Calendar

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  • Filters, drainage, and geotextiles in dams and levees

    • February 22–23, 2012

    The National Dam Safety Review Board presents Seminar #19, "Filters, drainage, and geotextiles in dams and levees" at the Federal Emergency Management Agencies/Emergency Management Institute in Emmitsburg, Md.

    The EMI campus, on the Maryland-Pennsylvania border north of Frederick, is the site for two days of technical discussions and an opportunity to network with other dam safety professionals from federal, state, and municipal governments, the private sector, and academia.

    For registration questions: Robert.Perry1@dhs.gov

    Information on registration and accommodations are available on the FEMA website: http://training.fema.gov/EMIWeb/DSTS/

  • EC12—IECA’s Environmental Connection

    • February 26–29, 2012

    The International Erosion Control Association’s annual Environmental Connection (EC–’12) conference is in Las Vegas Feb. at the Rio Hotel & Casino.

    Among the topics for the 2012 conference and trade show: effluent limitation guidelines (ELGs), stormwater and non-stormwater discharge issues, active and passive treatment for lowering turbidity, wetland and soil restoration, erosion issues related to mining, environmental impacts of green energy, bio-remediation and engineering for slopes, procedures and specifications for BMP selection and installation.

  • AATCC 2012 International Conference

    • March 21–23, 2012

    The American Association of Textile Chemists and Colorists will hold their annual conference at Hilton University Place in Charlotte, N.C., U.S.A. Conference will include three educational tracks (Concept 2 Consumer®, chemical applications and materials), poster session, student paper competition and an awards luncheon.

  • ASCE’s GeoCongress–’12

    • March 25–29, 2012

    “State of the art and practice in geotechnical engineering” is the theme for the 2012 edition of the annual GeoCongress of the American Society of Civil Engineers at the Oakland Marriott City Center in Oakland, Calif.

    Among the highlights for the 2012 conference and trade show: presentations specific to state of the art covering the geo-profession; Terzaghi, Peck, and Seed lectures; and technical sessions, panel discussions, short courses, workshops, and student activities.

  • IFAI Expo Canada 2012

    • March 29–30, 2012

    The annual IFAI Canada Expo features dedicated exposition hours on the exhibit floor, combined with a compelling and interactive program. The 2012 event will take place at the Delta Meadowvale Resort and Conference Centrein in Mississauga, ON.

  • NACE Annual Conference

    • April 1–5, 2012

    The annual conference of the National Association of County Engineers will take place in Lexington, with the Kentucky-based theme: “Racing to the Future.” Exhibit space and sponsorships are now available. Early bird registration discounts are available until Dec. 31.

  • 11th World Filtration Congress

    • April 16–20, 2012

    Will take place in Graz, Austria, at the Messe Congress Graz in the City Center, sponsored by the Austrian Chemical Society. Four technical short courses with more than 350 technical presentations will enhance the congress and exhibition, with more than 100 exhibitors anticipated. For information, visit www.wfc11.at.

  • 2012 SWIFA Convention

    • April 26–28, 2012

    Southwest Industrial Fabrics Association will hold its convention at the Hilton Garden Inn, Austin, Texas, U.S.A. The annual meeting, a market day, walking tour and a golf tournament will be included, as well as a workshop sponsored by PAMA on Friday, April 27: “Value-Added Selling and New Technologies.”

  • NTPEP–2012

    • April 30–May 4, 2012

    The American Association of State Highway and Transportation Officials (AASHTO) 19th annual meeting of the National Transportation Product Evaluation Program (NTPEP) is at the Sheraton Indianapolis City Centre in Indianapolis, Ind.

  • GeoAmericas

    • May 1–4, 2012

    The 2nd Pan-American Geosynthetics Congress is at the Westin Libertador San Isidro in Lima, Peru. It is organized by IGS/Peru Chapter, under the auspices of the International Geosynthetics Society (IGS).

    GeoAmericas 2012 will highlight the main topics and applications in the geosynthetics industry. Keynote lectures and selected papers will be presented on the conference’s primary themes:

    • Geosynthetics in Environmental Applications
    • Geosynthetics in Dynamic Applications
    • Geosynthetics in Hydraulic Applications
    • Geosynthetics in Mining Applications
    • Geosynthetics in Highway Applications Geosynthetics in Sanitary Applications
    • Case Histories

    New geosynthetics products
    The exhibition hall is designed for all interested companies and organizations to showcase their latest technologies, innovations, applications, and services for delegates and visitors.

    City & venue
    Peru is the fifth most-populous and third-largest country in South America. The capital, Lima, is called the City of the Kings because of its major role during the Incan Empire. Lima offers numerous museums, renowned cuisine, rich colonial architecture, and more.

    The conference venue, the Westin Libertador, is located in the heart of Lima, within the San Isidro neighborhood, one of the most attractive business, residential, and cultural areas of the city.

    The official language of the conference is English.

    For more information: www.geoamericas2012.com

  • Drainage and filter components for green roofs

    Sponsored by IFAI Expo

    The Purpose of Drainage for Green Roofs

    • Manage rainfall without sustaining damage from erosion/ponding of water
    • Provides void space and slope to transport subsurface water
    • Connects to roof drains, gutters, and scuppers and conducts water away from roof
    • Removes surface water from impervious surfaces
    • Maintains optimum growing conditions in the planting media

    The Purpose of Filter for Green Roofs

    • To prevent fine planting media particles from washing into the drainage layer
    • Prevents the reduction or clogging of drainage capacity
    • Usually a nonwoven geotextile, occasionally a woven fabric, is used

    Filter Components
    For retention:

    • The geotextile must have small enough openings to adequately retain the planting media
    • If not, soil particles will eventually clog the drain core

    For permeability:

    • The geotextile must have large enough openings to allow unimpeded flow of water
    • If not, hydrostatic pressure will build up and the planting media will not drain

    What are Geocomposite Drains?

    • A manufactured material that combines geotextiles and a polymeric core
    • The core composition varies in design and material
    • Geotextiles may be applied to one or both sides using heat bonding or adhesives
    • Geotextiles can filter, protect or hold water
    • Geotextiles are available in sheets or rolls that are overlapped or joined during construction

    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)