FREQUENTLY ASKED QUESTIONS

CONCRETE SCANNING

What Types of Concrete Scanning are There?

GPRS provides two specific but different scanning services: elevated concrete slab scanning and concrete slab-on-grade locating. Elevated concrete slab scanning involves detecting embedded electrical conduits, rebar, post-tension cables, and more before core drilling a hole through the slab. Performing a concrete slab-on-grade locating service typically involves scanning a trench line for conduits before conducting saw cutting and trenching to install a sanitary pipe, water line, or something similar.

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How Is GPR Used To Identify Tendons Vs. Rebar In A Post-Tensioned Slab?

In post-tensioned structures, we typically find one mat of support rebar near the base of the slab. This mat is generally consistently spaced and remains at a constant elevation. Post-tension cables are generally found above this support mat and “draped” throughout the rest of the structure. The elevation of the cable is usually high near the beams and column lines and drapes lower through the span between beams and column lines. Knowledge of these structural differences allows us to accurately differentiate between components. Our Project Managers will leave you feeling confident in our findings and in your ability to drill or cut without issue.

Can GPR Determine The Difference Between Rebar And Electrical Conduit?

Ground penetrating radar can accurately differentiate between rebar and electrical conduit in most cases. We have an extremely high success rate in identifying electrical lines in supported slabs or slabs-on-grade before saw cutting or core drilling.

Additionally, GPRS can use EM locators to determine the location of conduits in the concrete. If we can transmit a signal onto the metal conduit, we can locate it with pinpoint accuracy. We can also find the conduit passively if a live electrical current runs through it.

The combined use of GPR and EM induction allows us to provide one of the most comprehensive and accurate conduits locating services available.

What Are Differences In Concrete Scanning?

GPRS provides two specific but different scanning services in this area: Elevated concrete slab scanning and concrete slab-on-grade locating. Elevated concrete slab scanning involves detecting embedded electrical conduits prior to core drilling a hole through the slab. Concrete slab-on-grade locating – a concrete slab poured directly over dirt – involves scanning a trench line for conduits before conducting saw cutting and trenching to install a sanitary pipe, water line or something similar.

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What Are The Benefits Of Concrete Scanning?

There are many benefits to utilizing concrete scanning services in your next project. Taking precautions like concrete scanning or utility locating can help keep your project on time, on budget, and safe.

If you fail to schedule a concrete scan and damage an unknown utility during an excavation, this is often costly to fix. The expense of these unnecessary repairs results in a loss of time and budget.

Why Do I Need Concrete Scanning?

When you’re excavating for a new structure or renovating an old building, there are countless subsurface hazards that need to be accounted for prior to excavation, core drilling or saw cutting.

If you choose not to schedule Utility Locating services, the result could be detrimental to your job site or company. There are compounding effects that could impact safety performance, project schedules, and job site financials that could delay or cancel the entire project.

We are the best at what we do because it is all we do. When you are faced with the need to know what lies below the surface, contact the nation’s best utility and concrete scanning company. Your project’s success could depend on it.

DISCLAIMER

GPRS does not investigate, analyze, or interpret soil composition, soil conditions, or geological or geophysical information. GPRS reports retrieved data and does NOT provide geophysical, geological, engineering, or land surveying services. Please contact a professional in those fields if such services are needed.