<p>This Architectural Drawing is plan of ducting layout for office building. This is 5 story office building. Duct means <strong>a bodily tube or vessel especially when carrying the secretion of a gland</strong>. 2a : a pipe, tube, or channel that conveys a substance. b : a pipe or tubular runway for carrying an electric power line, telephone cables, or other conductors. s the cooled or heated air enters a room, it forces the existing air out into another group of ducts. These ducts transfer this returned air to the return plenum. Then, the returned air is directed outside through a flue or filtered and sent back through the system. Ducts should always be located <strong>within the conditioned envelope of the building, ideally within the framing of floors, ceilings and walls</strong>, and they should be maintained so air does not leak out of or into them. For more information and knowledge download the drawing file. </p>