IES-VE User Forum

To be clear, for ducted return, you should model the ceiling cavity spaces in the model as voids, rather than as plenums, as you will not have any plenums. This assumes that there are in fact ceiling cavities (voids) in the real building---typically used to contain the ducts and other items ...

Liam's reply above does a very nice job of answering the main question here regarding the forms and making clear that the software is needed specifically for the performance-based analysis and to generate just the forms currently provided by the IES Title-24 module. The Prescriptive compliance forms ...