Abstract: A box culvert assembly and method of forming a box culvert assembly is provided. The boxes forming the assembly comprise portions configured to allow pivoted assembly of one box into another, while reducing the likelihood of high stress or fracture. The box assembly further allows for a generally tight seal between the boxes.

Abstract: A storm water drain system and methods of assembling the same are provided. The system can be arranged to provide a water management function such as retention, detention, conveyance, or infiltration. The system can include a plurality of support modules positioned adjacent to one another to form a top deck, a bottom deck, and an interior space between the top deck and the bottom deck. The plurality of support modules can include a support module that has a bottom corbel extending from an outer surface of the support module. The bottom corbel can be located within the interior space and have a surface that contacts a portion of the bottom deck.

Abstract: A storm water management system and methods of assembling the same are provided. The system has open columns having corbels that support a slab spanning between adjacent columns. The system is assembled by positioning a first plurality of slabs end-to-end and spaced apart from a second plurality of slabs. The column is seated into an opening formed between the first and second plurality of slabs. A first corbel extends from a first side of the column and over laps an edge portion of a slab of the first plurality. A second corbel extends from a second side of the column and over laps an edge portion of a slab of the second plurality.

Abstract: A segment for an annular structure includes an arcuate body extending between a first end and a second end. The segment includes a first plurality of interlocking portions extending from the first end and a second plurality of interlocking portions extending from the second end. Each interlocking portion includes a first leg and a second leg partially embedded in the arcuate body and a connecting portion connecting the first leg and the second leg, the connecting portion external to the arcuate body. The segment also includes a flange proximal to the first end and the second end of the arcuate body. Each flange includes a first spacing portion that extends radially outward from the outside surface and a second extending portion that extends distally from the main body portion.

Abstract: A box culvert assembly and method of forming a box culvert assembly. The boxes forming the assembly comprise portions configured to allow pivoted assembly of one box into another, while reducing the likelihood of high stress or fracture. The box assembly further allows for a generally tight seal between the boxes.

Abstract: A stormwater treatment device has an annular outer portion and an annular inner portion positioned at least partially within the annular outer portion, the annular inner portion offset from the annular outer portion to define a channel between the annular inner portion and the annular outer portion. A flow conduit within the annular inner portion connects to an inlet and has a plurality of openings within the inner portion. The annular outer portion has an outlet connecting to the channel.

Abstract: A box culvert assembly and method of forming a box culvert assembly is provided. The boxes forming the assembly comprise portions configured to allow pivoted assembly of one box into another, while reducing the likelihood of high stress or fracture. The box assembly further allows for a generally tight seal between the boxes.

Abstract: A box culvert assembly and method of forming a box culvert assembly is provided. The boxes forming the assembly comprise portions configured to allow pivoted assembly of one box into another, while reducing the likelihood of high stress or fracture. The box assembly further allows for a generally tight seal between the boxes.

Abstract: A box security cover comprising a box cover and a locking assembly. The box security cover can be positioned on a box, and the locking assembly can move between an unlocked position in which the security cover can be removed and a locked position in which braces of the locking assembly can contact interior surfaces of the box, preventing removal of the security cover from the box.

Abstract: A box culvert assembly and method of forming a box culvert assembly is provided. The boxes forming the assembly comprise portions configured to allow pivoted assembly of one box into another, while reducing the likelihood of high stress or fracture. The box assembly further allows for a generally tight seal between the boxes.

Abstract: A liquid purification and separation apparatus for separation of pollutants in stormwater runoff is disclosed. This apparatus utilizes gravitational separation and tortuosity, resulting from a plurality of baffles both perpendicular to and oblique to the primary water flow direction, to trap substances less-dense and more-dense than water. The apparatus features improved resistance to pollutant remobilization through treatment of water volume rather than flow rates, using vertically stacked water columns of varying depths to settle small particles. An overflow structure diverts excessive liquid without interfering with purification and separation, and can be placed integrally within or external to the apparatus receptacle.

Abstract: A liquid purification and separation apparatus for separation of pollutants in stormwater runoff is disclosed. This apparatus utilizes gravitational separation and tortuosity, resulting from a plurality of baffles both perpendicular to and oblique to the primary water flow direction, to trap substances less-dense and more-dense than water. The apparatus features improved resistance to pollutant remobilization through treatment of water volume rather than flow rates, using vertically stacked water columns of varying depths to settle small particles. An overflow structure diverts excessive liquid without interfering with purification and separation, and can be placed integrally within or external to the apparatus receptacle.

Abstract: A liquid purification and separation apparatus for separation of pollutants in stormwater runoff is disclosed. This apparatus utilizes gravitational separation and tortuosity, resulting from a plurality of baffles both perpendicular to and oblique to the primary water flow direction, to trap substances less-dense and more-dense than water. The apparatus features improved resistance to pollutant remobilization through an interactive hydraulic design process resulting in greater pollutant retention.