Posted By Eugene Kooper on 10/19/2008 at 7:11 PM
few days ago "rankin file" posted an example of another surveyor
replacing an original stone 1/4 corner with a #6 rebar and cap. His
question was, "Why would you do that?"
Given the facts presented
by Mark, I would ask the same question. As perplexing to me, are folks
that drill a hole in the top of the stone and set a cap. In Colorado,
the PLS is obliged to upgrade monuments under certain conditions. From
the AES Board Rules, an original monument is exempt from being upgraded
as long as, "the monument is readily identifiable and reasonably
durable" (Rule 188.8.131.52).
In addition to the Board's minimum
requirements, I believe that original monuments should be preserved
whenever possible, even if it is not always practicable. Preserve the
original so the next surveyor feels the same thrill of finding that
original stone! If the only reason for upgrading the stone is to add a
"magnetic signature" to the monument then toss a ceramic magnet or two
along the scribed side(s) of the stone.
There are, however,
times when in the professional judgment of the land surveyor, a modern
monument should replace the original. Back in 2001 I found the first
corner set in an alpine valley. However, when I gave it a quick shake
to check if it was firmly set, the top 8" popped off in my hand.
Chemical weathering had created a plane of weakness.
I was still
disinclined to replace it, so I placed the "top" back on, referenced
the stone out, and hauled the remains of the stone back to town. Part
of my client's business is the restoration of mineral specimens, so I
had them professionally epoxy the pieces back together, and fill in any
remaining gaps with epoxy. I reset the stone in its original position
in 2002 and filed a monument record.
This summer I had occasion
to revisit the stone and found that the repair job was not holding up
to the severe winters. Because the stone is above the toe of the scree
slope, I did not bury it inverted as a memorial, but instead set a
second monument in the center of the 2-foot diameter remains of the
original bearing tree.
Initially I thought that my
measurements missed the record by 1.5 feet. It is normal for mineral
surveyors to measure to the blaze face (specifically to the scribed
"X") instead of to the center of the tree. Since this was the first
mineral survey done in this valley (August 20, 1873), the surveyor was
actually a U.S. Deputy Surveyor, NOT a U.S. Deputy Mineral Surveyor.
Because of that, I believe that he did what he was familiar with; he
measured to the center of the tree. When I measure from the center of
the tree, I'm still on the rounded top of the stone!
rare situations where replacing an original stone is the appropriate
action to take. In Colorado, durability is a prime consideration when
making that determination.
Dave Karoly knows how much I
"cherish" original evidence and esp. its preservation for the next
surveyor to find! Yep, Dave, it was more than hard for me to remove
that stone. There will be an official wake in mid November when John
Stahl, Loyal Olson and Dave Doyle come to visit for the PLSC Fall
Technical Conference. JB and Dave are two of our speakers.
To read the rest of this thread go to
Replacing an Original Stone with a Modern Monument
October 20, 2008