David Vogel and Elise Young LAR 322 Environmental Issues and Ethics Spring 2007 Group Presentation Summary Implementing green roofs and living walls in our built environment is one way we, as stewards of the environment, can help to conserve and use energy efficiently. Both green roofs and living walls help keep buildings cool in the summer because of their thermal mass, the evaporative cooling from the plants, and in some cases direct shading of the roof. With a good mix of native plants varying in height, green roofs can be very effective in reducing energy transfer during the summer. In addition to those benefits, green roofs and living walls also have other aesthetic, economic, and environmental benefits. Information will be presented to aid in understanding the major terms concerning green roofs and living walls, understand why we should build green roofs and living walls, recognize how they are constructed, be aware of what plants can be used, and appreciate costs and practical considerations and limitations involved. Annotated Outline I. Title and subject of project: "Energy Technology: Green Roofs and Living Walls"II. Definitions of major terms(from Dunnett, 2-4, 127): (incl. images of examples) A. Green Roof: Roof covered with vegetation using layers of membranes, soil, and plant material. (photo of green roof)B. Ecoroof: Often used as a substitute for green roof, but sometimes distinguishes roofs that have not only vegetation but also some other ecological function, such as solar cells. (photo of ecoroof)C. Rooftop Garden: Accessible areas of a roof with containerized plants rather than layers of membranes, soil, and plant material. (photo of rooftop garden)
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