Geogrid for Calgary road building

October 1, 2022  |  Final Inspection

Geosynthetic materials have proven their worth on (and below) surfaces across Canada, where they are being used in greater frequency to provide contractors with a stronger, more sustainable, and cost-efficient base for their projects. Canada’s road-building sector recently applied Titan’s Sparta…
A new name and other exciting changes

October 1, 2022  |  Editorial

As fall and winter approach, so do the many expos and conferences Advanced Textiles Association and Geosynthetics participate in. In mid-October our very own IFAI Expo, co-located with Sun Shading Expo North America, will take place October 12 through 14 in Charlotte, N.C. GMA Fall 2022 Lobby Days i…
Geogrid durability and cement

October 1, 2022  |  Q&A: GMA Techline

Q: I am searching for data or specifications pertaining to long-term degradation resistance of geogrid exposures to cement—more specifically, cement-treated soils. Your assistance would be greatly appreciated.
Underwater wick drain installation

October 1, 2022  |  Q&A: GMA Techline

Q:We have an underwater wick drain application in the Delaware River adjacent to the Delaware Memorial Bridge. S. T. Hudson Engineers Inc. is working with the Delaware River & Bay Authority (DRBA) on a ship collision protection system (SCPS) at the piers in the river. There is up to 50 feet (15 …
Designing Reinforced Soil Structures

October 1, 2022  |  Q&A: GMA Techline

Q: Why is strain compatibility important in designing reinforced soil walls?
Liner system leakage estimations

October 1, 2022  |  Q&A: GMA Techline

Q: What is the anticipated leakage rate through a composite liner (i.e., geomembrane on low-permeability soil) system?
Advanced Textiles Association introduces new logo, division name

October 1, 2022  |  Update

As discussed in the June/July issue of Geosynthetics, our association, Industrial Fabrics Association International (IFAI), has selected a new name, Advanced Textiles Association (ATA). And with the new name comes a new logo—as well as a new division name.
Wick drain installation considerations

October 1, 2022  |  Features

Wick drains are one of the most common and cost-efficient ground improvement techniques for soft fine-grained soils. Over the years, there has been substantial development on wick drain design methods; however, construction considerations may have not been sufficiently considered during the design p…
Geomembrane destructive testing

October 1, 2022  |  Features

For almost 40 years, the generally accepted destructive test rate for geomembrane seaming has been one sample for every 500 feet (152 m) of seam. On large projects this leads to hundreds of holes cut into liners that engineers, manufacturers and installers work very hard to make leak proof. With a t…
Drainage geocomposites and PVC geomembranes for highway tunnel lining

October 1, 2022  |  Features

The original design for the primary lining system for the Driskos Twin Tunnel along the Egnatia motorway in Greece, consisting of a PVC plasticized (PVC-P) geomembrane, called for a nonwoven geotextile, 500 g/m², as a puncture protection and drainage layer.