Tensar International Corporation, headquartered in Atlanta, Georgia, is a full-service provider of specialty products and engineering services. Its products and services are used in the cost-effective development of commercial, residential, industrial and municipal sites, as well as in transportation infrastructure.

Tensar International Corporation was formed from the merger of Tensar Earth Technologies and Tensar International Limited. The combined expertise and global production capacity has created a market-leading organization with unrivalled international coverage.

Prior to 1989, when it became a wholly owned subsidiary of Tensar Corporation, all sales, marketing and engineering activities in the relevant markets were incorporated within the organization of Tensar Corporation. Significant milestones in the Company's history are listed below:

1982		Installation of the first reinforced slope constructed in the Americas at La Honda in California. The application technologies used to design and build this and all future reinforced slopes were invented by the worldwide Tensar companies. Installation of the first reinforced slope in Canada for the Canadian Pacific Railroad near Watertown, Ontario. Installation of the first geogrid-reinforced haul road as part of an access road to a drill pad for Gulf Canada Limited.
1984		First full-height concrete panel retaining wall at the major Tanque Verde interchange in Tucson, Arizona. This project was the subject of extensive technical papers and media communications. It was also prominently featured in the durability study conducted on behalf of the Federal Highway Administration.
1986		The first vertical expansion of an industrial waste landfill in Alabama for Kerr-McGee. The use of Tensar Geogrids allowed the owner to construct a portion of the new containment dike on the iron oxide sludge contained within the original pond. This innovative construction technique, since duplicated in numerous other locations, increased the storage capacity by 83% while also saving more than $1 million over the alternative solution.
1987		Installation of the first geogrid-reinforced hurricane-surge control levee in Westminster, Louisiana. This levee stands as a landmark in innovation. Long-term performance of the levee was comparable to standard levees built at that time but the Tensar solution was far more cost effective because the levee was not only built on a Tensar foundation platform but the side-slopes of the levee were steepened using Tensar's reinforced slope technology. The result was a tremendous savings in soil required to build the levee and a corresponding savings in construction time. The technology used at Westminster has been subsequently used elsewhere, including the Route 147 project for the New Jersey Department of Transportation in 1993. The first vertical expansion of a municipal solid waste landfill at the Blydenburgh Landfill in Islip, New York. The closure of this landfill in 1987 set the now famous Mobro Garbage Barge on its well-publicized journey along the eastern seaboard in search of a landfill willing to take Islip's garbage. The innovative design, invented by Tensar, called for an 80-foot high, new "piggyback" disposal area to be constructed on a closed section of the old landfill. This project earned the 1989 Excellence in Environmental Engineering Award, as sponsored by the American Academy of Environmental Engineers.
1989		Tensar Earth Technologies Inc. was formed as a subsidiary of Tensar Corporation with responsibility for earthwork construction markets requiring relatively high engineering service needs. In later years these services were expanded to include assistance in: site planning engineering design permitting assistance architectural design construction planning construction materials management materials installation With the formation of Tensar Earth Technologies, Tensar Corporation became a holding company with no interests other than ownership of its subsidiaries. In this role, Tensar Corporation also provides certain corporate functions for its operating subsidiaries. The first major dam using geogrids was constructed for the U.S. Bureau of Reclamation in Ord, Nebraska. The Davis Creek Dam used Tensar geogrids to steepen the downstream slope of the compacted earth dam, thereby saving an enormous amount of soil and shortening the time of construction accordingly. The first cap of an industrial waste sludge pond was completed at a Boise Cascade facility in International Falls, Minnesota. A total of thirteen dikes with heights up to 45 ft. were constructed for the Transmountain Pipeline Tank project near the City of Burnaby in British Columbia, Canada. The technical achievements inherent in this project were the basis of an Award of Excellence granted by the North American Geosynthetic Society.
1990		The first Sub-Title D inboard steepened slope used within a municipal landfill at the Bradley West Landfill in California. Construction of the water theme park at a major resort park in Orlando, Florida, which incorporated Tensar "landform contour grading" reinforced slope technology. Working with the owner's in-house engineering staff, a 55 ft. high Tensar-reinforced "mountain" was constructed to provide the vertical relief required for the water slide. On the basis of their successful use of Tensar "landform contour grading" on this project, subsequent theme and water parks were constructed at the same resort facility in 1993 and in 1994 using the same technology.
1992		The United States Army Corps of Engineers independently and privately conducted extensive full-scale testing of Tensar Structural Geogrids and their various competitors, including both conventional construction materials and practices as well as competitive polymeric materials. The government found that Tensar products dramatically outperformed all competitive alternatives, and proved that several competitive polymeric materials provided little or no improvement over unreinforced structures.
1993		Installation of Tensar Biaxial Geogrids along I-270 in Maryland. This application allowed the Maryland Department of Transportation to expand I-270 by constructing the new lanes in the median of the existing highway. According to state officials, the use of Tensar on this project saved $1.3 million and 18 months of construction time. The first use of ADD³ System technology was utilized to cap the Babylon Landfill in New York. The challenge was to construct an economical yet aesthetic cap atop an overfilled landfill while complying with environmental regulations. The owner saved $12.5 million on this project by eliminating excavation and transportation costs associated with removal of waste from the site, as was required by the alternative conventional solution. Use of ADD³ System technology at the Millersville Landfill in Maryland to vertically expand an operating landfill within its existing footprint, thereby precluded the need to site a new facility.
1994		A Tensar foundation improvement system was used to construct a minimum footprint, low environmental impact haul road to access petroleum resources through approximately 100 miles of rain forest in Ecuador. This project set the standard for environmentally responsive road building in Amazonia. This project was also written up at the International Conference on Ecology in Transportation. Tensar completes the first use of a segmental retaining wall to directly support heavy train traffic at the Pearl Street overpass for the Massachusetts Bay Transit Authority. This project, near Boston, was designed to support heavy rail loads of up to 80,000 pounds. This Mesa retaining wall also supports light rail commuter train traffic.
1996		Tensar supplies its Uniaxial Geogrids together with engineering design services for installation of a "pressure relief" wall at the IRS Computer Center in Martinsburg, West Virginia. This "pressure relief" wall resisted the earth pressure that would have been applied to the building foundation walls, thereby removing the need for massive building foundation walls. This same technology was used at the John Paul Jones Arena for the University of Virginia in 2004.
1997		Tensar is used to construct "pressure relief" walls at the Pentagon in Arlington, Virginia. Georgia Ports Authority uses Tensar Biaxial Geogrid to complete a huge soil stabilization project in association with the expansion of the Port of Savannah.
2000		Mesa Retaining Walls are used to construct the Independencia-Vespucio overpass in Chile. This project represents the first use of a segmental retaining wall to construct a bridge abutment in South America.
2002		A Mesa Retaining Wall is used to construct a massive outdoor altar that is used by Pope John Paul II during his trip to Guatemala.
2003		Tensar BX1200 Geogrid is used for lateral reinforcement in adobe structures as part of the reconstruction of The Shunet el Zabib monument in Egypt. The Shunet el Zabib is the oldest monument of its size in the world, having been built in approximately 2700 BC.
2004		Tensar Geogrid is used to construct a new highway embankment for the Ecatepec to Texcoco highway in Mexico. Almost 2.5 miles of this highway embankment is constructed in the waters of Lake Texcoco at a standing depth of almost 6 ft. using Tensar's Prism and Spectra systems.