A system for eliminating gaps between a flexible sheet and an adjacent surface. A flexible sheet has a body, an upper edge, a lower edge, and a side edge. The flexible sheet is movable between retracted and deployed configurations. A knuckle member has first and second pivotable portions, the first portion is coupled to the lower edge of the flexible sheet and the second portion has a T-shaped first end coupled to a flap on the side edge of the flexible sheet. When the flexible sheet is retracted the second portion of the knuckle is angled with respect to the first portion. When the flexible sheet is deployed the second portion of the knuckle is coaxial with the first portion and the T-shaped first end moves the flap outward to engage the adjacent surface.

A wall panel assembly includes a first wall panel includes a first core having a first surface and a second surface opposite the first surface. A first edge joiner extends between the first surface and the second surface. The first edge joiner has a first male extension extending therefrom and a second edge joiner extending between the first surface and the second surface parallel to the first edge joiner. The second edge joiner has a first female receiver disposed therein. The first male extension has a first channel opening having a first width. The first female receiver has a first extension extending inward and having a second width less than the first width.

An occupiable building and a method for constructing an occupiable space in a structural frame building are disclosed. In an embodiment, an occupiable building includes a structural frame defining a footprint of the occupiable building, at least one lower deck structure located within the footprint of the structural frame and supported by the structural frame, at least one upper deck structure located within the footprint of the structural frame and supported by the structural frame, and an interior partition system installed between the lower deck structure and the upper deck structure to define an occupiable space, the occupiable space having a ceiling. The interior partition system includes first king post assemblies, a lower panel, and an upper panel. The lower panel is fastened to the king post assemblies and to the upper panel. The upper panel is fastened to the king post assemblies and to upper panel.

A barrier system for partitioning a space includes wall panels which interlock with each other to provide a modular wall that is fire rated. The interlocking panels are assembled in the barrier in columns using a first tongue and groove assembly and a panel lock using a strike and latch supported by the tongue member and groove member, respectively. The barrier system further includes cap panel which adjoin each at a joint to provide a modular ceiling that is fire rated. The cap panels are assembled in the barrier to corresponding wall panels using a second tongue and groove assembly and a panel lock using a strike and latch supported by the tongue member and groove member, respectively.