Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I would recommend going to the input/output reference and look at the description of each input field. If you are referring to the object InternalMass it is normally used to describe objects inside a Zone and not the thermal mass in the constructions. You can imagine it being used to account for the internal mass of furniture or other objects inside the zone. I don't know what you mean exactly by "an urban scale", but there is some good information on other answers provided by the developers on why or why not to include multiple buildings in a single simulation.
