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.
Chichen Itza, world famous archaeological zone,is located 120 km from Merida via federal highway 180 in the State of Yucatan Mexico. The name Chichen Itza is derived from the Mayan language: Chi - mouth, Chen - well and Itza -the tribe that inhabited the area.