The document describes Skyrail, a formwork system for poured concrete ribbed slabs. Some key advantages of Skyrail include safety, savings from reduced material costs, structural efficiency through lighter slabs, easy dismantling without chemicals, reusability, and flexibility for installing wiring and ductwork within the hollow ribs. The system uses plastic formwork components that are self-supporting, lightweight, compactly storable, and reusable for multiple pours.