This Architectural Drawing is of AC layout plan of a apartment building. In a 10 feet high room, a split type AC should be installed at 7 -8 feet for the best cooling performance. For a window type AC, the best height is 3-4 feet from the floor. If you are fixing the AC very close to the wall or in an airtight room it will trip due to high head pressure, as heat dissipation can't happen. So, it's important to ensure that each air vent is oriented so that the middle section directs air toward the rest of the room. Otherwise, since ceiling vents are typically situated around a room's perimeter, the air would simply be directed toward the closest wall. A split AC's indoor unit can be fit on a beam without any issues. The gas/drain pipe provision if not provided in the beam can be taken from below the beam but would be visible. For more details and information download the drawing file.
