Soil Sampling Videos
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Can Ground Penetrating Radar (GPR) Detect Corroded Rebar in Concrete? - Video
In this video I answer the question "can ground penetrating radar (GPR) detect corroded ...
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Past, Present, and Future of GPR: An Interview with Greg Johnston from Sensors and Software - Video
In this interview with Greg Johnston from Sensors and Software, we discuss the history of ground penetrating radar (GPR), its current state of use in various industries, and what the future holds for GPR practitioners. LearnGPR.com is an online training platform for Ground Penetrating Radar that helps civil engineers, utility locators, and others learn about GPR through fun and engaging courses ...
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GPR Hotseat Episode 5: Mike Twohig SUM or SUE? History and Future of Subsurface Utility Mapping - Video
In this interview Mike Twohig from DGT Associates breaks down the history of subsurface utility mapping, talks about bad practice, who should be responsible, and the future of total asset documentation. He reviews 3D deliverables created from many field tools from several ongoing projects. If you use GPR and didn't know how this worked, then you should get further training. Check out our upcoming ...
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How to Show All of Your GPR Responses in A Single Image - Ground Penetrating Radar for Concrete - Video
Sometimes when working with gpr data we have responses from different features at different depths that dont show on all of the time slices. It can be tough to convey this information to a customer or even make acceptable interpretations. One way to overcome this is with an overlay function in gpr slice software In this video I show and compare traditional slicing with overlay analysis using data ...
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How Does Ground Penetrating Radar (GPR) Distinguish Between Rebar and Voids In Concrete? - Video
In this video I discuss the importance of color schemes and response polarity for distinguishing between rebar and voids embedded in concrete during ground penetrating radar survey. The polarity of the reflection can tell the surveyor so much about what is below the surface. Understanding this concept can help your interpret the subsurface with much greater accuracy. LearnGPR.com is the ...
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Background Filter for GPR - An Example Gone Right! - Video
Filtering your GPR (Ground Penetrating Radar) data can help enhance your ability to identify and interpret targets of interest, or, it can destroy your ability to see targets of interest. Practitioners must be careful when applying filters so they do not remove targets from the data set. One way to make sure that targets of interest are not being removed is to compare your data to its previous ...
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Multi-Frequency GPR Systems: Data Comparison (Ground Penetrating Radar) - Video
A recent trend in ground penetrating radar is the emergence of multi-frequency systems. These units have 2 or more GPR antenna on board which provides several benefits: 1. The systems can scan at different depths. 2. The higher frequency antenna will produce higher resolution. In this video, I show you how a 250 MHz antenna was able to identify a target that the 700 MHz antenna couldn't because ...
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A Comparison of Ground Penetrating Radar and EM Locators for Utility Mapping - Video
Will ground penetrating radar (GPR) make EM locators obsolete? In this video I compare these two technologies to see the strengths and weaknesses of each for utility mapping. AND YES...I KNOW...MY HEAD IS HALF CUT OFF!! Thanks for watching anyway :) LearnGPR.com is an online training platform for Ground Penetrating Radar that helps civil engineers, utility locators, and others learn about GPR ...
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Increasing Excavator Safety using EM and GPR: Interview with Mike Parilac from Staking U - Video
In this edition of the GPR Hot Seat we will talk with Mike Parilac from Staking U about increasing excavator safety using EM and GPR. How are these technologies being used on job sites? What are the struggles that owners have in training new technicians? How can these be overcome? What will the relationships be between excavators and private locate contractors in the future? LearnGPR.com is an ...
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GPR (Ground Penetrating Radar) for Utility Locating Webinar Replay - Video
In this live streaming webcast, LearnGPR will review the basics of Ground Penetrating Radar, compare GPR to other locating equipment, and answer questions about using GPR for utility locating. LearnGPR is supporting World Trenchless Day with this live event. Visit LearnGPR.com and sign up to receive free training videos every Monday in your inbox. LearnGPR.com is an online training platform for ...
