Landscape Architect & Specifier News

JUN 2015

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 37 of 157

38 Landscape Architect and Specifier News (LID) techniques were used to accommodate stormwater runoff, including infiltration trenches and bioretention cells. The parking facility requires very little maintenance other than periodic mowing and yearly aerating. Wells provide irrigation water, reducing dependence on municipal water, and further reducing maintenance costs. "Using LID allowed us to turn an aging impervious site into a destination that no longer takes away from the environment, but now recharges groundwater and improves the environment," explained Darren Holcombe, P.E., LEED AP, the design team project manager at Cox and Dinkins, Inc. Concrete and other existing building materials were crushed for onsite reuse or sold for reuse off site. Existing asphalt pavements were milled and mixed into the soil for added structural support in grassed parking areas. A comprehensive bioinfiltration stormwater system was designed to capture and treat the first 1.5 inches of rainfall from all storms, the 95th percentile. Through the reduction of impervious surfaces and construction of the biofiltration system, postdevelopment run-off was reduced over 90 percent. The planting of over 900 tree species reduce the urban heat island effect, runoff and provides valuable shade for visitors to enjoy while tailgating. In paved areas, 'Silva Cells' were incorporated to provide a healthier environment for long-term root growth. 'Weeping Love' grass (Eragrostis curvula) was also planted in select areas, reducing the need for mowing and other ongoing maintenance. Editor's note: 'Weeping Love' grass, a native to southern Africa, was originally planted in the U.S. for erosion control and livestock forage, but is now also being used as an ornamental, along roadsides, in pastures and in mine reclamation or other severely disturbed landscapes. Above Silva cells (DeepRoot) provide long-term root growth for the new oaks planted by the concrete walk. Pictured are two stacked rows of cell frames (48'' long, 2' wide x 16'' high). Each frame holds 10 cubic feet of lightly compacted loam soil. A comprehensive bioinfiltration storm water system captures and treats the first 1.5" of rainfall (the 95th percentile). Wells supply irrigation, and the infiltration trenches and bioretention cells nearly eliminate stormwater runoff. Right The day shot offers a closer look at the 'Main Street' luminaires. The elevated lawn panel directly across the street from Williams- Brice Stadium provides an informal stage for cheerleaders, bands and the university mascot, a fighting rooster named "Cocky." NIGHT PHOTO: ALLEN SHARPE Below, Right The main pedestrian way is brick paving (Pine Hall Brick Co., 'Red and 'Red Flash'). The university's signature gates have brick walls ('Cokesbury' by Hanson) and brick columns with 'Wheat' colored precast column post caps and urns (Cast Stone Systems). Brick seat walls with concrete caps provide resting points along the route to the stadium. (Continued on page 40)

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