Abstract: A liquid dispensing chamber for use with a drainage system for gathering and dispensing liquids to the ground is disclosed, which includes an elongated wall body having a generally arch-shaped cross-sectional configuration with a top wall portion and a pair of side wall portions thereby defining an enlarged enclosure therein, the elongated wall body including a first end portion and a second end portion, at least one of the end portions defining therein an axial opening to allow axial flow of liquids there-through, a plurality of circumferential reinforcing members disposed along the circumference of the elongated wall body for reinforcing structural strength thereof, and at least one side desk member disposed at least a location in the side wall portions of the elongated wall body. The at least one side deck member selectively includes a lateral opening therein for connecting a connection conduct thereto. Liquid drainage systems utilizing the liquid dispensing chambers of the invention is also disclosed.

Abstract: A gallery for guiding liquid through a leaching or drain field and allowing liquid to seep into adjacent ground is provided. The gallery includes an elongated main body portion having an undulating wall defined by a plurality of laterally spaced apart ribs, the undulating wall defining an outer surface and an interior space for liquid and particles to flow therethrough. A plurality of area enhancing elements are formed on the outer surface of the undulating wall for increasing a surface area of the outer surface to promote the growth and flourishing of the bacteria and other microorganisms on the outer surface.

Abstract: A lightweight and durable utility pull box for storing splices and junctions of underground coaxial cables, electrical wires, and optical fibers, having an elongated main body portion and end walls. The elongated main body portion is made of durable and lightweight plastic material for providing chemical resistance and structural integrity, has sidewalls with an arch-shaped configuration defining an enlarged inner enclosure for storing splices or junctions for electrical, telephone, coaxial cable or optical fiber cable, and has side walls with outer laterally extending strengthening ribs. The end walls cover the ends of the inner enclosure defined by the elongated main body portion. The elongated main body portion has at least one inlet opening for receiving the electrical, telephone, coaxial cable or optical fiber cable for splicing or joining together and storing inside the enlarged inner enclosure.

Abstract: A system for filtering, storing, and distributing groundwater, which includes a gallery having an elongated main body portion with an arch-shaped configuration with an enlarged inner chamber, having end walls covering each end thereof with an inlet opening for receiving the liquid to the enlarged inner enclosure, having side walls with laterally extending outer ribs and inner corrugations within the elongated body portion. The system also includes a collapsible filter having a hinged frame with a filtering material and a side portion for sliding into the inner corrugations of the gallery.