GMA Techline

The GMA Techline is an educational service GMA offers with goal of providing fast, free and direct answers to technical questions about geosynthetics. Your question posed on the Techline connects you with Dr. Robert Koerner of the Geosynthetic Institute (GSI). Don’t second guess, get expert advice.

Examples of Techline Q & A:

Q: What is the most used design method for drainage systems in MSEW with geosynthetics? Or what can I do for designing a system for drainage in the MSEW?
A: Click here

Q: Most of the tests based on ASTM geotextiles provide for conditions of temperature and specific humidity. Do these parameters greatly influence the test results if you change or vary?
A: Click here

Q: I would like to know the suitability of geocell as slope surface protection on acidic soil conditions. Can we apply geocell directly on top of the slope surface?
A: Click here

Q: 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?
A: Click here

Q: Is there any lab testing method or norm verifying the compatibility between polypropylene nonwoven geotextiles and shotcrete or concrete?
A: Click here

Q: How can you best provide base stability to a proposed bituminous asphalt tennis court through the use of geotextiles? Further, can a geotextile be used to provide base stability, longevity, and possibly reduce costs, such as gravel fill?
A: Click here