Earth's Largest Surveyor Network

Chris Wasemann
• Chicago, IL
• United States
• Blog Posts
• Discussions (4)
• Surveyor Support Group Forums
• Surveyor Photos
• Photo Albums
• Land Surveyor Videos

## Chris Wasemann's Discussions

### Traverse between two known points?

Started this discussion. Last reply by MARTIN SILA Jan 3.

I would like to know a methodology for traversing between two known points that cannot see between the two points. That is you cannot occupy one point and see the other. At Ohare airport in Chicagoâ€¦Read more â†’

Subject Tags: Traverse

Chris Wasemann has not received any Boosts yet

Say Thanks!

# Chris Wasemann's Profile

## Community Feed

"DO a ray trace: occuppy an arbitrary point, set an arbitrary orientation to one of the monuments, traverse through a set of points to the 2nd monument, adjust using the datum bearing and distance."
Jan 3
Chris Wasemann's discussion was featured

### Traverse between two known points?

I would like to know a methodology for traversing between two known points that cannot see between the two points. That is you cannot occupy one point and see the other. At Ohare airport in Chicago I have several known monuments. I would like to traverse between two points to establish control between the monuments. However, if I start on one point I will not have a known back sight. Also, the two points are not within sight of each other. Several turns will be required. How do I go aboutâ€¦See More
Dec 16, 2017
"Setup on 1st point and perform a solar observation to a reference mark, reduce it to true or grid azimuth, do the same for the second point, setup on 1st point backsighting the reference point and traverse to to new points and close on your secondâ€¦"
Dec 9, 2017
"You can use DGPS for the job or if you are proficient with total station, you use resection method"
Dec 4, 2017
"CW, So you know the coords of the two points you are traversing between right? You can calc your known bearing between these two points.Â  Just set up on a random point between them, backsight the first and then traverse however you need to getâ€¦"
Dec 4, 2017
"Â Hi Chris, This depends on what the data on the monuments is. Was this data conventional or wasÂ  GPS used. If not, this GPS Azimuth does not relate to the Azimuth between the known monuments anyway it is no more than a assumedâ€¦"
Dec 3, 2017
"A resection will not work because of line of sight obstructions. Using GPS is not ideal due to tall buildings and trees. I did set a gps point to use an azimuth to use for a back sight while occupying one of the known monuments. However, I do notâ€¦"
Dec 3, 2017
"Hi Erasmus, It just depends, on what you can see and use. If the two points can be seen by doing a resection then you started a new problem. Although a 2 point resection is possible to have high accuracies,it is not wise to use them. Â You needâ€¦"
Dec 3, 2017
"hello"
Dec 3, 2017
"I really think resection method will do!!!"
Dec 3, 2017
Erasmus favorited Chris Wasemann's discussion Traverse between two know points?
Dec 3, 2017
Chris Wasemann's discussion was featured

### Traverse between two know points?

I would like to know a methodology for traversing between two known points that cannot see between the two points. That is you cannot occupy one point and see the other. At Ohare airport in Chicago I have several known monuments. I would like to traverse between two points to establish control between the monuments. However, if I start on one point I will not have a known back sight. Also, the two points are not within sight of each other. Several turns will be required. How do I go aboutâ€¦See More
Dec 2, 2017
Chris Wasemann is on spot light
Dec 2, 2017
"how about resection method? i think that's can solve the problem as long as the two known points are still can you see them from another point of view.."
Dec 2, 2017
"Just take a Sun Shot or a Polaris Shot for Azimuth."
Dec 1, 2017
"White, the obstacle. Red,; known control-points. Yellow; temporaly points. Magenta; observations."
Nov 30, 2017

## Profile Information

I am here because I am a.
Surveyor
Surveyor Bio:
SIT
SIT
How many years have you been surveying?
10

## Comment Wall (1 comment)

At 10:40am on December 3, 2017, EWEJE EMMANUEL TIMILEYIN saidâ€¦
hello

Where Thousands of Professional Land Surveyors, Students of Surveying and Educators are United through Collaborative Knowledge and Purpose.

## Surveying Knowledge Share

Search Here:
Search over a million pages of shared surveying experiences from all corners of Earth!

 âž•Add Photos âž•Add Videos âž•Add a Discussion âž•Add a Blog Post Find a Surveyor Join a Hub Donate Mobile Rover *Apps Open In Window: Surveyor Chat Search LSU Your Weather Converter Video Chat Member Map Support Guides

## Tools,Apps and Quick Guides

+LandSurveyorsUnitedon

## Dedicated to the Memory of Skip Farrow (1953-2015)

Drag Button to bookmark bar and view submitted links here.Will soon be moved to a directory

## Location Based Surveying Practices

Land Surveyors United is the world's FIRST Global Social Network for geospatial professionals. We have dedicated, geolocated support groups for practically every country, continent and state on earth, for you to utilize for building your personal network. We are all essentially concerned with the same issues, no matter where we are located on earth. However, surveying practices and methods vary depending on the geographic location where we work. If you have noticed similarities and differences between the conditions, laws and practices between two or more areas of the world,discuss it in this forum. Build your reputation online by posting relevant discussions in your local group below.

### Join and Introduce Yourself in Your Local Geosocial Forum:

Not based in the US? Here are other groups for surveyors around the world to join and contribute knowledge and experiences as a land surveyor:

And more... Find your group forum based on location.

what where
job title, keywords or company
 city, state or zip

PLEASE DONATE TODAY. Your generosity preserves surveying and mapping knowledge for future generations. Thank you.