There is provided a plastic infiltration unit comprising: a top deck, at least one pillar extending from the top deck, wherein the at least one pillar includes a plurality of compartments, wherein at least one of the compartments is laterally enclosed, and wherein the top deck and the at least one pillar are produced in one piece. There is further provided a plastic base plate for use with a plastic infiltration unit. There is further provided a plastic infiltration unit side plate. There is yet further provided a plastic in filtration system for deployment underground comprising a plastic infiltration unit and a plastic base plate, wherein the at least one pillar of the plastic infiltration unit is received at the receiving location of the plastic base plate.

A connector for axially fixing a module or support of a module to an elongate pipe has a central web with a rear flange extending from a rear edge and a front web extending from a front edge. The web may be partially cylindrical with the flanges extending radially. The web is sized and shaped to mate with the outer surface of the cylindrical pipe and extend through a hole in the module support with the rear web against the rear face of the support and the front web against the front face of the support. A fabric layer is wrapped around the outside to conceal the support and connector. A fluid treatment unit with spaced apart modules utilizes the connector to fix the modules axially to the pipe with a fabric layer concealing the support and connector.

The subject of the application relates generally to the field of drainage elements, typically drainage channels, and covers thereof, as well as mixtures for production of such covers. Embodiments may include drainage element covers, meeting functional (water permeability, slip resistance, abrasion resistance, hygienic safety, strength, resistance to frost, etc.) as well as aesthetic requirements, and which would be suitable for applications in exteriors as well as interiors, and further propose a mixture for production of such drainage element covers. Functional and aesthetic requirements may be achieved by means of a mixture for producing drainage element covers, comprising aggregate and/or milled glass pulp and binder, and further comprising thixotropic additive.

A pumping system is provided. The pumping system includes at least one elongated tubing. The elongated tubing includes a first end forming an entrance and a second end forming an exit. A pump discharge tubing is disposed within the elongated tubing and runs from the first end to the second end of the elongated tubing. A pump is coupled to the pump discharge tubing and is operable to pump liquids through the pump discharge tubing. A seal plate is releasably secured to a flange formed at the exit of the elongated tubing. The pump discharge tubing snuggly runs through an opening formed through the seal plate and releasably secures to a manifold.

A pumping system is provided. The pumping system includes at least one elongated tubing. The elongated tubing includes a first end forming an entrance and a second end forming an exit. A pump discharge tubing is disposed within the elongated tubing and runs from the first end to the second end of the elongated tubing. A pump is coupled to the pump discharge tubing and is operable to pump liquids through the pump discharge tubing. A seal plate is releasably secured to a flange formed at the exit of the elongated tubing. The pump discharge tubing snuggly runs through an opening formed through the seal plate and releasably secures to a manifold.

A plastic arch-shape cross section corrugated stormwater chamber has a multiplicity of crest corrugations and valley corrugations which run transverse to its length. Sub-corrugations run along part or all of the arch-curve lengths of either crest corrugations or valley corrugations, or along both of them. A sub-corrugations are smaller in dimension than an associated crest corrugation or valley corrugation. Sub-corrugations may taper in width and depth and may taper to nothingness. A compound convex shape end cap, useful for closing off the ends of stormwater chambers, has substantially vertical corrugations with analogous sub-corrugations.

A plastic arch-shape cross section corrugated stormwater chamber has a multiplicity of crest corrugations and valley corrugations which run transverse to its length. Sub-corrugations run along part or all of the arch-curve lengths of either crest corrugations or valley corrugations, or along both of them. A sub-corrugations are smaller in dimension than an associated crest corrugation or valley corrugation. Sub-corrugations may taper in width and depth and may taper to nothingness. A compound convex shape end cap, useful for closing off the ends of stormwater chambers, has substantially vertical corrugations with analogous sub-corrugations.

A modular storm water retention system and method for exemplary uses collecting and temporarily retaining storm water run-off. The system includes a plurality of modular retaining units which are selectively connected together to form an interior chamber volume for collecting storm water run-off directed into the chamber volume. A plurality of modular trays are engaged with the top portions of the respective retention units to prevent relative movement of the retention units and eliminate, or substantially reduce, the need for porous material to be installed in and around the retention units greatly increasing the excavation void space usable for water collection and retention. The trays further support the backfill material and prevent passage of the backfill material into the void space below the trays.

In one representative embodiment, a trench drain comprises first and second end portions, a channel portion extending longitudinally from the first end portion to the second end portion, a continuous, unobstructed slot portion extending from and in fluidic communication with the channel portion, wherein the slot portion and the channel portion form an internal flow passage, and at least one gusset coupled to the slot portion and the channel portion and disposed external to the internal flow passage.

A warning device for detecting water level in drainage well includes at least one level sensor and a transceiver. The level sensor includes an antenna and a first processing unit connected to the antenna. The first processing unit controls the antenna to transmit a signal to the transceiver as to increased fluid levels. The transceiver includes a first communication module and a second processing unit, the first communication module receives the signal and the second processing unit obtains the signal from the first communication module and determines the location of the level sensor and its urgency according to whether the signal decays or disappears because of inundation by drainage fluid. The second processing unit further sends information of the target level sensor to a terminal device.