green roofing system Articles

  • Rock case study

    ROCK, a long standing client for co2balance, talk about their commitment to put the environment at the heart of their business proposition. Rock have expanded their supply and contractual services from traditional roofing products to the provision of high tech "Green Roofs" and even "Green Wall" systems. Rock was in fact responsible for the construction of the largest Green Roof in the capital at ...


    By co2balance UK Ltd

  • Green Water Infrastructure

    Stormwater runoff is a major cause of water pollution in urban areas. When rain falls on roofs, streets, and parking lots, the water cannot soak into the ground. In most urban areas, stormwater is drained through engineered collection systems and discharged into nearby waterbodies. The stormwater carries trash, bacteria, heavy metals, and other pollutants from the urban landscape, degrading the ...


    By IWA Publishing

  • Catchment `greening` using stormwater in Adelaide, South Australia

    ABSTRACTThe paper reviews the goals of stormwater management adopted in Adelaide and declares a focus on harvesting of stormwater to replace mains water in irrigating areas landscaped with grass, flower beds and shrubs. Four categories of catchments are recognised according to their levels of pollution production - roof runoff and 'low', 'medium' and 'high' pollution runoff surfaces. Four case ...


    By IWA Publishing

  • A field study to evaluate the impact of different factors on the nutrient pollutant concentrations in green roof runoff

    The objectives of this study are to investigate the impact of different factors on the nutrient pollutant concentrations in green roof runoff and to provide reference data for the engineering design of dual substrate layer green roofs. The data were collected from eight different trays under three kinds of artificial rains. The results showed that except for total phosphorus, dual substrate ...


    By IWA Publishing

  • Constructed wetlands for urban grey water recycling

    Three differently configured constructed wetlands: a Horizontal Flow Reed Bed (HFRB), Vertical Flow Reed Bed (VFRB) and a novel constructed wetland (the Green Roof Water Recycling System (GROW) patent number GB 2375761) were compared for treatment of weak organic strength domestic grey water for reuse over a period of nine months. Influent and effluent were characterized in terms of standard ...


    By Inderscience Publishers

  • An evaluation of hydrologic modeling performance of EPA SWMM for bioretention

    Recent techniques should be investigated in detail to avoid present and future problems of urbanization like flood, drought and water pollution. Low Impact Development (LID) Best Management Practices (BMPs) such as bioretentions, green roofs, rain barrels, vegetative swales, and permeable pavements have been implemented to diminish the adverse effects of urbanization. In this study, a ...


    By IWA Publishing

  • Designing a rainwater harvesting system for urban green roof irrigation

    Green roof systems have been suggested to ease the growing urban environmental problems resulting from rapid urbanization. However, the irrigation of green roofs heavily depends on using precious potable water and consequently generates negative environmental effects. Rainwater has been recommended to address this dilemma, but the design method has not been well developed. In this study, the ...


    By IWA Publishing

  • Statistical evaluation of bioretention system for hydrologic performance

    Long-term retention performance is a common performance indicator for low-impact development practices, such as rain barrels, rain gardens, and green roofs. This paper introduces a numerical approach for the estimation of annual retention ratios of stormwater by bioretention. The annual retention ratio is taken as the ratio of the annual accumulated volume of stormwater retained by bioretention ...


    By IWA Publishing

  • Ecosystem-based management approaches for water-related infrastructure projects

    The Green Infrastructure approach refers to the natural or semi-natural systems that provide services for water resources management with equivalent or similar benefits to conventional (built) "grey" water infrastructure. This guide addresses one of the main barriers to widespread adoption of Green Infrastructure (GI) solutions: a general lack of awareness of the solutions and associated cost ...


    By IWA Publishing

  • A two-stage storage routing model for green roof runoff detention

    Green roofs have been adopted in urban drainage systems to control the total quantity and volumetric flow rate of runoff. Modern green roof designs are multi-layered, their main components being vegetation, substrate and, in almost all cases, a separate drainage layer. Most current hydrological models of green roofs combine the modelling of the separate layers into a single process; these models ...


