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ASCE Geo-Institute to stream Annual Live Streaming Web Conference
August 5th, 2021
The American Society of Civil Engineers (ASCE) Geo-Institute Technical Committees will be streaming their 6th Annual Live Streaming Web Conference, Dec. 6–10, 2021. Each day, top geotechnical professionals will present a diverse set of case histories. Each event will run two hours and includes opportunities to interact with presenters. Each registrant can earn 1.5 professional development […]
DFI announces winners of the 2021 Student Paper Competition
August 4th, 2021
Osama Drbe The Deep Foundations Institute (DFI) has announced the winners of the 2021 Student Paper Competition. Osama Drbe, a Ph.D. candidate at Western University, in London, Ont., Canada, is the winner of the Student Paper Competition. His paper is titled, “Effect of Negative Skin Friction on Abutment Piles Design.” The paper discusses a comprehensive […]
Preliminary injunction prohibiting Eurobent from manufacturing Tiltex in Poland upheld for third time
August 3rd, 2021
A fresh attempt by Eurobent Sp.z.o.o. to set aside the preliminary injunction that prohibits, within Poland, the manufacture, offering, importing and putting Tiltex on the market has failed. The Regional Court in Legnica, Poland, on June 8, 2021, dismissed Eurobent’s motion for setting aside the preliminary injunction order. This is the third time Eurobent has […]
Fabricated Geomembrane Institute offering sponsorships on webinars
August 2nd, 2021
The Fabricated Geomembrane Institute (FGI) is now offering an opportunity for member companies to sponsor upcoming FGI webinars. The FGI webinars have become popular in the geosynthetics and geotechnical engineering community. FGI is drawing hundreds of registrants to its live webinars each month, while presenting innovative technical content. To sponsor a webinar, please visit https://www.eventbrite.com/e/2021-fgi-webinar-sponsorship-tickets-133145231973. Webinar Sponsorship includes the following: […]
Design of a CCR composite liner system
August 1st, 2021
Q: We are designing a composite liner system for a coal ash landfill. From the bottom-up, the cross section is subgrade soil, geosynthetic clay liner (GCL), geomembrane, composite drainage layer with nonwoven geotextiles on both sides and then ash from coal combustion residuals (CCR). Do you have an opinion on the design, particularly on 3:1 […]
A special issue of Geosynthetics magazine
August 1st, 2021
In this special issue of Geosynthetics magazine, Jie Han, Ph.D., P.E., F.ASCE, of the University of Kansas, the 2021 Dr. Robert M. Koerner Lecturer and Awardee, has written a fascinating article, “Geosynthetic-Reinforced Column-Supported Embankments: Improving Practice with Better Theory,” summarizing the key contents of his Koerner lecture and emphasizing the important point: Improving practice with […]
A geotextile filter for an edge drain
August 1st, 2021
Q: I am doing a geotextile filter design for a highway edge drain. All I have from the site is a grain size analysis of the sandy subgrade soil. Can you point me in the right direction? A: First you are going to need to calculate an estimate of hydraulic conductivity for the sandy soil […]
Bluff repair in seismically active zone
August 1st, 2021
Q: I am doing a bluff repair on the West Coast in a seismically active zone. Can you direct me to where I can get some design guidance? A: The following references are excellent in regard to your question. National Concrete Masonry Association. (2009). “Guidelines for the design and analysis of mechanically stabilized earth (MSE) […]
Service life of nonwovens
August 1st, 2021
Q: Where can I find literature on the useful service life of nonwoven geosynthetic fabrics installed in soils? A: One of the best references in this regard is from a manufacturer of nonwoven geotextiles. It is: SI Geosolutions (now Propex). (1997). Smart Solutions, Technical Note, SM-404. “The durability of polypropylene nonwoven geotextiles for waste containment […]
Metal leaching from geosynthetics
August 1st, 2021
Q: Geosynthetics are made from polymers that use metal-based catalysts in their formulations. Do geosynthetics have the potential to leach metals into the environment? A: I think the fair answer to this is yes, but the potential risk is very small due to the long-term stability of the polymers used in geosynthetics and the very […]