👉 A joistless structure is a type of construction that does not have any support beams or columns at the top, bottom, or sides. This means that the joists are vertical, with no horizontal supports. The term "joistless" refers to the absence of vertical supports in the design of a structure. For example, a house built without a roof would be considered a joistless structure. In this case, the roof is supported by vertical beams or columns on top and bottom,
