with the surface. These were set by the county surveyor back around 1915, supposedly in place of the original GLO stones.
Anyway, I'm going to use these monuments, and I need to file corner records for all of them. To make them more easily retracable, I'd like to put some metal in/around them somehow. I am a little hesitant to drill and epoxy something in the top, in case I chip up or further degrade the concrete. But I'd also like future surveyors know which part of the monument I used for my point. Seasoned veteran suggestions?
Thanks.
Take one cordless drill, a quarter-inch masonry bit, and a quarter-inch MAG nail, in about one minute the problem the problem is solved. Exact point and is findable with locator. (Drill hole slightly deeper that the nail so as not to damage concrete when nail is placed).
> I have a series of section corners that are monumented by 6"x6" concrete pillars set flush with the surface. These were set by the county surveyor back around 1915, supposedly in place of the original GLO stones.
>
> Anyway, I'm going to use these monuments, and I need to file corner records for all of them. To make them more easily retracable, I'd like to put some metal in/around them somehow. I am a little hesitant to drill and epoxy something in the top, in case I chip up or further degrade the concrete. But I'd also like future surveyors know which part of the monument I used for my point. Seasoned veteran suggestions?
>
> Thanks.
You still might split it. A cheap and easy method would be to epoxy a magnet to it. Or, just drive a 1/2" steel rod on the North side or it and say that you drove a 1/2" steel rod on the North side of it in the corner record.
OTOH, drilling and fracturing the monument, in the center, and placing a 1/2" rebar or mag nail will FOREVER set the center of the monument.
Ultimately, it doesn't matter if you do nothing other than make new witness' trees or if you provide SPC on each one (both of which are a great idea).
For location, and since I work on the grid, I rather have a good SPC to locate with (not set back) to find it than a 1/2" rebar, but not everyone works on the grid.
For old or tough to find corners, I still mark new witness trees, place rods beside rocks, put NAD83 coordinates on it, et cetera. If one is good, two are better.
Use the center, and expect the next person to do likewise. Then you don't need a nail.
For magnetic locating, use a magnet or some piece of iron that does NOT look like typical monuments in your area. Maybe a thin angle iron? Multiple welding rods? You wouldn't want somebody to use the piece of magnetic junk you stuck in to be mistaken for a pincushion.
Drive a piece of angle iron along one or two corners of the monument. That will make it a lot more visible to your locator and won't be mistaken for the monument itself.
> Anyway, I'm going to use these monuments, and I need to file corner records for all of them. To make them more easily retracable, I'd like to put some metal in/around them somehow.
I'd be loath to drill holes. Why not just report the SP coordinates for the monuments in your corner records? That will make them findable, without making them too conspicuous.
Take a 1/4 inch masonry drill bit and with a chordless drill, drill a small hole in the top center for a measurement point. Drive the angle iron along a corner of the monument flush to the ground,to make the schonsticker zing. File the record noting the measurement point and the metal accessory. Keep up the good work and intentions.
Pablo B-)
N.D. LS No. 2428
I have to tell you that I am very surprised at the recommendations for using SPC to really nail down a location on a monument. I come from the colonial world which is nearly another planet but replacing any sort of physical monumentation with coordinates is not on the table.
There may be some evidentiary issues with putting a specific spot on a pre-existing monument.
> I have to tell you that I am very surprised at the recommendations for using SPC to really nail down a location on a monument.
I'm not recommending SPC to nail down the location. The monument has been doing that nicely for 98 years. Just SPC to make the monument findable. Instead of potentially destroying it by drilling into it.
:good: :good:
> Drive a piece of angle iron along one or two corners of the monument. That will make it a lot more visible to your locator and won't be mistaken for the monument itself.
>
at least one would hope......
