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.
Along with the River Test the River Itchen is the very best of the English chalkstream rivers. G.E.M.Skues â the father of Trout nymph fly fishing techniques-fished the River Itchen in the late 19th and early 20th Centuries.ituated very close to the River Itchen are some of the United Kingdomâs most important historic sites such as Stonehenge, Winchester, Salisbury (inc. Old Sarum), Portsmouth (inc. HMS Victory), Southampton and the New Forest.