App for verifying survey drawing and recording building corners

“I have a survey drawing of my property and my property has metal stakes at the corner. I would like to verify the survey drawing to the stakes. I also would like to identify where the corners of my home is located on my property. What would be the best software for these requirements?”

Our Deed Calls function will let you enter bearing and distance information from your survey drawing to generate a plot in the app. You will need to know the coordinates of the point of beginning in order to correctly place the plot on the map.

Our Stakeout functions will help you get to a point or node (where the stake is supposed to be).

These functions are provided in a few of our apps, such as Deed Calls & Stakeout, iCMTGIS III and iCMTGIS PRO.

iCMTGIS III and iCMTGIS PRO also provide GPS data collection functionality that will let you record the corners of your home or any other points, lines and areas.

The important issue is what compatible GPS receiver to use to meet the degree of accuracy that you need. The GPS on iOS devices are good to about 10 meters.

GIS-grade GPS like the Bad Elf GPS and the Dual XGPS-150A claim 2 – 5 meter accuracy. You could use a GIS-grade GPS and Deed Calls & Stakeout to roughly check the stake locations against the drawing.

Survey-grade GPS devices from EOS and Geneq are quite expensive. You might be able to rent an iSXBlue Platinum or an EOS Arrow from a supplier to use with iCMTGIS PRO for best accuracy in stakeout and recording GPS points.

Advertisements

App for fencing property

“I am trying to find a app that I can use to find property corners and go from one corner to another in a straight line ( for fencing ) I have good surveys and legal descriptions to enter for my property. I would like to use my IPhone for this.”

With the legal descriptions and the coordinates of the point of beginning, you could create a deed plot in the Deed Calls & Stakeout app then use the Line Stakeout function to help you walk along the boundary line to find the property corners.

Now, the iPhone GPS is accurate to about 30 ft. An external GIS-grade Bluetooth GPS, such as the Dual XGPS-150A or a Bad Elf GPS, usually claims 2 – 5 meters accuracy (about 6 to 15 ft). You will need better accuracy for fencing a property boundary. You could use iCMTGIS PRO in conjunction with a high-precision GNSS receiver (such as a SXBlue Platinum or an EOS Arrow). The high-end GNSS receivers are very expensive. There are places that rent them out. You might check with them to see if the total cost justifies the one-time use.

EOS Arrow 100 Case Study

If you missed Håkan Bergstedt’s article published in the March/April 2018 issue of the GeoConnexion International Magazine, here is the link to an in-depth write-up posted on the EOS website.

https://eos-gnss.com/mittnorr-land-boundaries/

When faced with the challenging task of finding survey markers or boundaries in an area overgrown with thickets, think iCMTGIS PRO and a high-precision GPS receiver such as the EOS Arrow 100.

Using iCMTGIS PRO to work out land boundaries in Swedish forests

One of our customers, Håkan Bergstedt, wrote an article about using iCMTGIS PRO in conjunction with an EOS Arrow 100 GPS receiver to determine land boundaries in the forests of Sweden.

This interesting story was published on pages 28 and 30 of the March/April 2018 issue of the Geoconnexion International Magazine. You can view this article online for free before the May/June issue is released:

https://flickread.com/edition/html/5aafd53130d7a#29

https://flickread.com/edition/html/5aafd53130d7a#30

Recording property lines

“I have recently purchased a 19 acre field/forest and have a new survey PLAT with freshly marked property pins. I would like to permanently record the data points onto a GPS device such as an iPhone for when the markers are removed (to install fences, argue with neighbors over hunting areas, etc.). I need the app to be able to guide me between the pins while walking with the GPS.”

For your intended use, you will need a high-precision GPS receiver. The GPS built into the iPhone is good to about 30 ft or worse in some situations. This is in adequate for settling arguments between neighbors.

The Deed Calls and Deed Calls & Stakeout apps are for drawing the deed plot by entering the deed calls (bearing and distance information). The Deed Calls & Stakeout app will then be able to guide you along this deed plot. To correctly place the plot on the map on the iPhone, you will need to have the GPS coordinates for the first point. These two apps do provide a “Pick GPS” button for you to grab one GPS fix. However, it will be an approximate position if you are just using the iPhone built-in GPS.

As you want to record the positions of the stake points and also be guided to walk between the pins, the system to use is a high-precision GPS receiver like the iSXBlue II+ GNSS or the EOS Arrow Gold with an iPhone or iPad running iCMTGIS III or iCMTGIS PRO. The iCMTGIS III and iCMTGIS PRO apps will let you record a position by taking many GPS fixes and averaging them. They will also let you record an irregular property boundary by walking along the boundary. They provide the Point Stakeout (to guide you to the pins later) and Line Stakeout functions (for guiding you along the property boundary later). They also provide the Deed Calls functionality.

In summary, it boils down to the desired accuracy. Using an iPhone running Deed Calls or Deed Calls & Stakeout app might be adequate for a realtor or a forester (to do a quick approximate deed plot). Deed Calls & Stakeout is useful for someone who needs to find old stakes based on a deed plot. To record accurate stake positions, you will definitely need a much better GPS than the iPhone GPS. If you can accept a 2 m – 5 m (6 ft – 15 ft) error, then you could consider using the less expensive Dual XGPS-150A or Bad Elf GPS.

Do you have an app with enough accuracy to walk a property line, stake it and build a fence?

We have such apps for use on iPad and iPhone devices. The accuracy depends on the GPS receiver used.

The iCMTGIS PRO with EOS Arrow Gold or iSXBlue II+ GNSS is for performing a survey-grade job with high accuracy. This system has a high price tag. Consumer-grade GPS such as the Dual XGPS-150A or a Bad Elf GPS only claim 2 – 5 meter accuracy and are much more affordable.

App for entering heading and distance information from a platt map

“I want to find and map my property lines, I have 16 acres of woods and wetlands. I have located one survey marker and I have a platt map of my property with headings and distance to the next corner. Which one of your products would let me create a waypoint at the survey marker to use as the starting point and then enter the rest of the heading and distance information so that I can walk and mark my property lines and corners?”

The Deed Calls & Stakeout app will let you stand at the survey marker and get the GPS coordinates of that point as the starting point for entering the deed plot information (bearing and distance). If your deed document uses magnetic north, then you should enter the declination angle for your location into the Orientation field in the app. Then you can use the Line Stakeout function in the app to help you walk and physically mark your property lines and corners. This app works on iPhone and iPad devices.

Keep in mind, though, that the accuracy of your work depends on the GPS receiver used, and the built-in GPS receiver of the iPhone and iPad devices is not that accurate. Some of our app users use a compatible external GPS receiver, such as the Dual XGPS-150A or the Bad Elf GPS, to get 2 – 5 m accuracy. GPS receivers with sub-meter precision, such as the iSXBlue II and EOS Arrow, cost a great deal more.