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IECA releases design standards for silt fences and sediment basins
August 12th, 2021
Silt fence. Photograph courtesy of WINFAB USA The standards and practices committee has been convened by the International Erosion Control Association (IECA) board of directors to develop standards for the construction stormwater industry. The board recognizes local and regional differences in terminology and design of erosion and sediment control practices. The board also recognizes that […]
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) […]
Coastal protection solution with geotextile sand containers
July 15th, 2021
Photograph courtesy of NAUE Due to climate change, storm surges are becoming more frequent. The coast in the seaside resort of Lubmin, Germany, was exposed to several storm surges over a short time. In case of an additional storm surge, the existing coastal protection dune was in danger of breaking. In 2017 and 2019, a […]
Core & Main signs agreement to acquire L & M Bag & Supply
June 25th, 2021
St. Louis-based Core & Main LP, a leading specialized distributor of water, wastewater, storm drainage, fire protection products, and related services, announced that it has entered into a definitive agreement to acquire substantially all the assets of L & M Bag & Supply Co. Inc., and certain of its affiliates. The acquisition will mark Core […]
Machine-learning model doubles accuracy of global landslide “nowcasts”
June 15th, 2021
Every year, landslides—the movement of rock, soil and debris down a slope—cause thousands of deaths and billions of dollars in damages. Because terrain, characteristics of the rocks and soil, weather and climate all contribute to landslide activity, accurately identifying the areas most at risk at any given time can be an uphill battle. Early warning […]
Geotextile under articulated systems in slope armoring
June 1st, 2021
Q: I have a question about the geotextile placed under articulated systems in slope armoring. Based on my understanding, a drainage layer is recommended between the geotextile and the armoring structure, but, since the armoring structure has some spaces in between the armoring blocks, won’t the particles of the drainage layer be washed out through […]
A new specification for geotextile grout filled mattresses
April 1st, 2021
By George R. Koerner FIGURE 1 GGFM being filled incrementally. Courtesy of HUESKER Geotextile grout filled mattresses (GGFM), also referred to (in ASTM D18.25/D35.05) as fabric-formed concrete (FFC) or fabric-formed concrete revetments (FFCR), are erosion-resistant concrete linings made from durable, permeable fabric forms that are filled with high-strength grout. GGFMs are generally sloping structures placed […]
Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 2
April 1st, 2021
By James E. Sprague and C. Joel Sprague Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors. They are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowing water passage. However, SRD performance varies greatly in flow rate […]
IECA recognizes leaders at annual conference
March 9th, 2021
The International Erosion Control Association (IECA) announced winners for its environmental excellence awards during the joint 2021 IECA Virtual Annual Conference and Expo/Virtual Geosynthetics Conference 2021 in February. The IECA awards program recognizes outstanding achievements in the erosion and sediment control and stormwater industries. This year's awards recognized young professionals under 30 and under 40, […]
IECA Region One aligns association structure with strategic plan
February 18th, 2021
With the reunification of the International Erosion Control Association (IECA) Region One and Region Two, the IECA board of directors is making structural changes to support incoming members and to create a solid backbone for the future. Structural changes include: The board promoted Samantha Roe, IOM, to Chief Executive Officer of the association.Members from Region […]