A ground stabilization grid which includes a series of polygonal shaped cells having x sides. The cells are formed by polymer walls having a wall height of between about 1 and about 6. Each cell shares a common wall section with at least two adjacent cells; and a majority of cells within the grid includes at least two reinforcing ribs extending across the cell to engage opposing walls of the cell. The reinforcing ribs are characterized by (i) engaging the cell walls between about 25% and about 75% of the wall height, and (ii) extending between different opposing walls of the cell.

Fall protecting flooring element that comprises a flat rectangular body of a resilient Material having a lower face, an upper face, four sides, patterns at its four sides that enable interlocking several similar flooring elements by form-fitting connections. Respective short straight corner sections are provided that constitute a part of the side of the concerned side. The patterns comprise alternating sequence of connection tabs and connection recesses. The connection tabs have identical profiles but inverse of the profiles of the connection recesses. A plurality of fall protecting floor elements can be connected together to form a flooring.

A support layer for supporting an artificial turf assembly. The support layer being formed of a polymeric foam, preferably having a density of between 20 and 70 grams per liter, such as a polyolefin foam; and having an upper side and a lower side, wherein in use the support layer has been placed with the lower side thereof on a base surface and supports, on the upper side thereof, the artificial turf assembly, the support layer including a plurality of through drainage holes extending from the upper side to the lower side for allowing liquid such as rain water to flow via the plurality of drainage holes from the upper side to the lower side, and also including a plurality of channels at the lower side for allowing liquid such as rain water to flow through the channels along the lower side, wherein each of said plurality of drainage holes debouches into one of the plurality of channels. The support layer is further included in an artificial turf system, that includes an artificial turf assembly with the support layer supported on a base surface such as a layer of sand, wherein the support layer forms, at the upper sides thereof, a closed support surface supporting the artificial turf assembly.

A support layer for supporting an artificial turf assembly. The support layer being formed of a polymeric foam, preferably having a density of between 20 and 70 grams per liter, such as a polyolefin foam; and having an upper side and a lower side, wherein in use the support layer has been placed with the lower side thereof on a base surface and supports, on the upper side thereof, the artificial turf assembly, the support layer including a plurality of through drainage holes extending from the upper side to the lower side for allowing liquid such as rain water to flow via the plurality of drainage holes from the upper side to the lower side, and also including a plurality of channels at the lower side for allowing liquid such as rain water to flow through the channels along the lower side, wherein each of said plurality of drainage holes debouches into one of the plurality of channels. The support layer is further included in an artificial turf system, that includes an artificial turf assembly with the support layer supported on a base surface such as a layer of sand, wherein the support layer forms, at the upper sides thereof, a closed support surface supporting the artificial turf assembly.

A support layer for supporting an artificial turf assembly. The support layer being formed of a polymeric foam, preferably having a density of between 20 and 70 grams per liter, such as a polyolefin foam; and having an upper side and a lower side, wherein in use the support layer has been placed with the lower side thereof on a base surface and supports, on the upper side thereof, the artificial turf assembly, the support layer including a plurality of through drainage holes extending from the upper side to the lower side for allowing liquid such as rain water to flow via the plurality of drainage holes from the upper side to the lower side, and also including a plurality of channels at the lower side for allowing liquid such as rain water to flow through the channels along the lower side, wherein each of said plurality of drainage holes debouches into one of the plurality of channels. The support layer is further included in an artificial turf system, that includes an artificial turf assembly with the support layer supported on a base surface such as a layer of sand, wherein the support layer forms, at the upper sides thereof, a closed support surface supporting the artificial turf assembly.

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.

Modular floor tiles include a first surface configured to receive weight. The first surface is supported by primary walls interior to and extending the full height of the tiles, and which may be intersecting to form a grid. Secondary walls of a lesser height support the primary walls, may be non-linear such as circular, and may support either side of vertices of intersecting primary walls. Joining members and corresponding receivers in the sides of tiles are dimensioned to engage one another from adjacent tiles to join the tiles and restrict lateral movement. Fastener(s) in each tile are associated with slots and may be selectively moved between unlocked and locked positions to restrict vertical movement. Some embodiments include cable channels with corresponding cover plates, and inclined portions providing ramps. Any number and combination of tiles may be connected to one another to form a modular flooring system.

There is described a panel assembly to be laid over a base surface and under a carpet-like top layer to install a multi-layered sports-playing field. The padding assembly comprises a panel comprising a top face and a bottom face, with the top face of the panel facing the carpet-like top layer and the panel further comprising drainage holes fluidly connecting the top face to the bottom face. The padding assembly also comprises a drain mat affixed to the bottom face of the panel with the drain mat operating as a fluid-permeable layer distancing the bottom face from the base surface. A method of installing a multi-layered sports-playing field is also described.

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.