A monolayer multi-axial integral geogrid suitable for stabilizing aggregate includes a plurality of interconnected oriented strands and partially oriented junctions forming a repeating pattern of outer hexagons having an array of openings therein. Oriented ribs extending inwardly from each of said outer hexagons support and surround a smaller inner hexagon having oriented strands thus forming a plurality of trapezoidal openings and a single hexagonal opening. The oriented strands and partially oriented junctions of the outer hexagons form a plurality of linear strong axis strands that extend continuously throughout the entirety of the geogrid and form additional triangular openings. The geogrid thus includes three different repeating geometric shapes. The inner hexagons preferably also can move up and down, out of the plane of the geogrid. The multi-axial integral geogrid thus provides a geometry that can better engage with, confine and stabilize a greater variety and quality of aggregates.

An erosion prevention system, a cell assembly and a kit of parts for such a system, and methods of making and installing such an erosion prevention system is disclosed. A cell assembly (2501) may comprise a plurality of cells (2520a, 2520b, 2520c) for containment of rock pieces, each cell having a bottom, sides/ends and a top each formed from wire mesh. A continuous length of wire mesh may wrap around and defines the upper, lower (2502) and end faces (2503a, 2503b) of the cell assembly (2501), the ends of the length being fastened together at an overlapping join positioned on the upper and/or end of the cell assembly. The continuous length of chain-link wire mesh may extend beyond at least one side face (2503d) of the cell assembly, thereby being configured to overlap at least a portion of the lower, upper and end faces of a corresponding second cell assembly when positioned side by side. The wire mesh may be chain-link wire mesh.

Disclosed are exemplary embodiments of submersible turf reinforcement mats that may include polymer and one or more additives. For example, calcium carbonate, zinc sulfide, barium sulfate, and/or other additives may be mixed or blended with the polymer such that the overall density is high enough to cause the submersible turf reinforcement mat to sink in water.

The present invention relates to an erosion control apparatus and methods of using and installing the apparatus. The apparatus is constructed to prevent erosion of soil during typical weather or tidal conditions and adverse weather events. The apparatus can include a plurality of anchored rolls and soil lifts operative to stabilize the shoreline.

A system for rolling up a flexible sheet may include a frame; a friction element mounted on the frame, the friction element having an endless friction outer surface with a sheet-engaging portion positioned to engage an end of the flexible sheet lying in a substantially horizontal position relative to the frame; and a drive connected to the friction element to move the endless friction outer surface such that the sheet-engaging portions thereof move upwardly to engage the end of the flexible sheet and lift up and roll the end of the flexible sheet over on itself to form a roll.

A soil reinforcement membrane that promotes grass, plant, and vegetation growth in a variety of temperatures and geographic locations and increases water retention. The soil reinforcement membrane is flexible enough to be placed on a variety of landscapes and promotes growth in a variety of soils. The soil reinforcement membrane consists of an upper layer and a lower layer with a cultivating compound dispersed uniformly between the two layers.

A water-permeable woven geotextile fabric for providing soil reinforcement and/or stabilization, for example as an underlayment in road construction, utilizes a series of round warp fibers, in combination with a series of flat warp fibers, across the width of the fabric to increase water flow while still providing desired filtration. In particular, the round warp fibers form angles that allow greater amounts of water to pass through the fabric. In addition, using both round and flat warp fibers results in increased roughness of the fabric surface, which makes the fabric more resistant to being pulled out of the soil when pulled on. Furthermore, one or more of the round and/or flat warp fibers can include a color selected for high visibility to the human eye in daylight conditions.

A silt barrier support system broadly comprising a number of vertically extending posts, a number of silt barrier attachment devices, a number of end silt barrier attachment devices, and an inward silt barrier attachment device. The silt barrier attachment devices include vertical barbs for vertically retaining portions of an upper end of a geotextile fabric layer on upper portions of the posts. The end silt barrier attachment devices include horizontal barbs for laterally retaining end portions of the geotextile fabric layer on end posts. The inward silt barrier attachment device includes first and second sets of horizontal barbs for removing lateral slack from inward portions of the geotextile fabric layer.

An elongated polymeric impermeable geomembrane sheet having opposing first and second surfaces with a plurality of spaced-apart first projections extending from the first surface, said first projections each tapering to a pointed apex at a distal extent, which first projections for mechanically engaging a synthetic drainage geomesh sheet overlaid by a tufted geotextile sheet and in contact with adjacent fill materials within the aggregation, whereby the aggregation has increased resistance to shear failure of the aggregation of fill materials and reducing stabilization failures of materials aggregation applications. A ground covering closure system is disclosed.

A perforated geocell is made from a plurality of strips that form cells. Each cell wall has a single pattern of perforations spaced evenly over the cell wall. This avoids uneven distributions of stress over the cell wall, reducing deformation of the geocell.