drainage layer News

  • The Basics of Drainage Media Design

    In undertaking drainage design for soil-based cover systems, it’s vital to consider not just the thickness of the soil cover but also the soil cover permeability and drainage layer transmissivity. Drainage layer transmissivity is related to water flow through cover soil due to rainfall precipitation less surface runoff, soil water storage, and to a lesser extent, evapotranspiration (surface ...


    By Agru America, Inc.

  • Wavin Plastics launches new TwinWall fittings

    Wavin Plastics, the UK’s leading provider of water management solutions, has launched a new range of fittings for its TwinWall Drainage System to help installers achieve improved performance. The new fittings, which offer enhanced socket design and have considerable benefits over the existing ones, are currently being rolled out to customers. TwinWall is a cost effective pipe alternative for ...


  • Sydney tar ponds agency tender issued for protective cap

    The Sydney Tar Ponds Agency has released a tender for the construction of a protective cap over treated tar ponds sediment. "Today is good news for the people of Sydney," said Rona Ambrose, Minister of Public Works and Government Services. "This tender for the Tar Ponds cap will lead to the reclamation of nearly 240 acres of land and a cleaner and more sustainable future for residents." It"s the ...


    By GLOBE Foundation

  • Aquacell Lite Proving a Sustainable Asset

    Wavin Plastics’ sustainable urban drainage system AquaCell Lite is making a big impact on residential, commercial and industrial developments throughout the UK. Less than 12 months after being launched the LABC (Local Authority Building Control) approved innovation, designed to manage excessive rainfall and reduce the risk of flooding, is supporting a number of key projects across the country ...


  • Vegetative Roof Systems

    A new ASTM International standard will aid in the selection of lightweight aggregate best suited for use in the design and construction of vegetative roof systems. E2788, Specification for Use of Expanded Shale, Clay and Slate (ESCS) as a Mineral Component in the Growing Media and Drainage Layer for Vegetative (Green) Roof Systems, was ...


    By ASTM International

  • Tensar Enables Extreme Fluid Waste Stabilisation at Knostrop Sludge Lagoon

    To cap a 120,000sq.m lagoon containing ultra-soft sludge at Knostrop Waste Water Treatment Works (WWTW) adjacent to the A1M near Leeds, Yorkshire Water turned to Mott MacDonald Bentley (MMB) to devise a bespoke solution. MMB based their solution on experience gained from an earlier scheme on a smaller sludge lagoon, at Dowley Gap near Bingley in Yorkshire. In this project, MMB collaborated with ...


    By Tensar International

  • Compacted urban soils improved with composts have long-term benefits for tree growth

    Composting to compacted urban soils can provide a lasting effect that aids tree growth, new research indicates. Urban soils improved with added organic material are less compacted after five years compared with soils that have not been treated with organic composts, the study suggests. Urban soils are often compacted from the construction and repair of buildings, roads and pavements. Compacted ...

  • Green roofs as flood mitigation measures: how to improve performance

    Green roofs have been proposed to mitigate flooding in urban areas. This study combined field experiments and numerical simulations to investigate the ability of green roofs to absorb rainwater. The authors describe how green roofs can be most effective at mitigating flooding, providing findings which will be important for policy on green infrastructure. Rapid urbanisation has led to increases in ...

  • Tension Creep Testing in Geomembranes

    Creep, the tendency of materials to deform over time due to applied stresses, has been a focus of the geosynthetics industry since testing first began more than 25 years ago. Creep testing methods have evolved, but the accurate assessment of tension creep (along with transmissivity) remains essential to the product evaluations of organizations considering geomembrane/geocomposite drainage ...


    By Agru America, Inc.

  • MWH soft releases infoSWMM and H2OMAP SWMM version 8.5, leveraging the latest EPA SWMM5 functionality

    MWH Soft, the leading global provider of environmental and water resources applications software, today announced the immediate release of Generation V8.5 of H2OMAP SWMM and InfoSWMM for ArcGIS (ESRI, Redlands, CA). The new version adds powerful features and leverages engine enhancements included in the latest release of EPA SWMM5 (5.0.017). It also improves depth and performance by extending the ...


