Tag: Ground Penetrating Radar

28Oct 2015

Great Sinkholes Documentary – Buried Alive

By Robert Armstead

In a recent PBS sinkholes documentary produced for the NOVA series, Sinkholes – Buried Alive, viewers learn about the geology that sets the stage for sinkholes across the globe, including karsts, limestone, gypsum, rock layers, salt domes and sandy soil.

The documentary also covers the warning signs for sinkholes and some of the experiments that geologists are conducting to understand how fast a sinkhole can occur, as well as the devastating effects of a massive storm dumping water onto the earth’s surface after water has been pulled from an aquifer for irrigation.

Most important, viewers learn about the different technologies and applications to detect and protect people and property from emerging sinkholes, including ground penetrating radar (GPR), soil testing, and different methods of soil stabilization.

19Aug 2014

How URETEK Repairs Mechanically Stabilized Earth (MSE) Walls

By Robert Armstead

What is an MSE Wall?

For more than 40 years, mechanically stabilized earth (MSE) retaining walls have been used to reinforce earthen structures, such as those found in constructing highways and roads, dams, bridge abutments, seawalls, dikes, golf courses, and other grade separation applications.

MSE wall systems are popular because they allow engineers, architects, and landscape and road designers to effectively integrate designs, that are cost effective and structurally sound, into tight site conditions.  Today, there are many types of MSE wall options including  geocells, segmental block, wire mesh and Bin-Wall.

Sustainability of MSE Retaining Walls

A major design concern for MSE structures has been their durability in the soil/water environments in which they are being used.  Problems begin when aging MSE walls begin to degrade and lose their structural integrity due to corrosion of the galvanized steel used in…

23Feb 2014

Lift Station Slab Stabilization

By uretekhr

When two separate attempts to seal water infiltration into a lift station failed using other technologies, the Toho Water Authority called on URETEK Holdings to utilize its Deep Injection technology as a final solution.

Prior to installation of the injection tubes, the Toho staff and the crew at Ground Penetrating Radar Services (GPRS), assisted in identifying the location of buried service connections so they wouldn’t be impacted during the repair.  The URETEK Team then hydro-lanced through the first ten feet of soil using this “soft” driving technique to avoid damage to underground utilities within the injection zone.

The repair commenced with installation of injection…