Jump to content

My Very Own Monument


Spoo

Recommended Posts

OK.....I had to try this myself. Behind my house the land rises to a hill and at the very top the granite ledge rises out of the ground. I had to put in my own Benchmark. I also had to do it the old fashioned way. By hand. By myself.

 

I ordered a custom Disk from Berntsen Int'l and tools from doitbest.com. In ordering the disk, I was careful to choose a center design that I do not think is being used by an official agency. Over a 10 day period, I took GPS readings of the location and averaged them.

 

This is a picture of the soon to be Monumented Ledge with some of the tools.

 

72a2bc28-0604-4682-bae6-8a9f8492d0f2.jpg

 

First I had to drill the hole. One inch diameter by 3-1/2 inches deep. Using only a 1-1/2 pound nailing hammer and lots of water, this took me about 30 minutes. I also went about 4 inches deep just because. I have no doubt that if I had had a three or seven pound hammer this would have been much quicker.

 

The hole:

 

3b3a71c4-4c18-4a11-99e4-357f59020f04.jpg

 

Next, I had to chisel a depression to fit the disk flush. I used 1-1/4" and 3/4" chisels to do the rough work and a 3/8" chisel for the finish work. I wanted a good finish with no chips. I found the granite to be very easy to work with these new tools.

 

5dc1647d-dc99-46c0-a0f9-39ec791c70fa.jpg

 

Finally, my disk arrived from Berntsen. Their quality was excellent and met their advertised specs.

 

7904c77e-47e4-421c-bc14-e89f34fa4e9a.jpg

 

ff09b947-7ad3-4d57-997a-73e0d1c44e23.jpg

 

Next, I was afraid to stamp this once in place for fear of screwing up my cement work. (I had no faith in myself.) So I pre-stamped the elevation by hand. (I wanted to add some authenticity to the job)

 

eac5e4aa-aae9-4362-ada6-95b4b1e90246.jpg

 

Finally, it was time to install it. I used the recommended cement sold by Berntsen and found it easy to work with but you have to move FAST. It does dry quickly.

 

21cdcbaa-c564-4b1f-9bcb-05baea349c16.jpg

 

A perfect fit if I do say so myself !

 

The completed Monument:

 

7d8da1a0-0725-4a67-af7e-4d33d55a3857.jpg

 

OK...now for the bottom lines: My DIRECT labor on this job was about 2 hours. Not bad for a beginner. The cost:

 

Disk: $27.00

Custom Stamping: 30.00

Cement: 6.70

Shipping: 10.56

1" Star Drill: 11.99

1-1/4" Chisel: 11.79

Shipping: 8.89

3/8" Chisel: 4.50

 

Total: $111.43

 

All other tools and items were owned and available.

 

Now I just need a Witness Post sign ! (I already have the post)

 

I had a lot of fun doing this and highly recommend it to everyone.

 

Here are the Co-ordinates: (And DO NOT give me a hard time.....I realize my hand-held GPS is +/- 3 feet)

 

"At the top of a hill in an open field, the only open ledge visible, a standard disk, stamped SNYDER 2005 HILL-GULLY FARM 480 FT. With a center point that is circled.

Located at about 43 degrees 52.851 N

070 degrees 46.219 W

Elevation 480 Feet"

Edited by Spoo
Link to post
Disk:                        $27.00

Custom Stamping:      30.00

Cement:                      6.70

Shipping:                  10.56

1" Star Drill:              11.99

1-1/4" Chisel:            11.79

Shipping:                    8.89

3/8" Chisel:                4.50

 

Total:                    $111.43

Satisfaction: PRICELESS!

Link to post

Spoo -

 

That is a great story and great illustration. Very well done.

 

Of course, you've pried open Pandora's box. First, we became compulsive about finding benchmarks. Then, some of us developed a compulsion centered around reporting recoveries to the NGS. Now, you've gone and set a benchmark yourself, and it had nothing to do with earning your livelihood. You've set a hobbyist benchmark. You lead the community in amateur benchmarks set with 1.

 

I'm going over to the Bersten website right now and order two disks immediately. On second thought, Artman's probably already had that idea; better make it THREE. (Hope Me & Bucky doesn't read this thread) (Hope my wife doesn't read this thread).

 

Seriously, Spoo, two thumbs up!!

 

Will

Edited by seventhings
Link to post

NFA:

 

A few weeks ago when I first became interested in a Benchmark of my own, I posted some some notes on the forums about gps-fun.

 

They informed me at that time that they had only made 50 marks, that all were gone, that they were waiting to see if there was any further interest in making more, and that I was now on their waiting list.

 

I have not heard anything further from them to date.

Link to post

gps-fun.com is me...I'll place an order tomorrow for another 25-50 if there is sufficient interest so that I'm not stuck with too many at the end...

 

send me an email saying that you would like one (or more) of the benchmarks, and I'll put together another order...I could have them by early September, for monumenting before snow flies.

 

jamie

Link to post
I'm going over to the Bersten website right now and order two disks immediately.  On second thought, Artman's probably already had that idea; better make it THREE. (Hope Me & Bucky doesn't read this thread)  (Hope my wife doesn't read this thread).

