Roof runoff water control systems for a building with gutters and a downspout and buildings without gutters. Both systems employ a swale in the ground that is lined with rock filled bags that are opened and laid overlapped end-to-end. For the downspout, a closed bag filled with rock is placed under the downspout with open bags filled with rock laid overlapped end-to-end in the swale and overlapped downstream from the closed bag. For a building without gutters and having a drip line in the ground, open bags filled with rock are laid overlapped end-to-end in the swale. The swale and the open bags are aligned with the drip line.

Roof runoff water control systems for a building with gutters and a downspout and buildings without gutters. Both systems employ a swale in the ground that is lined with rock filled bags that are opened and laid overlapped end-to-end. For the downspout, a closed bag filled with rock is placed under the downspout with open bags filled with rock laid overlapped end-to-end in the swale and overlapped downstream from the closed bag. For a building without gutters and having a drip line in the ground, open bags filled with rock are laid overlapped end-to-end in the swale. The swale and the open bags are aligned with the drip line.

Disclosed are exemplary embodiments of turf reinforcement mats that include spun yarns and/or multifilament yarns in either or both of the warp and weft directions.

Disclosed are exemplary embodiments of turf reinforcement mats that include spun yarns and/or multifilament yarns in either or both of the warp and weft directions.

A soil erosion inhibitor is provided that includes resin powder excellent in moisture absorption resistance. According to the present invention, a soil erosion inhibitor is provided that includes redispersible synthetic resin powder having a bulk density of 0.50 g/mL or less.

A soil erosion inhibitor is provided that includes resin powder excellent in moisture absorption resistance. According to the present invention, a soil erosion inhibitor is provided that includes redispersible synthetic resin powder having a bulk density of 0.50 g/mL or less.

A geogrid and a manufacturing method thereof. The geogrid comprises multiple ribs, and the multiple ribs are connected to each other at multiple junctions to form multiple cells. At each junction, two or more adjacent ribs of the multiple ribs are inserted into each other via inserts, and each junction is covered by a plastic material. The geogrid can easily be extended to a present state at a construction site, prevent tearing of apertures, prevent soil from leaking from the apertures, and prevent the inserts from rusting or corroding. Since the plastic material, the ribs, and the inserts are bonded to each other, separation strength at the junction is markedly increased. Preferably, an end portion of the insert is completely covered by the plastic material to form an end cap, and the plastic material and the ribs and the inserts are bonded to each other to form columns.

An impoundment closure system that employs a low permeability membrane on top of a waste materials with ponded water on top of the low permeability membrane.

An impoundment closure system that employs a low permeability membrane on top of a waste materials with ponded water on top of the low permeability membrane.

An integral geogrid includes a plurality of interconnected, oriented strands having an array of openings therein that is produced from a coextruded multilayer polymer sheet starting material. By virtue of the construction, the coextruded multilayer sheet components provide a crystalline synergistic effect during extrusion and orientation of the integral geogrid, resulting in enhanced material properties that provide performance benefits to use of the integral geogrid in soil geosynthetic reinforcement.