Preserving the Green of Dublin
Pervious concrete provides the solution for increasing access to one of Dublin, Ohio's most unique parks, while helping to protect the plant habitat of the creeping rock cress. Since this state-listed endangered species depends on natural groundwater seepage through the site's limestone cliffs, engineers from Hull & Associates used a pervious concrete parking lot to limit water drainage disturbances to the park's existing hydrologic pattern. Hull's engineers installed a monitoring device in the pavement to measure the surface's recharging ability. The project is one of the first of its kind in Central Ohio.
Trucks from Buckeye Ready-Mix of Reynoldsburg, Ohio, delivered about 140 cubic yards for the 18-car parking lot. Buckeye's quality control department consulted with its admixture supplier's representative on the first pour. Bob Banka, BASF Admixture's regional engineer, and Tom Rozsits, staff engineer from the Ohio Ready Mixed Concrete Association (ORMCA), provided technical help.
Pervious concrete's real champion on this project was Hull & Associates' Mark Bonifas, according to Warren Bass, ORMCA's vice president of engineering.
“Mark visited our office while he was gathering information for the project's design,” says Bass. Bonifas, at that time, was considering pervious asphalt as well as the pervious concrete.
Bass and his staff gave the engineer a sample of pervious concrete to share with his design team. ORMCA also provided the design team information that led to the product specifications and a list of potential bidders for the pervious concrete paving.
Spurred by the project's success, interest in pervious concrete has grown in Ohio. “We've recently developed a specifier's guide for pervious concrete pavement for freeze-thaw environments and clay soils,” says Bass. “We hope to have the document's final version available online in late December.”
Visit the ORMCA Web site at www.ohioconcrete.org.
To Learn More...
These organizations have bound together to develop programs such as Complete the Street. This program provides reasons why bike paths and walking trails should be included in every new project.
One good source of information is The Pedestrian and Bicycle Information Center, a clearinghouse for information about health and safety, engineering, advocacy, education, enforcement, access, and mobility. It features professionals who are very knowledgeable on walking and bicycling issues and who are truly committed to improving safety, health, and mobility for those who wish to walk or bicycle. You can visit the Web site at http://www.pedbikeinfo.org.
The Bicycle & Pedestrian Program of the Federal Highway Administration's Office of Human and Natural Environment promotes bicycle and pedestrian transportation accessibility, use, and safety. The FHWA makes sure states and other implementing agencies meet the program's requirements. The Web site is at www.fhwa.dot.gov/environment/bikeped.