Now hold on just a darned second there, Will, he said, putting on his best outraged Jimmy Stewart voice. Just how, just how crazy do you think ....

 

Oh, he said, switching effortlessly to Emily Litella. Never mind.

 

Anyway, I don't have any exposed bedrock nearby, and I'm not sure how my homeowner's association would react to pouring a concrete monument near my townhouse. Of course, I do have that nice brick facade, where a custom benchmark might look something like this:

 

5639bd97-db7a-405a-b318-cc689d89955a.jpg

Link to post

Good on you for what you did Spoo, and if you want to kick it up a notch, kc2ixe left a little clue in the NGS forum a couple months ago...

 

http://www.nottingham.ac.uk/iessg/gringo/

 

that is if you feel like playing with it...

 

Jamie, I have been an advocate of your GPS Fun in the past, and I feel that if you build it, they will come. So Keep Marketing!

 

Rob

Edited by evenfall
Link to post

Very nice monumenting Spoo!

 

I tried for one of the gps-fun marks, but sadly, the post office decided I wasn't unworthy and it got lost in the mail (no fault of gps-fun or anything, just bad luck). Since then I have ordered my own personal marker off bertlsen's site. Now I'm just waiting to own my own property to put it on :P

Link to post

Rob wrote:

Jamie, I have been an advocate of your GPS Fun in the past, and I feel that if you build it, they will come. So Keep Marketing!

 

Ditto, except I don't care for the "for fun" wording. Wish there was another way to let the world know it's not "real".

 

-Paul-

Link to post
Ditto, except I don't care for the "for fun" wording. Wish there was another way to let the world know it's not "real".

 

-Paul-

I don't get the "not real" idea...there are gazillions of benchmarks out there, placed by thousands of different people and organizations...the point of them all is to mark the location of a point...sometimes for boundary markers, sometimes for summit markers, sometimes for building projects that never happen, sometimes for marking historic landmarks, sometimes for use in navigation using a GPS...any surveyor coming across a gps-fun benchmark would know that its not the one he/she is looking for, so what harm could come of it?

 

At any rate...the important thing is, congratulations to Spoo for monumenting his own benchmark...I think it's both "real" and real fun!

 

nfa-jamie

Edited by NFA
Link to post

I too agree,we should have fun.

I asked for a couple myself.

I am working on a major project that some day may be in a data base somewhere other than my own.

 

There are ways to get your data included in surveys.

BLUE BOOK POLICY

 

CONTRIBUTION OF GEODETIC DATA

 

GPS pdf\

 

Some Surveyors will not even go off the Bench Marks that are already set.

So what harm is another or 2.

Link to post

deimos:

 

By all means you may recover this mark. I just do not know where you would log it.

 

As for refreshments: Beer will do nicely for me. And you better bring lots of raw steak. I have SEVEN dogs you'll have to get past.

Edited by Spoo
Link to post
Spoo Posted on Aug 17 2005, 12:53 PM

I have SEVEN dogs you'll have to get past. 

 

deimos444 Posted on Aug 17 2005, 01:10 PM

  I just have the one Golden Retriever but he is as friendly as any seven normal dogs. 

 

Problem deimos........

 

I never said I had seven NORMAL dogs!

Link to post
Ditto, except I don't care for the "for fun" wording. Wish there was another way to let the world know it's not "real".

 

-Paul-

I don't get the "not real" idea...there are gazillions of benchmarks out there, placed by thousands of different people and organizations...the point of them all is to mark the location of a point...sometimes for boundary markers, sometimes for summit markers, sometimes for building projects that never happen, sometimes for marking historic landmarks, sometimes for use in navigation using a GPS...any surveyor coming across a gps-fun benchmark would know that its not the one he/she is looking for, so what harm could come of it?

 

At any rate...the important thing is, congratulations to Spoo for monumenting his own benchmark...I think it's both "real" and real fun!

 

nfa-jamie

Fwiw, it is real, real enough. NFA has a legit idea and he is ascribing data to the disc and keeping records for it. It isn't survey data of high quality but they do have GPS derived locations to a limited accuracy, and are not telling a fib. Their express purpose is about a game. They have as much validity as the station Spoo set for himself.

 

Any future surveyor will look up Spoo's station in any way they can, and they will likely find no registered data in any agency where certified data is found, and they will then simply not use it as it won't qualify for use. That does not take away from it being the monument that Spoo set for his Family Legacy on his land.

 

A Surveyor can easily look at these and see what they are and what they are not. I mean, Jamie has been up front. it is about GPS FUN, Not GPS Work Or GPS Accuracy... Y'know? This is a GPS GAME. No harm no foul. I mean, a Surveyor routinely sees a lot of survey markers. We are not confused by them, nor are we overly curious beyond the ones we need to work with right now. That right there disqualifies a lot of survey markers...

 

I think Jaime is going about this just fine. He makes no bones about what his markers are for, and what they are not. His honesty about that is what brings integrity to his game.

