Locating column rebar with Ground Penetrating Radar (GPR) on exterior column faces at a hospital in Portland OR. Findings were marked directly on the column surface to facilitate installation of seismic reinforcement braces. Floors 10-17 were scanned. Columns were safely accessed with “swing stage” apparatus.
(read more)Tag: 2D GPR
Gas Leak at Community College
Concrete GPR LLC was called out to a local Community College on a rush job to investigate air bubbles escaping an asphalt loading dock. The client thought it was compressed air. We quickly determined that it was natural gas. Injury was prevented and the leak was safely repaired.
(read more)Video: Locating Rebar and Conduit with GPR
Locating structural rebar and conduit hazards with Ground Penetrating Radar (GPR) on an elevated concrete slab at the University of Oregon. Findings were marked directly on the slab surface, allowing plumbing and MEP subcontractors to safely layout and core drill to install piping. Rebar is marked in purple; conduits and other hazards are marked in orange.
(read more)Video: GPR Scanning Precast T-Beams
Locating rebar and pre-stressed cables in precast T-beams with ground penetrating radar (GPR).
The bonded pre-stressed cables in the stem of the T-beam are marked with high-visibility orange. Overall, the four pre-stressed cables have a draped elevation and are closest to the bottom of the stem at the midpoint of the beam. There is some variance in the elevation profiles of the cables however. In the middle third of the beam, all four cables are aligned at the same elevation. In the outside third of the beam, the two outside cables rise to a higher elevation.
(read more)Video: Locating PEX tubes with GPR
Using ground penetrating radar (GPR) to scan a concrete slab and locate radiant floor heat PEX tubing. Results are marked directly on the concrete with this real-time 2D method. Rebar is also marked to help with drilling.
GPR is ideal for locating PEX tubes in concrete regardless if they are filled with air or water. X-ray technologies aren’t feasible for these slab-on-grade challenges. Accurate results with GPR for PEX are dependent on operator expertise and equipment quality. Concrete GPR LLC technicians have over a decade of experience, and use the most current digital GPR equipment available.
(read more)The Joint at Slabtown
This project demonstrates how we can adapt to unexpected challenges, overcome them quickly, & keep your project moving forward on schedule & within budget.
(read more)Fair-Haired Dumbbell
Concrete GPR provided advanced ground penetrating radar services to several trades during the construction of the Fair-Haired Dumbbell, in Portland Oregon.
(read more)Utility Mapping Courtyard Drain Pipes
Problem An open air courtyard with approximately 80 drains is experiencing poor flow and water backup from a random assortment of drains. An adjacent roof drain is backing up as well, and is presumed to connect to the same drainage system. The subsurface piping and connections between these drains is unknown and has made it […]
(read more)Locate PEX Tubing in Concrete
Locating PEX tubes in concrete is just another day at the office for us. On this project, we marked up the location of all PEX tubing in an 18′ x 60′ area. The tube layout is great. It wraps around some existing equipment from the original installation with unusual bends and whorls. Everything went great […]
(read more)Backfill Mystery
We were called to ensure the area was clear of high voltage conduits prior to excavation. With our expertise and cutting edge GPR imaging equipment, it should have been a quick one-and-done. Years of experience, however, has taught us to never underestimate a project, especially a very old concrete slab. The good news: there weren’t any […]
(read more)