Concrete Scanning to Avoid Conduit
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Nondestructive testing with GPR Concrete Scanning Services
used to image conduit, pipe, rebar, post tension cables, voids, mesh, concrete thickness. Like a X Ray .
Locate underground utilities using a concrete scanner. 2-D and 3-D images or maps are created by processing and printing the ground penetrating radar results. Hire a geophysicist to do the concrete scanning. Contact Art Fromm. a professional geophysicist who founded his company in 1985. He is dedicated to near surface geophysical applications (see Geophysicss.com). He has not only used ground penetrating radar to characterize concrete, he has successfully surveyed environmental sites, ice thickness in the arctic circle, ponds, dams, archaeological sites, cemeteries, graves, tile lines, utilities, and mine operations. As a ground penetrating radar concrete scanner he personally conducts and oversees the NDT ground penetrating radar surveys. Having spent a vast amount time in the field with sophisticated electronics, he is also capable of maintaining much of the equipment he owns, which leads to less down time.
Click here for geophysical services for geophysicists, engineers, geologists, military, and underground utility locators. These geophysical services are often used to map geology, locate underground storage tanks UST, find graves, archaeological investigations, map contamination, determine ice thickness, locate utilities, mining, map fracture and fault systems, shear wave surveys using MASW, detect voids, forensic investigations, agriculture, finding drain tiles, forestry, military investigations, and security applications. Many of these applications also fall into the category of engineering geophysics. A wide range of equipment can be rented from K. D. Jones Instruments.
In Fromm Applied Technology’s opinion
Desirable concrete scanning has to do with the personal approach of the concrete scanner.
Today we have available to us some of the greatest geophysical instrumentation ever manufactured. A geophysicist or concrete scanner needs to design his ground penetrating radar surveys around the site conditions and the clients desired level of confidence. However, the client needs to understand and accept that the laws of physics apply to concrete scanning and these laws need to be respected by the client for the concrete scanner to deliver desirable results. Then and only then geophysical non-destructive testing, such as GPR, can be implemented by a concrete scanner for utility locating, measuring concrete thickness, locating post tension cables, finding voids, locating plastic or PVC pipe, and as a rebar locator.
Estimators and proposal writers, when preparing a bid or responding to a quote requiring a concrete scanner be careful who or what you ask for. You are the people who create the budgets for the subcontracted services. You are part of the process for finding someone who provides reasonable services that can demonstrate
due diligence was exercised. A concrete scanner who provides professional services, often directly to architects, engineers, an upper management, is not typically in the business of providing concrete scanning services to fulfill a line item in a contract. I found over the years that concrete scanners are divided into two general groups. The first group provide concrete scanning as professional services and generally charge $1000 to $2000 per day per scanner. They also provide a written report with colored graphics. The second group of concrete scanners generally provide services to supplement or perpetuate their primary business. Their primary business is often in the construction trades and charge $300 to $500 per day. Don’t get me wrong, I am certain this second group of concrete scanners are good people with good intentions. However, their company’s primary concern is how fast can they get approval from a project manager or supervisor to cut the concrete. I have seen contractors cut through marked lines. There are some (not all) who’s only concern is to come in, cut, and install plumbing lines, heating lines, electrical lines, or pour the new slab. When something is hit, they commonly fall back on the argument that there are not any guarantees in geophysical applications. This mind set leads to the customer saying GPR doesn’t work and has the tendency to undermine the credibility of GPR concrete scanning. GPR works. Support of the above opinion is provided by reviewing the typical fees charged for professional services in general. There are few professional services offered for an average cost of less than $1800 per day. One needs to ask why doesn’t the 2nd group charge these rates? In my opinion, I believe it is because they are making their money on something else and provide concrete scanning to get the contract. I am not sure that engineers, architects, project managers, and building owners and operators would appreciate this approach, especially, after something was hit and they found out how their concrete scanner was hired. Additional support of the above opinion is provided by searching for other internet sites that offer concrete scanning services. Take a look at their content. Many sites that offer a concrete scanner at the lower rate offer a very limited amount of information about concrete scanning, which, at times, correlates to the services they provide. While this may be an overstatement of the types of concrete scanners and services, I am certain that this discussion rings true with those of you who have been there and done that. Click here to better understand the theory behind ground penetrating radar concrete scanning. Click here to better understand ground penetrating radar concrete scanning technology.
Ask before you contract,