Tag: Geotechnical engineering

20Aug 2016

Recent Webinar on Injectable Barriers™ is Popular Learning Opportunity

By Robert Armstead

The recent webinar Ground Works hosted on Injectable Barrier Walls, titled Trenchless Applications for Restricting Groundwater and Contamination movement, provided an excellent learning opportunity for engineers, environmental consultants or for those seeking to learn more about innovative applications for subsurface barrier walls, curtain walls or for stabilizing soils for trenching.

Robert W. Moody, Jr., Ground Works’ President, presented along with Tim Harmon, P.E. with Handex/HCR. They presented three case studies presenting environmental containment and control and seepage management for dams, dikes, levees, and water control structures. Some of these presentations included the FDOT SR7 Injectable Barrier Wall, FPL Headwall Installation and the Handex Consulting and Remediation FDOT Riviera Beach subsurface contamination groundwater restriction project.

The webinar lasted for about approximately 50 minutes, however the subject matter of the webinar must have highly intrigued the audience. Mr. Moody and Mr. Harman went on to…

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…

19Nov 2013

Installation of In-Situ Grout Wall for Florida Department of Transportation

By uretekhr

In this video, Bob Moody, URETEK’s Florida President, narrates the process and procedures for installing a 290 LF in-situ grout wall utilizing URETEK’s 486STAR rigid structural geotechnical polymer.

URETEK performed 490 injections at 58 points.  This created a hydraulic barrier that restricted groundwater movement from a contaminated site to a construction site where drainage features were being installed by FDOT.  This removed delays to the project as construction dewatering would have been impacted by the contamination.

The FDOT team received the Prudential-Davis Productivity Award for this project for utilizing an innovate process to minimize contamination impacts.  They also saved approximately $900,000 in costs.