## Where are you surveying?

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Land Surveyor

### UNCERTAINTY ON SURFACE/VOLUME CALCULATIONS

When I started my career, I have been attracted by one (of many) question : how accurate is the surface/volume calculations knowing the uncertainties of the points that define these geometrical figures. I really wanted to know in term of standard deviation what would be the "end results".

The solution was to propagate the variances (standard deviation squared) into the functional model (the mathematical formula in short) and to retrieve the results I was looking for.

By taking the formula to deter

Land Surveyor

### SOFTWARE FREE BUBBLE GNSS ROVER RTK

Good news for all of you who are using a GNSS RTK without the fancy tilt meter and IMU onboard !

You can turn your today GNSS receiver to do the "free bubble style" by mixing up 2 technologies that popped up last year.

The first one is about software receiver as we learnt we can feed the digital signal processing part of a GNSS receiver into a smartphone and the second one is that we don't need to take the GNSS survey pole vertical !

My approach of this problem has been developed and tested alread

Land Surveyor

### THE DEAD END OF THE TRAVERSE METHOD

One of the typical survey method for determining station's points and survey details has been the traverse method. There have been considerable discussions on the way to "adjust" angles and distances and lot of rules of thumb while rigorous Least Squares Adjustment softwares are available anywhere.

I would say "too much" talks and controversial exchanges for a method that is simply not appropriated anymore considering modern instruments. Long traverses (geodetic) have been anyway replaced by usin

Survey Legend

### Amazing Survey Markers Around the World

With Survey Earth in a Day just around the corner again, knowing where your local markers are will come in handy when deciding where to submit a point from. Aside from our growing collection of Survey Marker Photos (photos tagged 'marker' inside the community), occasionally we will share marker photos on our Facebook Page which surveyors around the world respond to with, of course, their own marker photos.  Take a look at this post for example and the comments which followed.

Land Surveyor

### MODERN DATA COLLECTION-PLOT YOUR DISTOMETER MEASUREMENTS WHILE MEASURING IN AUTOCAD

Plotting while measuring saves time and make the drawing accurate with no ambiguities. Creating accurate drawings is painless with a Bluetooth enabled DISTO device. If you paired the Distometer with AutoCAD mobile app, the Plotting can be done simultaneously.

First turn on Bluetooth in both devices and pair them. See the image below.

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Thoughts: 1
Vendor

### NeoRTK GNSS Receiver for Surveyors

You may already be familiar with NeoRTK. However, if you are new to this name, NeoRTK GNSS Receiver is an all-in-one solution for survey. Working together with smart controllers, iHand20 or T17M, NeoRTK is ideal for application such as static data collection, CORS support, construction survey, staking-out, utilities, transportations and municipal facilities, etc. Download the brochure to get more details, click here. Learn more of NeoRTK, click here.

Land Surveyor

### Typical Surveyor's Report

Here is a typical Surveyor's Report attached to many of the jobs that I do. This particular Land Survey was extremely complex and difficult but I thought you might get a kick out of seeing how this is done. The names and other information have been altered to protect the innocent.

SURVEYOR S REPORT

DISCUSSION

The parent tract of the subject tract was originally described by Deed to Weldon L. Wells August 31, 1955 recorded in Volume 3014, Page 724 of the Deed Records of Harris County, Texas. The sub

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Thoughts: 1
Survey Legend

### New Vendor Group Hub for Posting Special Surveyor Promotions

A New Vendor Group Hub for Posting Deals, Special Promotions and Discounts has been added just for you!  Share Your Specials and We'll Share Your Post!

This new hub for vendors will allow you to run special promotions just for Land Surveyors United members.  Use this hub to post your specials and discounts by CREATING A NEW DISCUSSION inside this group.  The more information you include the higher your chance of having your post FEATURED and shared to other social media sites.

NOTE: We are beg

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Survey Legend

### Check out thisNEW YEARRENTAL SPECIAL!

Rent a Network Rover System

Including a Data Collector and Wifi Hotspot

for only

\$100 a Day
\$400 a Week
\$1200 a Month

We also offer a great option to purchase your rental equipment
if you happen to fall in love with the new member of your survey crew!

Additional rental items are also available

BE SURE TO TELL THEM YOU ARE A LAND SURVEYORS UNITED MEMBER!
813-999-8998
or
info@superiors

Survey Legend

### Incredibly Interesting Out-Of-Print Books for Geodetic Surveyors

I stumbled upon a few interesting books that you may find as interesting as I have. These books will be particularly interesting to geodetic surveyors  and those surveyors across the planet who annually participate in Survey Earth in a Day.  Flat- Earthers may find them to challenge their theories.

# A history of the determination of the figure of the earth from arc measurements

Publication date 1906
Topics
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