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    ABOUT PENHALL

    Penhall has been the United States' and Canada's go-to concrete services partner since 1957.

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    CONCRETE SERVICES

    Whether it's coring, flat sawing, wall sawing, or breaking and removal, we pride ourselves in our experience, expertise, top-of-the-line equipment, and unwavering commitment to safety.

    • CONCRETE CORING

    • CONCRETE CUTTING

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    • OPERATED EQUIPMENT RENTALS

    TECHNOLOGY SERVICES

    Our technology services provide industry-leading solutions in concrete scanning, private utility locating, digital x-ray imaging and fiber reinforced polymer, ensuring precision, safety, and efficiency.

    • CONCRETE GPR SCANNING

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    • PRIVATE UTILITY LOCATING

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    We're excited to offer you an engaging and informative session that will introduce you to our range of services, industry expertise, and innovative solutions. As a leading provider in concrete cutting, coring, and demolition, Penhall Company is committed to delivering top-notch service and exceeding your expectations. Grab your seat, enjoy a delicious meal, and discover how partnering with us can benefit your projects.

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    Penhall Company has had the opportunity to work on some of the most challenging and wide-ranging projects in North America.

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    LATEST PROJECT

    Ashtabula II Wind Farm Foundation Retrofit: Precision GPR Scanning and Core Drilling

    LOCATION: Denver, CO
    SERVICE: GPR SCANNING, CORE DRILLING
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CONCRETE SERVICES

GPR Concrete
Scanning

Ground penetrating radar (GPR) concrete scanning services allow you to cut and core more safely and efficiently. We use GPR to detect hazards in concrete before you commence cutting, coring, or breaking, mitigating the risk of injuries or project delays.

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How We Use GPR
Crew and Worksite Safety
What We Can Detect

GROUND PENETRATING RADAR (GPR)

We use ground penetrating radar to locate AND MARK critical subsurface features before you cut.

Penhall Company employs the latest, most advanced GPR technology, allowing you to conduct core drilling, saw cutting, and concrete breaking without accidents, injuries, or time delay. Our expert crew can scan and locate subsurface features with exacting precision, mitigating the safety risk to employees, and keeping your construction project on schedule.

New build construction and renovation projects often require cutting, coring, or breaking a concrete slab. This can be dangerous, as the potential to strike rebar, pipes, post tension cables, and electrical conduits is high. It is difficult, dangerous, and in some instances altogether impossible to conduct concrete drilling, sawing, or breaking without knowledge of the features below the concrete surface. Stopping work due to equipment damage, damage to the concrete structure, or worse, crew injury, can limit your ability to complete work on time.

GPR Ensures Safety

At Penhall, safety is our first priority. GPR allows us to locate the position of subsurface features, protecting the integrity and strength of the concrete as you cut, core, and break. Once a subsurface feature is detected, we clearly mark the location. This guides concrete cutters and drillers, allowing them to effectively break concrete without damaging machines or subjecting themselves to a safety hazard. Turning to Penhall’s concrete scanning services is a proactive step towards ensuring an accident-free work zone that meets completion deadlines.

GPR DETECTION

Our GPR services can detect a variety of subsurface features.

Identifying the type and location of subsurface features is a necessary step prior to cutting, coring, and breaking. There are a number of common subsurface features located within concrete. We analyze the data generated using GPR to determine the location and types of features present below the surface, giving you the ability to efficiently drill, saw, or break while preserving the integrity of the structure and reducing the need for patching or other costly repairs.

Rebar detection

Steel rebar is integral to the structural integrity of any concrete slab. Individual slabs of concrete can house hundreds of feet of rebar. With GPR, we can locate subsurface rebar and rebar patterns and precisely mark their locations, making it safe for you to cut, core, or break the concrete.

Post-tension cable detection

Post-tension cables are under extremely high tension. If post-tension cables are cut, they can break the concrete structure and pose an imminent threat to the safety of on-site crew. We can use GPR to locate post-tension cables, mitigating safety hazards and maintaining the integrity of the concrete.

Pipes and conduits detection

Electrical wires encased in conduits are often run through concrete slabs, and pose a shock risk. Not only are they safety hazards, cutting electrical wires can cause a power outage. This is a major inconvenience in terms of time and money. Using GPR, our expert crew can detect the location of pipes and conduits, preventing mistakes when it is time to cut, core, or break concrete.

Voids and deterioration detection

Voids in concrete—air gaps between the subgrade, dirt and the concrete slab-on-grade—occur over time due to erosion, compaction, and pipe ruptures. Voids and general deterioration affect the overall structural integrity of concrete slabs, but such imperfections are undetectable without specialized scanning equipment. We can use GPR to scan for voids and clearly mark their locations, ensuring that construction continues without the threat of collapse.

frequently asked questions

Are GPR and X-ray imaging the same?

