Hi all,
I am wondering what are your methodologies pulling multiple Revit models elements and combined them in one Tally analysis model? For example, if I were a architect and I get structural model in Revit. How do I create a Tally model for carbon calculation which include both architectural and structural elements?
Currently I am copying over the other model elements from the external model. Wondering if there are more efficient workflow. Thanks for any suggestions!
Hi Eunice - you can actually apply tally definitions within both models (assuming that you are allowed to modify both). If our structural engineer isn’t running a tally model of their elements, we’ll usually break off a new central model of the structural model and save it locally to serve as the LCA study. Then we’ll input material information inside that model and link it to our architectural tally model. While you can’t update information in the linked models (information is read only), you can get take offs of material in those models if they are defined. Just make sure you have a clear understanding of what material is being tracked in what model. Last thing you want to do is double count structural material that shows up in both the architectural and structural models (floor slabs are a common one)!
First link the external Revit models (like structural models) into your main architectural Revit model. Instead of copying elements, use Tally’s feature to map elements from linked models. In Tally, go to “Manage” and “Links,” then map the elements from the linked Revit models to your main model. This way, Tally can analyze all elements together, including both architectural and structural parts, for accurate carbon calculations. This method is more efficient than copying elements.
Thank you! I I will give it a try.
Hi. How do you model the layer of Gravel on the rooftop? Thank you!
I haven’t had to model gravel on the rooftops for any buildings that I’ve worked on, so this is just a rough idea - I’d determine the average thickness of the gravel layer, and add that either to the roof assembly or add it as an accessory material. Then I’d find some material that seems like a good proxy - I no longer have access to Tally, so I can’t give you a good idea, but there may be an aggregate option buried in there. apply that to the volume of gravel, and you’ll have a rough estimate. All in all, the gravel layer is likely minimal compared to the rest of the building.
Hi Justin,
I asked this question from the Building Transparency and they answer was:
Model it as concrete and input all the values as none excpt the gravel. It does serve the pourpose.
Best,
MZ
Oh that’s clever and that seems like it would work. So a custom mix?
Yes. That should solve the issue.