Presto GeoSytems | www.prestogeo.com
ADVERTORIAL
SUSTAINABLE PERMEABLE PAVEMENTS GEOCELL POROUS PAVEMENTS PROVIDE LOAD SUPPORT; STORMWATER BMP BENEFITS
FOR GRASS PAVEMENTS The 3D confinement structure with a 70/30 mixture of aggregate and topsoil creates a stable, load-bearing surface that is highly permeable. The pavement layer infiltrates stormwater, greatly reducing runoff from the area of application. A free-draining, coarse aggregate base designed below the pavement layer facilitates runoff storage and natural infiltration. Vegetated CCS pavements are suitable for occasional use traffic areas--overflow parking, road shoulders, firelanes and maintenance roads to utilities. The stable CCS pavement limits surface erosion and sediment loss. FOR AGGREGATE PAVEMENTS The 3D CCS system acts as a structural container for open-graded aggregate (low fines)—the aggregate locks up within the textured/ perforated CCS cell walls and prevents the stone from rutting. Aggregate CCS systems can function as onsite stormwater ‘basins’, storing water in the aggregate voids for eventual natural infiltration. An aggregate base is designed below the CCS layer, providing support for loads and additional temporary storage for rain events. Aggregate CCS pavements are suitable for normal traffic—parking areas, unpaved gravel roadways, and industrial yards
The GEOWEB® 3D Cellular Confinement System (CCS) is recognized by many states as a Low Impact Development (LID), Best Management Practice (BMP) permeable pavement solution and economical alternative to porous asphalt or concrete. Factors to consider in the design of grass and aggregate CCS permeable pavements include stormwater infiltration and storage, load reinforcement, tolerance to traffic frequency, and aesthetics. DESIGN CONSIDERATIONS The specific CCS design is dependent upon an evaluation of the CBR value of the subgrade soil below the system in conjunction with the weight and frequency of the anticipated traffic loading. Whether for restoration or new construction, the balance of any design issues relative to the interaction of the runoff with the subgrade shall be determined by the permitting agency and the design engineer as with any other porous pavement solution. Presto Geosystems, the GEOWEB CCS manu- facturer, offers a porous pavement tool with inputs for loading requirements, infill type, and subgrade strength--and returns recommendations for base depth, and values for runoff coefficient, and water volume storage.
Made with FlippingBook Annual report