Liner thickness

October 7, 2009  |  Products

From the GMA Techline Subject: Liner thickness I use an equation from your Designing with Geosynthetics, 2nd Edition, to calculate liner thicknesses. Recently, I calculated a geomembrane thickness of 100 mils for a landfill with 200ft of waste. The supplier stated that he had never seen liner that t…
Geomembrane installations

October 7, 2009  |  Products

From the GMA Techline Subject: Geomembrane installations What are the pros and cons of letting a contractor proceed with the installation of a liner when the moisture content is lower than desired? (Marvin, New York) Reply: I have to make some assumptions before I answer your question. I assume that…
New publications from NAUE

September 2, 2009  |  Products

NAUE GmbH & Co. KG, a worldwide producer of geosynthetics, has announced the release of a new series of publications: “The Four Dimensions of Secugrid®.” These brochures take you through the four main “dimensions” that influence the Secugrid geogrids from manufacture …
Orton expands production of flat geogrids

August 18, 2009  |  Products

OJSC Orton, a subsidiary of SIBUR, Moscow, Russia, has expanded its production of flat geogrids by opening a new manufacturing facility in Kemerovo, Russia. The plant, which has a design capacity of 3,000 tons per year, opened under the Aprolat trademark. SIBUR invested in the project in an attempt …
Checkmate introduces Trigrid EX bi-axial geogrid

August 14, 2009  |  Products

Checkmate Geosynthetics Inc. has added Trigrid EX biaxial, a geogrid manufactured by Samyang Corp., to its product line. Checkmate has exclusive distribution rights of Trigrid EX in North America and will also offer design and technical support to customers who purchase the geogrid.
Cell geocomposite ideal for outdoor landscaping and roofs

August 10, 2009  |  Products

The AquaDrain, a cell geocomposite for subsurface drainage manufactured by Environmental Sustainable Solutions Ltd, Littleborough, England, features water retention cups to promote plant growth. Excess water is removed via the cell’s horizontal drainage capacity, which prevents flooding. The c…
New Caltrans guide for geotextiles

August 1, 2009  |  Products

A new design guide for using “subgrade enhancement geotextiles” (SEG) in road construction has been produced by the California Department of Transportation (Caltrans). The 18-page document is intended to assist pavement design engineers in five areas: What are SEGs and what functions do …
Infiltrator acquires Ring Group

August 1, 2009  |  Products

Infiltrator Systems has acquired Ring Industrial Group, manufacturer of the EZflow brand of geosynthetic aggregate drainfield systems. EZflow products are established in the onsite industry with 15 years of installations in more than 30 states and Canadian provinces. The EZflow geosynthetic expanded…
TenCate introduces new drainage geosynthetic

August 1, 2009  |  Products

TenCate Geosynthetics has introduced Mirafi MiraGreen™D for site drainage applications for engineers and architects designing environmentally sound projects. The product is a nonwoven drainage geotextile composed of 30% (LEED calculated) recycled content and it can be used in a wide variety of…
Design strength for GCLs

June 1, 2009  |  Products

By Timothy D. Stark Q: What design strength should be used for GCLs? A: If the GCL is not encapsulated between two geomembranes, the slope design should/must assume that the GCL will be fully hydrated at a low normal stress (e.g., 5–10 psi for a liner system). If the GCL will be encapsulated b…