While I echo Mr. Redwine’s estimates a more basic answer is that with 4 or so hours, possibly less, a skilled technician can learn Tally well enough to generate a report. Understanding the report and actually reducing embodied carbon impacts is a whole different set of considerations and must be addressed with long term education, but if you’ve gotten this far I assume you are committed to education already.
My comments below assume a Core and Shell analysis.
There are a number of typical modeling practices that need to be addressed in the long run. Material consistency has been our biggest impediment to being able to simply run Tally, as the program is very literal about material designations.
For instance two W12x26 beams, one with a designation of Steel-ASTM A992, and the other with a designation of Metal-Steel-ASTM A992 will result in two Tally entries for W12x26. Fortunately Tally is also an excellent tool for ensuring modeling integrity, via the 3d interface with Revit, and the issue is easily resolved. This effort may take as long as 6 to 8 hours unless you have a complicated façade, in which case add 4 hours.
Overall, the process discloses a longer term effort at better modeling practices, at least in my experience.
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