About Amerisurv| Contact    
Magazine | Newsletter    
Flickr Photos | Advertise    
HomeNewsNewsletterAmerisurv DirectoryJobsStoreAuthorsHistoryArchivesBlogVideosEvents

Software Reviews
Sponsored By

Continuing Series
An RTN expert provides everything you need to know about network-corrected real-time GNSS observations.
Click Here to begin the series,
or view the Article PDF's Here
76-PageFlip Compilation
of the entire series
Test Yourself

Got Answers?
Test your knowledge with NCEES-level questions.
  Start HERE
Meet the Authors
Check out our fine lineup of writers. Each an expert in his or her field.
Wow Factor
Sponsored By

Product Reviews
Partner Sites







Spatial Media LLC properties




Home arrow Archives   The American Surveyor     

Point to Point: Our Insular World Print E-mail
Written by Joel Leininger, LS   
Thursday, 26 July 2007

A 87Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE

We should get out more. No, I don't mean out in the field, although that may also be appropriate. I mean out into the stream of commerce where our products are used. Have you ever examined what you do from the perspective of your clients?

I had an attorney ask me why it was that bollards were in the middle of the street on one of our surveys. Assuring her that no bollards threatened traffic in the area, I wondered where she had gotten that idea. It turned out she had confused our "break balls," which we place at the end of every boundary course, with bollards, which existed elsewhere on the site, and thus appeared in the Legend. Since the boundary ran to the center of the street on that project, break balls were drawn in the center of the paving. It never occurred to us that the symbol for bollards was identical to our break balls. We had a good laugh at our offices about that, but we were the ones at fault. In our insular world there was no confusion: the context of the plat itself constrained our interpretation, and subconsciously informed us that circles within boundary lines were not physical objects, but were instead part of the panache we attempted to infuse into the plat.

Not so to our reader; they don't live in our insular world. We have little control over how our products are interpreted, and can hardly blame them for taking our Legend at face value. By placing ourselves in our client's shoes and examining our processes, we stand a much better chance of rendering a usable (and understandable) service. We've since changed our symbol for bollards.

When we lose focus on what is important to our clients, we run the risk of veering off on tangents that consume resources to no effect. Positional accuracy in ALTA surveys (hereafter, "posacc") is a good example. Has it ever occurred to you that no one except surveyors cares about this? Really. (And only few surveyors at that.) A solution desperately in search of a problem, posacc has been thrust upon the title surveying community at large when there was no outcry for it, largely a result of dissatisfaction from some quarters over the old traverse spec tables, coupled with the proliferation of GPS.

I was never a fan of those ALTA traverse tables either, and I view the discarding of the classes of survey as an especially good move, although it was probably done for the wrong reasons.

Clients expect a survey to be perfectly accurate and perfectly precise. These unattainable goals have never been satisfied in any survey, anywhere. Why, then, have we not had malpractice lawsuits continually? After all, it would be easy to demonstrate that client expectations do not include errors, yet all surveys have them. The reason, of course, is that there are no consequences of producing these less-than-perfect surveys (I'm setting aside boundary problems here). Think about that. We know that we cannot produce perfect measurements (and never have been able to do so), and thus any dependent survey is less than perfect. The real estate community has not been harmed by this fact. Surveys have been "good enough."

And there lies the crux of the subject. Why develop standards to ensure against a non-existent risk?

I have never had a layman ask me about the accuracy of the planimetric features we show on our plats, nor have I ever heard of that happening. Yet, some apparently think that those features are at risk of misplacement on the drawing, and thus standards are necessary to ensure their accuracy. At least I hope so. Surely those involved in the development of the standard considered the miscellaneous planimetric features littering every site and thoughtfully concluded that the standard must apply to those objects...Right?

Why Not?
Logically, one might ask if "measuring up" to a particular standard is a bad thing. And it's not, looked at in a vacuum. But we do not operate in a vacuum. There are real world consequences associated with expending too much time building a product, without a commensurate increase in the product's value. If our plat is to be drawn on a 50-scale, does it matter that every water valve in the middle of the site be located to the nearest 0.10 of a foot? Who would care, either way?

There is nothing wrong, of course, with standards that reflect the actual requirements of use. In other words, accuracy standards associated with bridge construction reflect the realities of steel fitting, and they should. Measurements that fail tolerances result in steel members that cannot be attached correctly--a costly mistake. Likewise, many government programs require that initial surveys be of a certain caliber because subsequent uses would fail if it were not so.

So where is the analysis concluding that title insurance surveys require tolerances not exceeding 0.07 feet plus 50 parts per million for every object in the survey? Not just the traverse here, folks, but "any point on the survey relative to any other point on the same survey at the 95 percent confidence level." Perhaps I'm missing something here, but that water valve above which is to be shown only graphically, qualifies as "an object." Who was in the room when this was decided?

