We are working on a tenant improvement and want to determine the embodied carbon on bookshelves, product display cases, and desks. Initially finding that Tally is not reading furniture, casework, or fixture families. Are there any tips and tricks you have found to be successful for modeling or defining FFE items in Revit and quantifying embodied carbon in Tally?
Thanks!
Mike
Mike,
There are work-arounds I know of for casework/millwork that can theoretically work on some furniture. As you point out, Tally does not natively read information about those families (my understanding is that it has to do with the Revit quantity takeoffs for these families not being able to map in any kind of clean, reliable way to 'real' material quantities).
For casework/millwork, you can go in and model the pieces as floors and walls, which Tally does read. This can be quite time intensive and make your Revit model unwieldy. Alternatively, if you can calculate the volume of the materials you're using in your millwork, you could make generic models that are the proper volume and a family type that Tally reads and it could then pull the data that way. In other words, if you calculate that your cabinets use 100 ft3 of plywood, you can make a 10'x10'x1' volume of plywood that is a floor element. Tally will be able to calculate LCA data from that floor element.
For furniture, you can follow the same path for pieces with materials that are already in the Tally database or rely on EPD data if it's available for the furniture you're specifying and post-process your Tally results by adding these impacts for furniture. The latter is of course more accurate, but EPDs aren't readily available for furniture.
For fixtures, there is very little information available at the moment that I'm aware of (but maybe someone else here knows otherwise). I know of an effort that is just getting under way in the lighting community to standardize around embodied carbon, but it is still in the very early stages.
Hope this helps - and looking forward to seeing what the rest of the brain trust has to say!
Jeremy