J&M integrates laser screeds on large site concrete pours to insure finish consistency and level accuracy. This video highlights the installation of a 12,000 square foot decorative concrete plaza at Riot Games' new corporate headquarters in Santa Monica. Laser screeds are self-propelled machines that includes a telescoping boom and wide placement head that disperses the concrete evenly, removes excess concrete to a prescribed elevation and vibrates the surface to a smooth finish. The screed includes an on-board computer system that determines the slab's correct elevation and pitch for surface drainage patterns. The screed's laser control system ensures the precise level finish via electro-hydraulic machinery.