Geotextile specifications

October 1, 2006  |  Products

From the GMA Techline Subject: Definitions I am looking for information on geotextile specifications, specifically permittivity and permeability. Can you point me to a document? (John, New York) Reply: The specification that you want is AASHTO M288 that addresses various highway-related applications…
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Filter bags for ditch checks

October 1, 2006  |  Products

From the GMA Techline Subject: Filter bags for ditch checks We are looking for a type of geotextile fabric to specify for filter bags for temporary ditch checks. What we are looking for is a type of geotextile fabric that allows some water flow, probably about the same size opening as an FF-type fab…
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Waterproofing membrane liner for a salt storage building

October 1, 2006  |  Products

From the GMA Techline Subject: Waterproofing membrane liner for a salt storage building We are required to specify the above to be installed beneath an asphalt pavement floor of a proposed salt storage facility. What would be an appropriate product and specification for installation in accordance wi…
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Arizona road

October 1, 2006  |  Products

From the GMA Techline Subject: Arizona road I am a design engineer working on a road construction project in Arizona. The existing road is to be rebuilt, with 6 inches of asphalt concrete (AC) over about 12 inches of existing base. The city is concerned with groundwater and has instructed us not to …
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Cuckoo for coconet

August 1, 2006  |  Products

The growing geotextiles market can now add coconut fiber to its list of production materials. Domingo F. Panganiban, secretary of the Philippine Department of Agriculture, has announced that the Philippines will develop fiber-processing technologies that will focus on the production and market devel…
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Uses for marine mattresses in coastal engineering

August 1, 2006  |  Products

By Steven A. Hughes Purpose: The Coastal and Hydraulics Engineering Technical Note (CHETN) described herein provides basic information on the Triton Marine Mattress System, describes potential applications for marine mattresses in coastal engineering, and summarizes previous successful deployments o…
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Designing for geoelectrical liner integrity and leak-location surveys

August 1, 2006  |  Products

What to look for (and to look out for!) when designing lining systems for electrical integrity/leak-location surveys. By Ian D. Peggs As the need to perform geoelectrical liner integrity (for CQA) and leak-location (problem resolution) surveys becomes more of a regulated requirement, it becomes more…
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Sand-confinement grids from Geocell Systems

June 1, 2006  |  Products

In the wake of the floods following Hurricane Katrina, officials are working to figure out how to prepare and respond to other natural disasters involving flooding, and the need for improved water barriers. The U.S. Army Corps of Engineers (USACE) is now in the process of testing new, so-called &ldq…
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Biodegradable staple system introduced

June 1, 2006  |  Products

American Excelsior Co. and Uzet World Dublin have partnered to introduce e-Staple to the erosion-control industry. The devices offer an option in biodegradation from cold to warm conditions and will not soften during storage through humidity pickup. The e–Staple product can also be used on coa…
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Selecting reinforced fill soil for MSE retaining walls

June 1, 2006  |  Products

A full-scale field test is currently being conducted to establish properties for “high fines” reinforced soils and associated design controls that give acceptable MSE wall performance. By Richard P. Stulgis Mechanically Stabilized Earth (MSE) retaining walls on public sector transportati…
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