A method for slipforming a concrete trench drain channel using a slipform paving machine, said drain channel having frames defining an upper opening of said channel and adapted to receive a grate; and said frames therefor.

This invention concerns a coupling device including a detachable member 20 that can be attached to and detached from a grille, a first coupling member 21 and a second coupling member 22 provided on the detachable member 20, and a connecting member 23 provided on the detachable member 20 so as to connect the first coupling member 21 and the second coupling member 22, wherein the first coupling member 21 and the second coupling member 22 respectively include elongated holes, arc-shaped portions 51a, 51b provided on respective outer peripheral lower portions of the first coupling member 21 and the second coupling member 22, and semicircular arc portions that can be coupled to the grille, and the connecting member 23 includes a fixing shaft 24 that extends in a horizontal direction and is inserted into the respective elongated holes in the first coupling member 21 and the second coupling member 22.

An integrated ground surface system is provided for collecting and recycling de-icing fluid. The system includes: a permeable ground surface layer; a containment area located below the permeable ground surface layer, and comprising an impermeable liner to collect the de-icing fluid; a reservoir in fluidic communication with the containment area for storing the de-icing fluid; and an applicator device in fluidic communication with the reservoir to dispense the de-icing fluid.

An impact-absorbing assembly includes a covering layer being one or more of artificial turf, rubber mats, polymer mats, short pile carpeting, particulate infill, wood chips, and ground rubber chips. Also included is a layer of underlayment panels positioned beneath the covering layer. The panels have a panel section with a plurality of drain holes formed therethrough. A top surface of the panels is configured to support the covering layer. A bottom surface of the panels has a plurality of bottom projections that cooperate to define bottom channels suitable to permit water flow across the bottom surface, the bottom channels being in fluid communication with the panel drain holes. The bottom projections define a first spring rate characteristic that is part of a first stage and a second spring rate characteristic is part of a second stage, the first stage having a smaller volume of material than the second stage.

A ground covering comprising: a base panel including a sheet with an array of protrusions extending therefrom; a top panel including an array of receptacles for mating with at least a number of said protrusions; one or more drainage conduits formed through each of the protrusions, each drainage conduit being at least partially occluded by a baffle; and complementary engagement formations on peripheries of the protrusions and of the receptacles for fastening the top panel to the base panel.

Systems and methods for a ground water filtration system are described. The ground water filtration system includes paver blocks designed to facilitate liquid seepage between the paver blocks and to route the seepage to a preferred area. The ground water filtration system additionally provides at least one layer of stone to facilitate flow direction of the seepage to an outflow pipe. At least one geogrid fabric is also provided to further enhance ground water filtration.

A vehicle curb with advertising system including a bottom panel that is connected to a lower curved panel which is then connected to an upper curved panel. These panels distribute axial and translational forces, imparted by the vehicle's tires, by taking advantage of corrugation and curved designs. Further, the upper curved panel is connected to an upper retaining lip, which is then connected to a front concave panel, which is then connected to a lower front retaining lip. The two retaining lips contact the vehicle's tires and together with the concave panel, distribute the externally applied forces throughout the system. Further, the two front retaining lips provide an attaching means for a user to attach a logo or advertisement to the system. The system also has pads connected to the bottom panel that resist the externally applied forces by gripping the underlying floor, thus effectively stopping the vehicle without slippage.

A roundabout for vehicular traffic is provided from a plurality of modular blocks arranged in a generally circular roundabout pattern and affixed to a roadway or ground surface at an intersection of vehicle roadways. Roundabouts can be formed in any desired diameter. In some embodiments, the modular blocks can have a trapezoidal plan shape laid out in concentric rings. The trapezoidal shaped blocks can be cut from a length of board having a constant width and thickness. The modular blocks can be provided as a kit of parts delivered to worksite at an intersection of vehicle roadways where a roundabout is desired. Splitter islands, sidewalks, and curbing of blocks having appropriate shapes can also be provided.

A curb block system includes a main curb block and a male tubular block. The main curb block includes: a body case formed through injection molding of a plastic material, having an open bottom, and including a plurality of vertical partition walls arranged therein to form a plurality of empty compartments; semicircular female slots vertically formed at opposite ends of an upper surface of the body case to face other main curb blocks adjacent thereto, respectively, and the male tubular block is inserted into and coupled to adjacent female slots of a pair of adjacent main curb blocks, has a thickness smaller than the width of the female slot such that an array of the adjacent main curb blocks can be two-dimensionally curved at a predetermined angle in a horizontal plane.

Structural cells and matrices using the structural cells for positioning below a hardscape that define a void space therein, the structural cells, matrices using the cells and methods of assembly allowing in one embodiment the introduction of a structural fluid such as concrete to provide an alternative structural cell and matrix product. In one embodiment a structural cell assembly is described comprising a structural cell with a plurality of legs integrally linked to a frame at a first frame end, the frame linking the legs together and the frame defining a generally flat plane with the legs extending substantially orthogonally away from the first frame end about the frame flat plane to a leg terminal end; and a separate plate engaging the legs, the separate plate comprising linked sockets, each socket engaging the leg terminal end; and/or linked sockets, each socket engaging the leg frame ends or a part thereof.