Not the best way to set a corner

Able display of a faint sign of intelligence in action ?

DGG

Wow!

Are we even sure that particular water valve lid is positioned on the correct water valve? Let alone, has it been rotated? It might be for some valve 500 miles away.

This reminds me a bit of a former surveyor in this area who would pick up a loose railroad spike out of the ballast and drive it into the ballast as a survey monument. There are hundreds of spikes within a few feet of the corner. How would you ever know which one was the right one?

Well now, wait a minute.
Except for the Cow's argument that the the lid could be placed on another valve, how far off could it get?
How big are those covers?
Significant?

I don't know. I just know that, with Keith Williams back on the scene, I definitely do not want to be classed as an "expert measurer."
😛
Don

Don, if you measure that "monument" on a warm afternoon I hope you take into account the coefficient of expansion of the iron lid.

When I started out surveying in Arlington, Va there seemed to be a lot of points that fell on manhole lids. We used to chisel marks in the rim so we could criss-cross the plumb bob string on the point. I wonder why anybody would set a cap with identification on a movable object, OH WAIT, the earth is moving too. why are we setting caps?:'( o.O

great point Don.

We should accept it wherever it may fall that day.

Measurements be danged.

Use GPS !

We can get it down to a gnat's whisker that-a-way. Oh, waitaminute.....our tectonic plate is moving, too!:-D

> We used to chisel marks in the rim so we could criss-cross the plumb bob string on the point.

Yep, SOP around here.

Sometimes you'll even see 4 N/Ds instead of chisel marks.

BUT, IF you used epoxy on the lid also, it would be OKAY!!!!
😉

As a greenhorn rodman in the early '90's, my crew had to follow up on another crews job and run levels. The PC from the other had crew chisled and painted the corner of a headstone in a cemetery. He was fired later that week.

> As a greenhorn rodman in the early '90's, my crew had to follow up on another crews job and run levels. The PC from the other had crew chisled and painted the corner of a headstone in a cemetery. He was fired later that week.

That would actually be cool if it was my headstone

Heck, I've never had luck with the epoxy. We set a few block corners in some concrete curbing a few years back, they are all gone now. Bad epoxy maybe???

> > As a greenhorn rodman in the early '90's, my crew had to follow up on another crews job and run levels. The PC from the other had crew chisled and painted the corner of a headstone in a cemetery. He was fired later that week.
>
>
> That would actually be cool if it was my headstone

haha....
Yeah, I like it, try to get a plot for a grave where you can write up an easment for the NGS to set a horizontal or vertical mark to be used by surveyors and have the mark set in the headstone.

Otherwise, please don't bury me down in that cold, cold ground.

I"ve seen a monument set on the lid of a manhole, and not near the middle either. Crossouts on the rim are good, but the lid?

Hey, why is that not a good idea.

The next surveyor just needs to rotate the lid somewhat and the monument will match the new distance.

Maybe a different idea here? 😉

Keith

Due to a mis-set monument case in a new city street project I had to chisel an 'X' and my pls # on the interior ledge of the monument lid. By the time I got to setting this corner the contractor was long gone and there was no way he was going to move this monument case. Somehow he failed to set it in the right place...something about misplaced reference points. He did manage to get the other 5 in the correct location though.

Good one Keith

Maybe that can be a standard monument always set on a lazy-susan type of apparatus. The next guy can just turn the table. Saves on driving all those extra pins in the ground.

You got it Mark!

No more pin cushion corners!