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Best Practices in GPR: Interview with Shawn Patch - Video
In this video I interview Shawn Patch and Sarah Lowry from New South Associates about GPR survey, working with government agencies on geophysics projects, managing customer expectations, and common mistakes to be aware of. LearnGPR.com is an online training platform for Ground Penetrating Radar that helps civil engineers, utility locators, and others learn about GPR through fun and engaging ...
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Multiple Methods and Best Practices in GPR- An Interview with Brian Jones from GSSI - Video
Pre-order our new book Ground Penetrating Radar: A Practical Guide For GPR Users at http://learngpr.com/books. In today's GPR Hot Seat is Brian Jones from GSSI, a manufacturer of ground penetrating radar systems and other geophysical instrumentation. We discuss two recent articles written by Brian. In the first article, he summarizes the benefits of using multiple sensors for conducting ...
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Sensors & Software LMX Ground Penetrating Radar Quickstart Guide - GPR - Utility Locating Geophysics - Video
In this video we provide an overview of the LMX systems (relevant for LMX 100, 150, and 200). This unit is easy to use, lightweight, and rugged. It can be used for utility locating, archaeology, forensic investigation, civil engineering, geology and geotechnical engineering, etc. We cover set up, line scans, basic processing, interpretations, and grid scans. If you use GPR and didn't know how ...
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Free Introduction to GPR Webinar - Ground Penetrating Radar - Original Webinar - What is GPR? - Video
This was the first webinar I ever did on GPR! Hope you enjoy. In this video I discuss components of GPR, dielectric properties, wave velocity, uses of GPR, and show some case studies. If you use GPR and didn't know how this worked, then you should get further training. Check out our upcoming webinars, classes, and live workshops at LearnGPR.com. ...
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How to Find Gradebeams in Concrete Using GPR - Ground Penetrating Radar - Video
Many project sites need concrete gradebeams found and mapped before construction can begin. Sometimes this has to happen before the design phase. One of the best tools to use to identify subsurface gradebeams is #gpr. Ground penetrating radar can assist in detecting many different kinds of changes in the subsurface. In this case we could identify where the concrete was thickest. Also, we were ...
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Calculate Parameters for Low Frequency GPR Antenna - Ground Penetrating Radar - Geophysics - Video
This video was requested by a viewer that was working with a 100 MHz ground penetrating radar (GPR) antenna in limestone and was looking to investigate down to 7 meters below the ground surface. In this video I share the two main parameters that viewer will have to calculate to make sure his investigation is going to reach 7 meters and will have a close approximation of a full waveform with ...
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Start With Marked Graves - A GPR Lesson from A Cemetery - Ground Penetrating Radar - Video
It's always helpful to begin with something you know when trying to find something that you don't know. Using your ground penetrating radar to record information on a grave that is already marked will help you make interpretations in areas that don't have markers. Identifying the unique signatures from a cemetery on marked graves will give great foundational information regarding what a burial ...
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Proceq GS8000 Quickstart Guide - Video
In this video we go over the Proceq GS8000 SFCW ground penetrating radar used to map the subsurface. This is a great tool with a very wide range of frequencies and allows both the use indoor and outdoor because of the dual antenna arrangement. The system gives the user the ability to conduct extensive realtime processing, interpretations, and more. Let us know if you have any questions, need a ...
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On the Limits of GPR for Structural Assessments - Ground Penetrating Radar - Video
GPR is a great tool, but like any sensing technology, it has its limits. In this video I compare the ability of GPR and Ultrasonic Pulse Echo to identify the back of a slab and a 1mm delamination. As it is clear in the video, the GPR did a great job of identifying the back wall and could estimate slab thickness, but it struggled to identify the small delamination. The Proceq Pundit Ultrasonic ...
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Finding the Minimum Possible Depth of a Target Using GPR (Ground Penetrating Radar) - Video
How do you estimate depth of your GPR targets? How do you present depths to your customers? Do you present depths the same way in homogeneous soils as in heterogeneous soils? In this video I present the concept of Minimum Possible Depth (MPD) to help you cautiously and accurately present depth estimates to customers. Using this concept will help you explain the complexities of subsurfaces and GPR ...
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