    By IWA Publishing

  • Green roof hydrologic performance and modeling: a review

    Green roofs reduce runoff from impervious surfaces in urban development. This paper reviews the technical literature on green roof hydrology. Laboratory experiments and field measurements have shown that green roofs can reduce stormwater runoff volume by 30 to 86%, reduce peak flow rate by 22 to 93% and delay the peak flow by 0 to 30 min and thereby decrease pollution, flooding and ...


    By IWA Publishing

  • Growing substrates for aromatic plant species in green roofs and water runoff quality: pilot experiments in a Mediterranean climate

    Green roof technology has evolved in recent years as a potential solution to promote vegetation in urban areas. Green roof studies for Mediterranean climates, where extended drought periods in summer contrast with cold and rainy periods in winter, are still scarce. The present research study assesses the use of substrates with different compositions for the growth of six aromatic plant species ...


    By IWA Publishing

  • Contributions to the design of rainwater harvesting systems in buildings with green roofs in a Mediterranean climate

    Green roofs (GRs) are becoming a trend in urban areas, favouring thermal performance of buildings, promoting removal of atmospheric pollutants, and acting as possible water collection spots. Rainwater harvesting systems in buildings can also contribute to the management of stormwater runoff reducing flood peaks. These technologies should be enhanced in Mediterranean countries where water ...


    By IWA Publishing

  • The sustainable management of surface water at the building scale: preliminary results of case studies in the UK and Spain

    This paper reviews the devices suitable for building scale application and then outlines three case studies, two from Coventry, UK and one from Valencia, Spain. The first assesses the potential to retrofit an extensive green roof to the Frederick Lanchester Library, Coventry University. Costings are given, the structural strength of the building is investigated and various benefits of its ...


    By IWA Publishing

  • Balancing water demand reduction and rainfall runoff minimisation: modelling green roofs, rainwater harvesting and greywater reuse systems

    Recent years have seen a growing interest in more distributed approaches towards stormwater management, often integrated with other forms of distributed management of urban water such as water demand management technologies. This paper focuses on the role of green roofs (GR), rainwater harvesting (RWH) and greywater reuse and their integration at the building level. A number of models were ...


    By IWA Publishing

  • Wembley City - case study

    Wembley City is a development by Quintain Estate and Development PLC of 85 aces of land surrounding the new national stadium. The development will comprise of 4,200 flats, a designer outlet shopping facility, a new Hilton hotel plus retail, leisure and entertainment venues. The waste handling at Wembley is an important part of the infrastructure of the development. The main reason the Envac ...


    By Envac AB

  • Material selection for a constructed wetroof receiving pre-treated high strength domestic wastewater

    A constructed wetroof (CWR) is defined in this study as the combination of a green roof and a constructed wetland: a shallow wastewater treatment system placed on the roof of a building. The foremost challenge of such CWRs, and the main aim of this investigation, is the selection of an appropriate matrix capable of assuring the required hydraulic retention time, the long-term stability and the ...


    By IWA Publishing

  • Research and education - University of Illinois

    During the 2007-2008 academic year grants were awarded to Dr. Praveen Kumar and Dr. Art Schmidt in the Department of Civil Engineering at the University of Illinois, to implement a new data collection system on the Urbana campus. The goal of this project is the deployment of sensors to provide high-resolution, semi-realtime datasets for research and education. The resulting data is published in ...

  • Rethinking urban areas: an example of an integrated blue-green approach

    The provision of high quality urban water services, the assets of which are often conceptualised as ‘blue infrastructure’, is essential for public health and quality of life in the cities. On the other hand, parks, recreation grounds, gardens, green roofs and in general ‘green infrastructure’, provide a range of (urban) ecosystem services (including quality of life ...


    By IWA Publishing

  • Composting case study: Kurtz Bros tackles yard waste contamination

    Kurtz bros., INc. (Columbus, OH) supplies both consumers and landscape contractors with high-quality mulch, compost, soil amendments and topsoil. The company operates several organic recycling facilities throughout the state of Ohio spanning from Columbus (the state’s largest organic recycling facility) to Cleveland. Its local yard waste facilities accept everything from leaves and grass ...


    By Waste Advantage Magazine

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