A building system comprising a combination of precast or prefabricated structural elements to serve as skate parks, swimming pools, or community gathering places; and to provide refuge such as tornado shelters. Precast or pre-manufactured modular cells have an open bottom, a first and second side wall, a rear wall, and a functional top surface. The functional top surfaces of the modules include an inclined or curved surface. When combined, the top surfaces form useful areas such as a skate park, swimming pool, or amphitheater seating. Sleeves, keys, and other features facilitate the assembly of the modules. A cast slab may be poured after assembly; or the modules may be secured to a slab. Example modules include a Flat Ramp Block, a Circular Ramp Block, and a Circular Bowl Block, a stair block, and a ledge block.

A digital video ramp assembly incorporates process-formed structural LED tiles with modular components that join in a system of scalable structural LED tiles forming a complete LED display structure with integrated LED embedded tiles with interlocking and inter-trans-positioning features sometimes requiring additional structural framing.

One aspect of the invention provides a pad including: a substrate; a first plurality of parallel ridges extending from a first side of the substrate, the first plurality of parallel ridges terminating in longitudinal alternating bevels; and a second plurality of parallel ridges extending from a second side of the substrate.

A digital video ramp assembly incorporates process-formed structural LED tiles with modular components that join in a system of scalable structural LED tiles forming a complete LED display structure with integrated LED embedded tiles with interlocking and inter-trans-positioning features sometimes requiring additional structural framing.

A modular ramp system includes a ramp component and a connector releasably joined to the ramp component. The ramp component has first and second inclined surfaces and a connecting portion positioned between the first and second inclined surfaces. The connector has a bottom side formed with a first and second coupling section connectible to the connecting portion. The connector is positionable in a first position in which one of the first and second coupling sections is releasably joined to the connecting portion of the ramp component and the other of the first and second coupling sections is adapted to releasably couple to a ramp or an external structure, and a second position in which the first and second coupling sections are releasably joined to connecting portion of the ramp component.

A wave-shaped ramp has two ascending platforms and a curved platform. Each ascending platform has a ground end, a tip end, and a slope. The tip end is higher than the ground end. The slope connects the ground end and the tip end. The curved platform is mounted between the two ascending platforms. Two ends of the curved platform are higher than a middle of the curved platform. With the curved platform forming a cavity shape between the two ascending platforms, the wave-shaped ramp provides more varieties in height, and thereby the player can perform more fancy stunts on the wave-shaped ramp. Besides, the wave-shaped ramp is a combination of the ascending platforms and the curved platform, so the wave-shaped ramp is separable and is capable of being stacked for storage.

A machine-mountable device facilitates removal of the cushioning acrylic and rubber layers overlying the concrete/asphalt base of tennis courts. The device includes: an attachment bracket, a support beam, a support plate, a scraper, and a stopper bar. The attachment bracket is configured to mount the device to any of one of several different transport machines (e.g., a loader, or forklift). The support beam is fixedly secured to the attachment bracket, and the support plate is secured to the support beam. The elongated scraper has a length between 12 and 20 inches, but is preferably between 14 and 15 inches, and optimally is about 16 inches long. The 16 inch scraper is releasably mounted to the support plate, and centered between the ends of the attachment bracket. The scraper removes the layers above the base, while the stopper bar causes the removed layers to simultaneously/automatically roll up like a carpet.

A machine-mountable device facilitates removal of the cushioning acrylic and rubber layers overlying the concrete/asphalt base of tennis courts. The device includes: an attachment bracket, a support beam, a support plate, a scraper, and a stopper bar. The attachment bracket is configured to mount the device to any of one of several different transport machines (e.g., a loader, or forklift). The support beam is fixedly secured to the attachment bracket, and the support plate is secured to the support beam. The elongated scraper has a length between 12 and 20 inches, but is preferably between 14 and 15 inches, and optimally is about 16 inches long. The 16 inch scraper is releasably mounted to the support plate, and centered between the ends of the attachment bracket. The scraper removes the layers above the base, while the stopper bar causes the removed layers to simultaneously/automatically roll up like a carpet.

A digital video ramp assembly incorporates process-formed structural LED tiles with modular components that join in a system of scalable structural LED tiles forming a complete LED display structure with integrated LED embedded tiles with interlocking and inter-trans-positioning features sometimes requiring additional structural framing.

A food truck park for mobile food trucks provides a destination with a unique atmosphere and improved layout for arranging the food trucks. The food park includes a parking area and a raised pedestrian walkway. The walkway includes extended pier portions that extend into the parking area. The extended pier portions define parking slips for the mobile food trucks. The walkway is raised with respect to the parking area to provide easy access to the service windows of the mobile food trucks. The food truck park may further include electrical hookups for the mobile food trucks.