Abstract: Various disclosures of a horizontal stack joint system for a curtain wall is disclosed. In certain embodiments, the joint system comprises a lower subsystem having a dual member projection and an upper subsystem having a channel sized to receive the dual member projection.

Abstract: An architectural assembly comprising a plurality of panels and a plurality of hooking members. The hooking members are in locked engagement with longitudinal edges of the panels, and fixedly couple together these panels. The panels may be semi-circular in shape, and, when coupled together, collectively form a circular structure that may be used to surround a structural column. In another embodiment of the invention, a panel attachment assembly is provided, comprising a plurality of supporting members mounted to a fixed structure, at least one panel, and the hooking members. The hooking members are lockingly engaged with the panel and the supporting members, for fixedly securing the panel to the supporting members. The hooking members preferably comprise a U-shaped portion having a base portion and two projecting portions extending from opposite sides of the base portion. The hooking members also comprise head and tail portions extending from upper and lower surfaces, respectively, of the base portion.

Abstract: A suspended ceiling system has a plurality of main-tee beams and cross-tee beams assembled to form a grid system. Ceiling panels are installed within grid openings in the grid system. A retaining clip is used to secure the ceiling panels and the cross-tee beams to the main-tee beams. Panel clips can also be used to secure the ceiling panels to the cross-tee beams.