The Geosynthetic Materials Association (GMA) offers the GMA Techline, a resource for technical questions about geosynthetics. E-mail: firstname.lastname@example.org for fast, free, direct answers to your technical questions.
GMA serves as the central resource for information regarding geosynthetics and provides a forum for consistent and accurate information to increase the acceptance, and to promote the correct use, of geosynthetics.
Browse the entries below list to find past answers highlighted in Geosynthetics magazine.
Designing and installing a floating roof cover to a circular concrete reservoir.
Leak detection system data for geomembrane liners.
A question on geotextile and geomembrane compatibility with typical landfill leachate.
Recommendations for plastic connectlons to insert into concrete blocks.
Where to find the typical requirement for the seaming of reinforced geomembranes.
Typical design codes include a routine for surcharge and many static and dynamic loads as well.
GCLs do not whale up from pressures, and HDPE pipe crushes when overstressed.
The highest that geomembrane manufacturers recommend for usage is between 150–170 F.
Connection of geosynthetic reinforcement can be either mechanical or frictional.
With landfill anchor trenches, normal stress would be higher but the approach is the same.
You have to test the interface of the specific HDPE-T with the specific NW-NP fabric.
From the very beginning of geotextiles, polyester (PET) and polypropylene (PP) fibers and filaments have been competitive for the manufacturing of nonwoven fabrics.
AOS is an empirical value that can only be assessed in light of the test method itself.
A reader needs some assistance in comparing two geosynthetic clay liners for a project.
Reader seeks geosynthetic fabric webbing or netting to be draped and sprayed with concrete.
The Purpose of Drainage for Green Roofs
The Purpose of Filter for Green Roofs
What are Geocomposite Drains?
Source: “How to Design Green Roofs & Landscapes” presented at the 2009 IFAI Expo, Sept. 22, 2009, in San Diego, hosted by the Geosynthetic Materials Association (GMA)