Concrete Plywood Dust Barrier Zipper Door Construction

Raw concrete walls frame a heavy-duty dust barrier zipper door, its translucent plastic strips hanging slightly loose against a backdrop of unfinished plywood sheathing. The site logic is evident in the exposed structural beams and temporary metal supports holding the partition in place. Late morning light from the midnight sun casts long, soft shadows across the wet floor, where a fine drizzle has left a sheen on the rough concrete. The zipper strips catch the dry mountain light, revealing their texture and the grit of the construction environment. One metal bracket secures the bottom of the door to the concrete slab, showing the functional, forward-moving nature of the active deck.