Abstract: A light-weight structural system is provided by a panel system having at least one pair of adjacent panels (10) and a clip (60) positioned between the adjacent panels. A groove or channel (26) in each panel receives an outwardly-extending tongue or tab (70) on the clip. Built-up gussets (28, 30) on the panels above and below the groove or channel provide structural strength. Upwardly-extending support members (64, 66) on the clip bear weight from the panels. A base section (62) of the clip allows the clip to be fixed to a roof or wall substructure. The panels can be formed from thermosetting or thermoplastic polymers, especially fiber-reinforced polymers.

Abstract: A well car for carrying shipping containers has a pair of end structures supported by rail car trucks, a pair of first and second spaced apart side beams extending between the end structures and a well defined therebetween. A container support cross member is mounted between the side sills in a position to support an end of a shipping container load carried within the well. The container support cross member may be a monolithic beam member with a attachment fitting formed at an end thereof. The attachment fitting is connectable to a side sill at a moment connection. The remaining end of the cross member is similarly configured and connected to the second side sill. Each end of the cross member has load bearing surface portions which may be used for supporting a corner of a shipping container. The moment connections permit a bending moment to be carried by the cross member between the first and second side sills.