Abstract: A flexible arch-shaped corrugated structure includes a plastic structure that can be light weight and easy to handle, while at the same time having suitable strength for carrying loads. By suitably engineering the corrugations, the need for structural ribs can be eliminated and thinner sidewalls can be used. The structure can include a series of vertically-oriented arched corrugations having surfaces that convexly arch or curve upwardly as well as laterally. Having both upward and lateral arched or curved features on the corrugations can provide increased strength to the corrugations and the structure. In a particular embodiment, the plastic structure is a leaching chamber. The structure can include access or inspection port structures disposed at the ends of the structure. The ports are dimensioned to mate with the opposing port of a like structure. In particular, the mated structures can articulate or rotate about the mated ports.

Abstract: A flexible arch-shaped corrugated structure includes a plastic structure that can be light weight and easy to handle, while at the same time having suitable strength for carrying loads. By suitably engineering the corrugations, the need for structural ribs can be eliminated and thinner sidewalls can be used. The structure can include a series of vertically-oriented arched corrugations having surfaces that convexly arch or curve upwardly as well as laterally. Having both upward and lateral arched or curved features on the corrugations can provide increased strength to the corrugations and the structure. In a particular embodiment, the plastic structure is a leaching chamber. The structure can include access or inspection port structures disposed at the ends of the structure. The ports are dimensioned to mate with the opposing port of a like structure. In particular, the mated structures can articulate or rotate about the mated ports.