Show us why the public should always call a land surveyor

Where are you surveying?

How accurate are land survey measurements?

I get the same question a lot.  "Why can't I just survey my land with my phone?  It has GPS in it."  The truth is while smartphones are convenient and useful for many tasks, they are not suitable for professional land surveying. To ensure accurate and reliable results, it is important to use specialized equipment and software designed for accuracy and precision, and to follow established standards and procedures.   There are several reasons for this:

Limited GPS accuracy: The GPS in a smartphone is generally accurate to within a few meters, which is not sufficient for precise land surveying. Professional land surveying equipment, such as survey-grade GPS receivers, can provide accuracy to within a few centimeters.

Interference and signal loss: GPS signals can be affected by various factors, such as atmospheric conditions, nearby buildings or trees, and even the user's body. This can result in signal loss or interference, which can significantly affect the accuracy of the measurements.

Inadequate data recording: While smartphones can record GPS coordinates, they lack the advanced data recording and management features required for professional land surveying. Surveyors use specialized software and equipment to record and manage complex data sets, and to perform calculations and analysis.

Legal requirements: In many jurisdictions, land surveys are subject to legal requirements and standards that must be met for the survey to be recognized and accepted. Using a smartphone to survey land may not meet these requirements, which could lead to legal and financial consequences.

How accurate are land survey measurements?

how accurate is a land survey?Land survey measurements can be highly accurate, depending on the techniques and tools used in the surveying process. The accuracy of land survey measurements is usually measured in terms of the precision and accuracy of the measurements taken.

Precision refers to the consistency of the measurements, while accuracy refers to how closely the measurements match the true values. A high level of precision means that the measurements are very similar to each other, even if they may not be exactly accurate. On the other hand, high accuracy means that the measurements are very close to the true values.

Different types of land surveys may require different levels of accuracy. For example, a boundary survey may require higher accuracy than a topographic survey. The accuracy of land survey measurements can also be affected by various factors, such as weather conditions, the terrain, and the quality of the surveying equipment.

To ensure the highest level of accuracy, professional land surveyors follow established standards and procedures, and use advanced equipment such as GPS and laser technology. They also undergo extensive training and education to develop the necessary skills and knowledge to conduct accurate land surveys.

What is the difference between Accuracy and Precision in land surveying?

Accuracy and precision are two important concepts in land surveying that refer to different aspects of measurement.

how accurate is a land survey?Accuracy refers to how closely a measured value corresponds to the true or actual value of a particular feature or point on the earth's surface. In other words, it is the degree of conformity between the measured value and the actual value. Accuracy is important in land surveying because it ensures that the data collected is reliable and useful for decision-making processes.

Precision, on the other hand, refers to the level of consistency and reproducibility of the measurements. It is the degree to which repeated measurements of the same feature or point on the earth's surface produce the same result. Precision is important in land surveying because it ensures that the data collected is consistent and can be relied upon for comparison and analysis. To put it simply, accuracy is about how close a measurement is to the true value, while precision is about how close multiple measurements are to each other.

In land surveying, both accuracy and precision are critical for producing reliable data. High accuracy ensures that the measurements are as close to the true value as possible, while high precision ensures that the measurements are consistent and reproducible.

 

Votes: 0
E-mail me when people leave their comments –
Survey Legend

Justin Farrow - Creator of Land Surveyors United

You need to be a member of Land Surveyors United - Global Surveying Community to add thoughts!

Join Land Surveyors United - Global Surveying Community

Share your Surveyor Articles

Surveying Articles is a place for members to Share Land Surveying related articles, presentations and knowledge with the Land Surveyors United Community. Post or embed articles for future generations of land surveyors.

Surveying Articles and Presentations

Do you have an article about Land Surveying that you would like to share?

Land Surveying is a timeless art and science and it is therefore, evergreen! You may also know that a lot of older publications have gone away, unfortunately.   If you have written or published land surveying articles in the past, we would be honored for you to share them here with us.  If it is an older article, you can even republish it here with updates and reflections.  

class="block"Tip:   If you published an article in the past on one of the older sites which no longer exist, you can use the Wayback Machine to find it.  Then just copy/paste the old article inside a new post here.  Just be sure to tell us where it was previously posted.

Want to embed a PDF Document?

 If you have a PDF document or article related to land surveying that you would like to embed inside an article post, simply copy/paste the following code block into the HTML view of the post editor and replace the BOLD part of the code with the URL of the PDF you'd like to embed.   

Code to use:

<iframe src="https://docs.google.com/viewer?url=https://landsurveyorsunited.github.io/cssfiles/manuals/Surveying-Photos-Submitted-Land-Surveyors-United.pdf&embedded=true" frameborder="0" height="500px" width="100%"></iframe>

TIP:  You can also upload your PDF using the file upload button and then copy/paste the URL of the document you uploaded with the BOLD part of the code above to get a flippable PDF like so:

Uploading PDF land surveying documents to Surveying Articles

Differences between Forums, Blogs and Article posts

Forum Posts are great for asking questions which have a definate answer.  Forum posts are best for a quick exchange of information between Land Surveyors United members.   Please note that All Community Hubs have their own dedicated Forums so if your post is related to a specific hub, it is best to ask your question or share your tip inside the hub in which it belongs for targeted answers.  For example, if your question relates to Leica equipment, ask your question inside the Leica Hub forum for best results as all members inside that hub uses the equipment in question.  Likewise if your question pertains to a Location, you should consider making your post inside the appropriate hub.

Add Discussion

Blog Postsdiffer from Forum posts because you can embed and upload different kinds of information.  Blog posts are best for presenting information and updates for feedback and sharing.  When posting a Blog Post, you can also publish a short excerpt at the bottom which is what most members will see before reading the blog post.  Blog posts are also great for posting new surveying projects and digests of links to multiple surveying topics or your own website.   Things that can be embedded into Blog Posts are videos, images, slideshows, powerpoints, spreadsheets, PDFs, documents and more.

Add Blog Post

 

Articles are similar to Blog Posts in all ways except one.  Articles allow for you to post an Author Block at the bottom with links to your contact info, website information, credentials, etc. Similar to Blog Posts, things that can be embedded into Blog Posts are videos, images, slideshows, powerpoints, spreadsheets, PDFs, documents and more.  Similar to both types above, Hub Owners can add article sections and features to any hub they control on the community.

Add Article

Land Survey Guides