It is not apples to apples, but if all you are trying to do is plan your
budget for hard drive purchases, then they are comparable. Depending on your
settings, either could be more or less. I did the same project in ADT and
Revit Building for my books. ADT weighed in around 9 mb. The Revit version
is around 8 mb. The two books cover similar topics, but not exactly the
same. The models do vary quite a bit actually. But this is the closest I
have to something done in both platforms. If you save the default 3 backups
for Revit, then it will need three times more hard drive. ADT only saves one
backup per file. Naturally with both, once you have made the "real" nightly
backup, you can delete old unneeded BAK (ADT) files or .001 (Revit) back
files. However, as you work you will need the HD space to accommodate them.
Hope that helps.
--
paul
Paul F. Aubin
Paul F. Aubin Consulting Services
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