I am using Equest 3.61. There is an option to define a space as multi-storey. For example, I have a high atrium in the project I am modelling. Is this an appropriate approach to modelling atria? > Chris Jones Enersave Logistics Suite 1801, 1 Yonge Street Toronto, ON M5E 1W7 Tel. 416 203-7465 Fax. 416 946-1005