Landscape Architect & Specifier News

MAR 2018

LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.

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Page 98 of 165

March 2018 99 I n f o r m a t i o n R e q u e s t # 5 7 5 ALSA Releases Guide on Water Efficiency An online, text-based guide by the American Association of Landscape Architects ( y8kqt65p ) on how to properly manage and preserve water was recently released. The guide is generally aimed at landscape designers, landscape architects and homeowners. It contains research, examples of projects and resources on the topic of water retention and sustainability. Bioswales, bioretention ponds, rain gardens, rainwater harvesting, water recycling and drip irrigation are all covered. The Federal Emergency Management Agency estimated that flooding in the United States cost $260 billion between the years of 1980 and 2013. Much of this water is wasted and it could be recycled to irrigate landscapes, or saved for human consumption. The online resource guide is composed of a set of links and ultimately aims to help educate landscaper architects on how to properly manage flooding, while also teaching homeowners how they can preserve rainwater for usage. Design Assistant Tool Presto Geosystems, ( http://www. php?number=4465 ), a porous pavement manufacturing company based in Appleton, Wisconsin, recently introduced its design assistant tool for engineers, storm water designers and landscape contractors. This 2010 award winning project implemented the first gray water reuse system for residential application in the Tucson area. It was designed to reduce water consumption by about 40%. Photo: ASLA 2010 Professional Residential Design Honor Award. Catalina Foothills, Tucson, Arizona / D. A. Horchner / Design Workshop, Inc. The new tool is a Microsoft Excel spreadsheet that assists in choosing product and input values for loading requirements, infill type and subgrade strength. Once these values are calculated, the tool will return recommendations for fill/base depth and values for runoff coefficient and water volume storage (with aggregate infill). The tool is designed to give a basic design for a pervious pavement; all designs should be verified by a qualified engineer. The tool provides AASHTO loading standards, or allows the user to input project specific values. The new porous pavement design assistant tool can be downloaded for free here: ( www.prestogeo. com/products/porous-pavement/ )

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