Synthetic turf, rubber shock pads, athletic track surfaces, stadium seating, metal bleachers, perforated sports flooring, sound-absorbing materials, weather-resistant coatings, drainage systems, LED scoreboards, retractable roofs, natural grass fields, irrigation systems, goalposts, soccer nets, basketball hoops, tennis court surfaces, volleyball courts, running tracks, jumping pits, long jump tracks, high jump mats, athletic equipment storage, sports lighting systems, stadium sound systems, spectator seating areas, concession stands, press boxes, umpire rooms, athletic training facilities, physical therapy spaces.