The problem with forcing any population to jump through hoops prior to convincing them of the importance of those hoops, is that they will view them as an unnecessary interference with their operations, and seek ways around (or ignore) them. There will never be any enforcement of these provisions, and there will never be any consequence to our clients as a result.

I would be the last to suggest that boundaries in the wrong place are harmless, and the last to suggest that surveyors should not be held accountable for them. But the ALTA standards expressly recognize that boundaries are impacted by factors other than measurements (which is very true). So, although boundary misplacement remains a problem, the posacc solution sidesteps it.

This sounds to me like a bollard in the middle of the street. Are our clients being served by this? Step up to the plate, NSPS, and explain this or correct it.

Joel Leininger is a principal of S.J. Martenet & Co. in Baltimore and Associate Editor of the magazine.

A 87Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE

< Prev   Next >

 American Surveyor Recent Articles
Thought Leader: NCEES Forum on the Future of Surveying
On June 10-11, 2016, the Forum on the Future of Surveying (Forum) under the auspices of the National Council of Examiners for Engineering and Surveying (NCEES) was hosted by the Louisiana Professional Engineers and Land Surveyors Board (LAPELS) offices in Baton Rouge, Louisiana ....
Read the Article
Jerry Penry, PS 
The Gold Tree
The Wildcat Hills are a scenic area of buttes and canyons forested with pine and cedar located in the Panhandle region of Nebraska between the North Platte River and Pumpkin Creek. In the 1830-60's, early emigrants passed through the northern ....
Read the Article
Fulvio Bernardini 
Catching the Right Train
At work in his ground floor office in full view of passers-by, Diego Callegari had no idea that his career would take a new turn that day in 2001. Pictures of a survey that Zenit Topografia--the surveying firm owned by Callegari and Nicola Rebora ....
Read the Article
Lieutenant Charles Pierce Part 1: The California Coast 1932--1933
During the 1930's there was a huge geodetic surveying effort as thousands of men were hired on various federal projects meant to help mitigate the high unemployment of the Depression Era. Charles Pierce (not to be confused with the great Coast Survey scientist and philosopher Charles Sanders ....
Read the Article
Eric Stahlke, PS 
The Final Voyage Part 12
I kept a journal on the Seloohge, these are the final pages: August 16: The area we are working now, on the Yukon between Ruby and Tanana, is a remote and beautiful stretch of river with a different climate than we experienced on the lower Yukon ....
Read the Article
Dr. Mathias Lemmens 
EDM Without Reflectors
A total station is an angle measuring device, also known as theodolite, integrated with an electronic distance meter (EDM). The integration provides the ability to measure angles and distances by the same instrument which gives the surveyor a leap in portability, convenience and speed ....
Read the Article
Michael J. Pallamary, PS 
Angle Points: A Surveyor's Crossword Puzzle
2. Unit Of Measurement    5. A Measuring Component    7. In The Hills    9. River Component    10. Four Parts    12. Publisher    16. Line Of Elevation    18. Chaining Pin    19. Map By Colors    22. Way To Map    23. Geometric Shape    26. Above The Center    27. Rotation Of Flight Line ....
Read the Article
Dave Lindell, PS 
Test Yourself: Angles, Angles, Angle
Given: parallelogram ABCD, AE bisector of angle BAD, AE & BC extended meet at F, Q is center of circle passing through points F, C, and E, angle BQD is 1120. What is angle QBD? ....
Read the Article
Michael J. Pallamary, PS 
The Curt Brown Chronicles: Line Trees
When the original section lines of the U. S. sectionalized land system were run, especially in forested areas, it was not uncommon for original surveyors to mark line trees in accordance with the instructions issued by the Surveyor General. The following question was raised by R. E. Schmeling on ....
Read the Article
Wendy Lathrop, PS, CFM 
Vantage Point: Pop-Ups and Zoning
The term "pop-up" has several meanings, but is not widely known outside of urban areas. As I'll use it today, it will not be the compact expandable camper. It also will not refer to adding a story to crown a row house (currently the source of a great zoning battle in Washington, DC ....
Read the Article


Amerisurv Exclusive Online-only Article ticker
Featured Amerisurv Events
List Your Event Here
contact Amerisurv


Teledyne Optech
Announces Polaris

press [at] amerisurv.com
Online Internet Content


News Feeds

Subscribe to Amerisurv news & updates via RSS or get our Feedburn
xml feed

Need Help? See this RSS Tutorial

Historic Maps

post a job
Reach our audience of Professional land surveyors and Geo-Technology professionals with your GeoJobs career ad. Feel free to contact us if you need additional information.


Social Bookmarks

Amerisurv on Facebook 

Amerisurv LinkedIn Group 

Amerisurv Flickr Photos 

Amerisurv videos on YouTube 



The American Surveyor © All rights reserved / Privacy Statement
Spatial Media LLC
905 W 7th St #331
Frederick MD 21701
301-695-1538 - fax