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Thursday, July 26, 2012

Revit Electrical Panel Madness - #BIMBattlefield

An interesting set of events have taken place in the past week or so about Revit Electrical Panel schedules and their calculations.

July 17, 2012
For me, the affair started with engineers at the firm I work for claiming the math was wrong.  After some research and a deadline that had to be met my colleague, Doug, and I came up with a handout seen in the post.

July 24, 2012
A year old thread over at AUGI is revived with a video from an AUGI member named Martin Schmid.

The same day, Kyle Bernhardt publishes a very comprehensive post about all of the math that goes on behind the scenes of the Revit Electrical Panel Schedule.  Personally, I do not have the electrical know-how to understand every piece of post so Doug and I sent it off to our engineers to read over.  The response from our engineers was:

"If we take the separate load per phase the math is correct. In real world we do not have panels with single phase only. In any panel it will be 2 pole and three pole loads. We can’t separate the electrons per phase."

July 25, 2012
Kyle Bernhardt publishes another post proclaiming that something has been done about his in the latest Revit 2013 update.  Kyle states that "An update in Revit 2013 Update Release 1 makes this [computing per phase load demands] functionality possible..."...

I have not installed the update to Revit MEP 2013 yet to see exactly what it did (did it unlock the parameter or calculated values?) but it sounds like it might be a step in the right direction.  

July 26, 2012
Doug and I would like to think that maybe, just maybe, the handout we posted here had some sort of effect on this chain of events.  After all, we all need little victories fighting on the #BIMBattlefield.