GPR and X-ray imaging are not the same. GPR uses radar pulses to image the subsurface. This generates a graphic called a “radargram,” which features undulations of varying size. A trained GPR technician is needed to interpret the data, identify the features represented by the radargram, and mark where the features are located in the subsurface. 

X-ray imaging produces a clearer, more detailed view of the subsurface, meaning there is little or no need for data interpretation. However, X-ray imaging requires access to both sides of a concrete structure, making it impossible to use in many instances. 

GPR is a great choice for concrete scanning due to its flexibility, accuracy, and cost effectiveness

Does GPR identify the difference between rebar, post-tension cables, and pipes and conduits?

GPR detects subsurface features, but does not identify the type of subsurface feature. However, our crews are trained and have a wealth of experience using GPR and interpreting data. For example, there are specific markers—shape, size, and location—that tell us what the feature is, even if it is not immediately clear to the untrained eye.

How does GPR handle different soil or aggregate types?

GPR performs effectively across various soil and aggregate types. Accuracy levels can vary based on the material’s composition, for example GPR signals penetrate well through dry or non-conductive soils, but experience reduced clarity in wet or highly-conductive soils.

Can you scan through various materials like asphalt or rock?

Yes, GPR is versatile and can scan through materials like asphalt, rock, concrete and even ice. The technology is designed to detect subsurface features, voids and anomalies within these materials, making it suitable for many different applications.

Is real-time data available for review on-site?

Yes, our GPR systems offer real-time data visualization that allows operators to review subsurface information directly on-site. Immediate feedback helps the team to identify utilities, voids or obstructions quickly, enabling informed and efficient operations during the scanning process.

CONCRETE INSPECTION METHODS: GROUND PENETRATING RADAR AND X-RAY IMAGING

Construction projects are often delayed because of issues resulting from hazards embedded in a concrete surface. Ground Penetrating Radar (GPR) and Digital X-Ray Imaging can be used to find these hidden problems before they cause delays and cost you money. To learn more about different methods of concrete inspection and how to choose the right method on your next project download our Concrete Inspections Methods PDF guide.

DOWNLOAD GUIDE

WHY CONTRACTORS & BUSINESSES CHOOSE PENHALL

Penhall is committed to safety and quality. With decades of experience and years of combined expertise, our team provides cost-effective solutions that minimize downtime and exceed expectations.

  • Always on the cutting edge with the latest technology
  • Professionalism and courteous service
  • No job is too large or small

Trust Penhall, an experienced and trusted concrete cutting business, to deliver the precise results you’ve come to expect. Contact us today for a free quote and let us help you get started on your next job.

CONTACT US TODAY

  • Site Contact Information

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  • After submitting this form a Penhall Company representative will be in contact with you within 24hrs. If this request is urgent, please call 1-800-PENHALL to be connected with the nearest Penhall branch. Upon submitting this form you will also receive occasional news, offers and updates from Penhall Company. You may unsubscribe from these e-mails at anytime.

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  • About Us
    • Our Story
    • Leadership Team
    • Sustainability
  • Safety
  • Services
    • Concrete Services
      • Concrete Coring
      • Concrete Cutting
      • Demolition
      • Hydrodemolition
      • Structural Repair
      • Grinding & Grooving
      • Bridge Services
      • Scarifying & Shaving
      • Breaking & Removal
      • Operated Equipment Rentals
    • Technology Services
      • Concrete GPR Scanning
      • X-Ray Imaging
      • Private Utility Locating
      • Fiber Reinforced Polymer
  • Industries
  • Resources
    • Articles
    • Frequently Asked Questions
  • Contact Us
  • Find a Branch
  • Request a Quote
  • JOIN PENHALL COMPANY
  • Concrete Coring Company
  • Graff Company
  • About Us
    • Our Story
    • Leadership Team
    • Sustainability
  • Safety
  • Services
    • Concrete Services
      • Concrete Coring
      • Concrete Cutting
      • Demolition
      • Hydrodemolition
      • Structural Repair
      • Grinding & Grooving
      • Bridge Services
      • Scarifying & Shaving
      • Breaking & Removal
      • Operated Equipment Rentals
    • Technology Services
      • Concrete GPR Scanning
      • X-Ray Imaging
      • Private Utility Locating
      • Fiber Reinforced Polymer
  • Industries
  • Resources
    • Articles
    • Frequently Asked Questions
  • Contact Us
  • Find a Branch
  • Request a Quote
  • JOIN PENHALL COMPANY
  • Concrete Coring Company
  • Graff Company