Patent ID: 8307605

Claim:
A method of forming a dome shaped structural system, comprising the steps of a) providing a compression ring, having a plurality of rib mounting flanges, each having one or more openings configured to receive a fastener; b) providing a lower ring with a larger but similar shape to the compression ring, the lower ring having connecting portions having openings, each of which is configured to receive a fastener; c) providing a plurality of metal ribs configured to extend between the lower ring and the compression ring, each metal rib comprising a rolled steel tubular member having an upper end, a lower end, a predetermined curvature between the upper and lower ends, and metal plates extending partially out of the upper and lower ends, respectively, each of the metal plates one or more openings, each configured to receive a fastener; d) positioning the compression ring in relation to the lower ring such that the compression ring is above the lower ring and in centered relation to the lower ring, and e) connecting the lower ends of the metal ribs with the lower ring and the upper ends of the metal ribs with the compression ring, by aligning openings in the steel plates with openings in the flanges of the compression ring and with the connecting portions of the lower ring, and inserting fasteners through the aligned openings, to form a dome shaped structural system; wherein the compression ring includes the rib mounting flanges at predetermined locations on the compression ring, and the metal plate at the upper end of each rib extends into and is fixed to a slot in the rib and wherein the lower ring has angle members that form the connecting portions of the lower ring, and the step of connecting the rolled steel tubular ribs with the lower ring comprises aligning and coupling the plates at the lower ends of the rolled steel tubular ribs with respective connecting portions of the angle members of the lower ring.