W. R. Toole Engineers, Inc.
ENGINEERS * PLANNERS * CONSULTANTS
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MAKES HEADLINES WITH CONTECH ARMORFLEX
Mullins Pond in Evans, Ga., was designed as an agricultural use. In the years that ensued, the area shifted from an agriculturally based community to a progressive and developing town. As in many other communities, development resulted in increased storm water runoff, which exceeded the capacity of the existing pond and dam structure. In time, the Mullins Pond dam was compromised by repeated overtopping and eventually breached. In an area prone to floods, the Columbia County Board of Commissioners needed to increase the capacity and function of the pond.
W.R. Toole Engineers (Chad Sweeney, PE) designed a solution to the attenuating basin flows and flooding. Two dams were utilized on the project. The minor dam created a forebay that allowed the engineers to achieve the required water quality goals, and the major dam solved volume control.
Initially, cast-in-place, roller-compacted concrete was considered for the project, but ultimately ArmorFlex articulating concrete block revetment systems replaced that idea as the best solution. ArmorFlex is a flexible, interlocking matrix of machine-compressed, cellular concrete blocks of uniform size, shape and weight. The matrix is connected by a series of cables that pass longitudinally through preformed ducts in each block, rendering them easy to install over site-specific filter fabric on a prepared surface.
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