 

Rob

Link to post

ArtMan:

 

I have been trying to find the disk that you showed a picture of above. Maybe I am an idiot, but I cannot find anything in the system that defines that disk.

 

(ART'S BENCH MARK)

 

Is it just a very clever computer-art done by you?

Link to post

Spoo, to me it looks like photo shop, look close behind the "art" and "mark" text, you can still see faint left overs of the inscription.

 

And from the text above the pic, says it might look something like this, pretty good job though.

Link to post

I wonder what happened to Spoo. He hasn't logged a find since 2006, and hasn't logged in to the site since last August. Strange for someone interested enough to set his own disk to then disappear. I know he traveled a lot for work, so maybe that is part of the reason.

Link to post

The hole is big enough for it to fit without being squeezed shut. You first fill the hole with cement and then place the mark. When the cement sets it bonds to the sides of the hole, with the split end of the mark ensuring that it can't be pulled out.

 

Also... Holy thread resurrection, Batman!

Edited by Rotareneg
Link to post

The hole is big enough for it to fit without being squeezed shut. You first fill the hole with cement and then place the mark. When the cement sets it bonds to the sides of the hole, with the split end of the mark ensuring that it can't be pulled out.

 

Also... Holy thread resurrection, Batman!

Nice ... but that's not how they used to do it. Observe the following illustration from an early CGS publication:

 

Split%20shaft%20with%20wedge.jpg

 

Notice the wedge in the end of the split shaft. The whole thing was driven into a pre-drilled hole. When the wedge hit the bottom, it got driven up into the shaft, spreading the two sides and forming a very tight fit.

 

Obviously this would work in rock and in hardened concrete which would allow the hole to be drilled the right width and depth (and at the right location). Not so wet concrete. But wet concrete would also not provide a carefully predetermined location. So you couldn't use it for example if you were resetting a surface mark from the underground mark or from the reference marks.

 

Always nice to see how things were done in the "good old days". The picture is from Special Publication 76 (1922).

Edited by Papa-Bear-NYC
Link to post

The hole is big enough for it to fit without being squeezed shut. You first fill the hole with cement and then place the mark. When the cement sets it bonds to the sides of the hole, with the split end of the mark ensuring that it can't be pulled out.

 

Also... Holy thread resurrection, Batman!

Nice ... but that's not how they used to do it. Observe the following illustration from an early CGS publication:

 

Split%20shaft%20with%20wedge.jpg

 

Notice the wedge in the end of the split shaft. The whole thing was driven into a pre-drilled hole. When the wedge hit the bottom, it got driven up into the shaft, spreading the two sides and forming a very tight fit.

 

Obviously this would work in rock and in hardened concrete which would allow the hole to be drilled the right width and depth (and at the right location). Not so wet concrete. But wet concrete would also not provide a carefully predetermined location. So you couldn't use it for example if you were resetting a surface mark from the underground mark or from the reference marks.

 

Always nice to see how things were done in the "good old days". The picture is from Special Publication 76 (1922).

 

That makes perfect sense to me Papa Bear, but what about the two stand-offs under the bottom of the Disk? Wouldn't they leave a gap between the bottom of the Disk and the substrate?

Link to post

That makes perfect sense to me Papa Bear, but what about the two stand-offs under the bottom of the Disk? Wouldn't they leave a gap between the bottom of the Disk and the substrate?

 

Don't believe that those tabs lasted into the 30's. Page 16 of 25 at the below link shows a nice diagram of a rock set. You are placing the disk stem into fresh cementing material of some sort. kayakbird

 

http://www.mdt.mt.gov/other/survey/external/survey/manual_guides_forms/bench_mark_reset_procedures.pdf

Edited by kayakbird
Link to post

That makes perfect sense to me Papa Bear, but what about the two stand-offs under the bottom of the Disk? Wouldn't they leave a gap between the bottom of the Disk and the substrate?

 

Don't believe that those tabs lasted into the 30's. Page 16 of 25 at the below link shows a nice diagram of a rock set. You are placing the disk stem into fresh cementing material of some sort. kayakbird

 

http://www.mdt.mt.gov/other/survey/external/survey/manual_guides_forms/bench_mark_reset_procedures.pdf

 

Ah! It's all clear to me now! Thanks Kayakbird.

Link to post

Those "tabs" were only on very early disks. My guess is that they were intended to help resist rotation of the disk. For disks set in bedrock, two grooves would have had to be chiseled out to allow the disk to set flush.

 

The wedge in the stem groove was also only used on early disks. This looks like an excellent idea, but I have never set one that way, so I can't comment on how well it worked.

 

GeorgeL

NGS

Link to post

Woodworkers sometimes use a wedged tenon in a mortise; same idea.

 

I'd be afraid I wouldn't have the dimensions right. Once you start spreading the wedge you are committed whether or not things fit properly.

 

If you could bell out the bottom of the hole a little it would give more leeway in how much the wedge was allowed to spread the shaft, and therefore make it certain the shaft would go all the way in. But then you are depending only on the cement rather than the mechanical fit to prevent motion.

Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...