Abstract: Structural system and method are disclosed for building a simpler and more efficient double layer reticulated frame structure. The double layer reticulated frame structure includes an internal network that has a lower strut frequency than the external network. The lower strut frequency helps reduce the overall weight, cost, and construction time of the structure. Diagonal struts space apart and connect the internal and external networks. The diagonal struts are connected in an alternating manner such that no more than two diagonal struts are connected together at any point.

Abstract: Structural system and method are disclosed for constructing reticulated frame structures. Nodal joints having large diameter connectors are used to connect framing members to the structure nodes. The large diameter allows the connectors to directly support or bear the framing members. As such, compressive forces on the framing member may be transferred directly through the connector to the nodal joint through bearing action. A collar is threaded to the framing member at one end, and engages the connector at the other end. Cover panels may be disposed on the reticulated frame structure. Support members secure the cover panels to the framing members. Each support member is attached to a corresponding framing member and to the nodal joints in a manner to help resist bending loads and prevent axial rotation of the framing member.

Abstract: The invention is directed to a cover which is supported or suspended from a self-supporting, open air framework constructed over a vessel. The cover is sealed to the vessel.

Abstract: The invention is directed to a ceiling which is supported within a closure structure such as a dome. The edge of the ceiling is sealed to the closure structure by a non-permeable flexible fabric. Both the ceiling and the edge seal are airtight to prevent the passage of gases from a region below the ceiling within the closure structure to a region above the ceiling within the closure structure.