    By Innovyze

  • Northern US soil carbon reservoirs vulnerable to global warming, says USGS

    Mounting evidence shows that soil carbon is increasingly contributing larger amounts of carbon dioxide (CO2) to the atmosphere as a result of warming, permafrost degradation, and complex climate-biogeochemical interactions. Northern soils are known to harbor large amounts of carbon in the zone between the moss surface and the permafrost or mineral soil boundary. USGS Soil Scientist, Jennifer ...

  • Ecological approach used to remediate former mining site

    Cleanup of the inactive Burlington Mine site in Boulder County, CO, was initiated in 2003 as a voluntary cleanup overseen by the Colorado Department of Public Health and Environment (CDPHE) pursuant to the Colorado Voluntary Cleanup Redevelopment Act of 1994. An ecological approach was used to improve downstream water quality, reduce surface- and ground-water interaction with contaminated ...

  • New submerged membrane-module from MICRODYN-NADIR

    MICRODYN-NADIR has developed a new membrane-module for submerged water treatment systems. The new BIO-CEL® module is a membrane bioreactor (MBR) designed specifically for wastewater treatment.  MBR wastewater treatment systems are now becoming standard in many industries and in the treatment of municipal wastewater because of the high quality effluent and small footprint. The BIO-CEL® ...


    By MICRODYN-NADIR GmbH

  • News alert: new StormCAD release from bentley fully supports United Kingdom’s stormwater modeling requirements

    Bentley Systems, Incorporated, the leading company dedicated to providing comprehensive software solutions for the infrastructure that sustains our world, today announced the release of StormCAD V8i (SELECTseries 2) United Kingdom, a localized version of the easy-to-use StormCAD software employed by thousands of engineers around the world to analyze and design storm sewer networks. StormCAD helps ...

  • Tensar Wall and Slope Technology Speeds Brownfield Housing Site Start

    Tensar Technology is playing its part in the award winning transformation of a Brownfield site in County Durham. 250 new Yuill homes will soon stand on the former Elddis Caravan manufacturing and colliery site outside of Consett. Tensar’s rapid, cost-effective and environmentally sound technology has facilitated progress of the ongoing £3 million project. As an essential partner in the early ...


    By Tensar International

  • Laboratory study cuts fracking waste`s radioactivity

    Researchers believe they have found an unlikely way to decrease the radioactivity of some hydraulic fracturing wastewater: Mix it with the hazardous drainage from mining operations. The wastewater is created when some of the chemical-laced water used to fracture thick underground rocks flows back out of the wellbore. The water is tainted with chemicals, toxins and in some parts of the country - ...


    By Associated Press

  • All green roofs are not equal

    Green roofs, covered with growing vegetation, help conserve energy and water by cooling temperatures inside buildings in hot weather and containing storm water runoff. New research shows striking differences in the ability of different types of green roof to retain water. Researchers compared six different green roof designs with non-reflective black roofs and reflective white roofs. The ...

  • Tensar Erosion Control Technology brings vegetated bank benefits to suds surface water control schemes

    Increased local authority investment is required to improve water courses and surface drainage for water control and flood alleviation, following Government SUDS initiatives. As an alternative to hard stone and concrete finishes, Tensar International’s proven erosion control technology is creating flow resistant vegetated banks on projects around the UK and in Europe. Tensar’s RollMax ...


    By Tensar International

  • Innovyze debuts next generation integrated catchment modeling technology

    Innovyze, a leading global innovator of business analytics software and technologies for wet infrastructure, today announced the release of InfoWorks ICM Generation V2.0. Since its first release in 2010, InfoWorks ICM has rapidly become the solution of choice for integrated river, sewer and overland flow modeling by utilities, municipalities, local authorities and their consultants around the ...


    By Innovyze

  • Green roofs start to sprout on urban homes

    (AXcess News) New York - Every time it rained, Majora Carter cringed. 'I lived in mortal terror whenever I thought it was going to rain,' Dr. Carter says, remembering how the rainwater seeped from the street into her Bronx brownstone. Then she and her husband, James Burling Chase, realized that the source of the problem wasn't on the ground, but on the roof. The stormwater system in their ...


    By Axcess News

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