Geosynthetics: Update from Korea

June 1, 2006

The infusion of geosynthetics in Korea has been accomplished in a relatively short time. A look at potential growth, research, and markets. By Han-Yong Jeon 1. Introduction The geosynthetics industry in Korea is a promising field for investment and development. Many types of domestic geosynthetic products are produced and their applications and end uses are …

A garden grows on a Minneapolis rooftop

April 1, 2006

Architects, designers, and new geosynthetics build a high-rise green space. By Mason Riddle There is mesh and then there is mesh. For a downtown Minneapolis 10-story penthouse, the proper mesh was critical to the installation and maintenance of a rooftop garden and terrace, which, like the owner’s living quarters, affords impossibly spectacular views of both …

Berm is working on the railroad

Geosynthetic solution offers both separation and reinforcement for this Canadian rail project. Canadian Pacific Railway (CPR) is renowned for building rail lines through some of North America’s toughest terrain. Just west of Kenora, Ontario, near the Manitoba/Ontario border, the main CPR track crosses the Telford Marsh, an area of weak organic soil. A 250 m …

Eight ways to achieve improved retaining-wall performance

A refresher course for SRW success. By Michael R. Simac Segmental Retaining Wall (SRW) performance can be improved greatly by implementing good construction techniques. Since SRW construction started some 20 years ago, a number of good guidelines have proven to be at the core of a properly executed project. This article highlights those techniques and …

Geotube questions

From the GMA Techline Subject: GeotubeI refer to the article “Saving Yucatan’s Coast” published in the September 2005 issue of GFR (now Geosynthetics), pages 34-39. Can you please let me know the following: What mathematical calculation was used to derive the appropriate ground level? What was the length of each tube and the filling port …

Rejuvenated reservoir will irrigate world-famous golf courses

More than 21 acres of geomembrane help revive Pebble Beach’s Forest Lake Reservoir. Originally constructed in the late 19th century, a reservoir near a scenic stretch of California coastline underwent a dramatic transformation last year, and is now poised to serve the irrigation needs of the 21st century Pebble Beach community. Located on California’s beautiful …

Projects highlight progressive uses of geosynthetics

A problem-solving wall project in Michigan and preserving Stump Pass in Florida highlight two more progressive uses of geosynthetics. First section by Jacob Manthei, second section by Jeff Barbian and Ron Bygness Retaining wall, utilities merged in Michigan Developers and engineers have long tackled the problems with hilly building sites and are ever in search …

On the grow: Assessing the U.S. green roof market

Multiple benefits, new technologies are building up green roofs. By Sonja Hegman Green roofs are gaining in popularity as more people acquire knowledge on the subject. Awareness of green roofs as an eco-friendly concept is also being nurtured in the design and architectural communities. And building owners are not as dismissive of green roofs as …

The enhancement of interface shear strength between two nonwoven geotextiles

By Gregory N. Richardson and Pieter K. Scheer Introduction and problem statement Interfaces involving nonwoven to nonwoven geotextile surfaces are sometimes part of the design of landfill liner systems. This is most likely the case in a double-liner system where a geosynthetic clay liner (GCL) is often designed below the upper (primary) geomembrane and is …

Measuring puncture resistance

From the GMA Techline RE: Measuring puncture resistance How can I measure hydrostatic puncture resistance of a geomembrane in the field with different conditions (with or without geotextile)? [My company] uses geomembrane in agricultural pools. (Elham) Reply: The test you are looking for is ASTM D5716. It is a large burst test conducted by air …