A grass ski carpet, comprising a plurality of spiral grass assemblies arranged regularly, wherein each spiral grass assembly comprises: a plurality of row brushes arranged in a same direction, wherein each row brush comprises a base bar and multiple pieces of spiral grass, the multiple pieces of spiral grass are spaced apart and fixedly connected to a first surface of the base bar, the multiple pieces of spiral grass are arranged in a same direction, each of the multiple pieces of spiral grass has a grass tip, a grass stem, and a grass root, the grass stem is curved, the grass tip is bulbous, and rotation directions of all the multiple pieces of spiral grass are same; and a base plate fixedly connected to each of the multiple row brushes through a detachable structure, so that the multiple row brushes are arranged on a surface of the base plate.

A method of installing a binder-based overlay system may include contacting a layer of geotextile fabric to a surface of a substrate and applying a primer layer to a surface of the geotextile fabric. Two or more binder layers including infill particles may be applied over the primer layer. A resurfacer layer followed by one or more color layers may be applied over the two or more binder layers. The primer layer, one or more binder layers, resurfacer layer, and two or more color layers may cure upon application to form a monolithic layer upon the substrate.

A method of installing a binder-based overlay system may include contacting a layer of geotextile fabric to a surface of a substrate and applying a primer layer to a surface of the geotextile fabric. Two or more binder layers including infill particles may be applied over the primer layer. A resurfacer layer followed by one or more color layers may be applied over the two or more binder layers. The primer layer, one or more binder layers, resurfacer layer, and two or more color layers may cure upon application to form a monolithic layer upon the substrate.

Sports field (1), comprising abase structure (10) and a cover (13), wherein the cover is at least partly permeable to fluid, especially water, wherein the cover comprises a top layer (41) and a shock absorbing layer (38A) provided between the top layer and the base structure, wherein the shock absorbing layer has upper (38T) and lower (38L) surfaces and comprises manmade vitreous fibres (MMVF) bonded by a cured binder, wherein the shock absorbing layer has a thickness (D38) between the upper and lower surfaces of between 12 and 40 mm and has a density of between 175 kg/m.sup.3 and 300 kg/m.sup.3, wherein the shock absorbing layer is hydrophilic, such that it can absorb a volume of water of between at least 20 to 95% of the volume of the shock absorbing layer. A method for forming a sports field and a method for operating a sports field are also disclosed.

A sports court can include a set of modular floor panels or tiles that are interconnected with each other and that have material compositions configured to provide increased friction when a ball or other game piece comes into contact with the top surface of the panels or tiles. The sports court can be used to decrease the speed or otherwise affect bounce behavior of a game ball as compared to a concrete slab or similar underlying surface on which the floor panels are positioned, thereby giving the court performance characteristics more similar to a conventional court used for ball sports such as tennis and pickleball and that are improved as compared to conventional rigid floor tiles. The material compositions can include rubberized or elastomeric materials with coefficients of friction measured using standardized testing procedures.

A resilient platform assembly has a playing deck with horizontally disposed deck panels. Each deck panel has a pair of foot flanges on the bottom of the deck panels. Receiving shoes are attached to the deck panels and configured to receive the foot flanges of the deck panels. A transverse member, perpendicular to the horizontally disposed deck panels, includes a plurality of notches. Each notch is cut in the transverse member in a predetermined spacing pattern. The receiving shoes are installed in the notches and the deck panels are attached to the transverse member through the receiving shoes. Resilient mounts connect the transverse member to a support assembly and allow relative motion between the transverse member and the support assembly. The resilient mounts include a first spring capture assembly attached to the support assembly, a second spring capture assembly attached to the transverse members, and a plurality of springs disposed between the first spring capture assembly and the second spring capture assembly.

A form for constructing a foundation for anchoring a pole vault standard to a support structure adjacent to a landing pad includes a first frame and a first plurality of connectors defining a first connecting pattern for coupling to a corresponding connecting pattern of a base of the first pole vault standard. The form is installable in the support structure and operable for use in fixedly connecting the first base of the pole vault standard to the form. A pair of forms may be employed for constructing a pair of foundations for anchoring a pair of pole vault standards to a support structure adjacent to a landing pad.

A method of installing a binder-based overlay system may include contacting a layer of geotextile fabric to a surface of a substrate and applying a primer layer to a surface of the geotextile fabric. Two or more binder layers including infill particles may be applied over the primer layer. A resurfacer layer followed by one or more color layers may be applied over the two or more binder layers. The primer layer, one or more binder layers, resurfacer layer, and two or more color layers may cure upon application to form a monolithic layer upon the substrate.

A method of installing a binder-based overlay system may include contacting a layer of geotextile fabric to a surface of a substrate and applying a primer layer to a surface of the geotextile fabric. Two or more binder layers including infill particles may be applied over the primer layer. A resurfacer layer followed by one or more color layers may be applied over the two or more binder layers. The primer layer, one or more binder layers, resurfacer layer, and two or more color layers may cure upon application to form a monolithic layer upon the substrate.

An ergonomic modular ergonomic multi-layer platform with a synthetic tapered marginal border including a non-compressible wood base covered with at least one compressible mat disposed between the wood base and a top non-slip mat to provide occupational workers with a therapeutic, forgiving work surface to protect them from the health risks of working, walking and standing on a concrete floor or common anti-fatigue mat used in many factories today. The therapy platform is raised off the floor to offer suspension, thus promoting a spring effect for absorbing and returning compression force resulting in reduced stress loads and compression force for people who work, walk or stand fort extended periods of time. The therapy platform is modular in design so that the tapered borders of separate modular sections connect for a snug fit. The vertical edges of the wood sections also have connection points that provide a leveling effect and further enhance the fit of the module sections.