If the equipment is going to be based off of the same ceiling level, then you should use the same Reference Plane (or Level) to host them both. As I mentioned previously, Ducts must be associated with a Level, not a Reference Plane.
River Itchen. The River Itchen is a beautiful chalk stream which flows for approximately 28 miles from mid-Hampshire to Southampton.he source of the Itchen is situated in Cheriton, near Alresford, and flows down to the historic city of Winchester passing through nature reserve Winnall Moors, and Winchester City Mill.
The Indus River has its origin near Mansarovar Lake that is situated on the Tibetan plateau. The Ganga River originates at the confluence of the Bhagirathi near the Gangot â¦ ri Glacier. In what mountains does the Indus River originate?