chris price Archives » What Revit Wants

While many of us are struggling with a serious multiplication of models, Chris Price & Matthew Siebert have put together an interesting little case study on placing all design consultants in one model. Not just all using Revit – all in one single Revit model… Obviously, Revit Server (possibly plus VPN) or some sort of Remote Desktop scenario is required for geographically isolated teams, but there are definitely some pros to this method.

In my opinion, it would only work for models up to a certain size (a few hundred MB with all consultants isn’t going to be a huge building), after which I think it could become very difficult. Once you start segregating a model by sector or level, you aren’t in “one model” anymore. The other problem is that specialist subcontractors may not be using Revit at all (a post for another day). But the RTC Handout and Powerpoint is definitely worth a look. You will have to login to AUGI to download.

Chris Price has been pushing the limits. Check it out:
“What I found was Revit would crash at around 580 conditional statements in a single formula… Surely Autodesk should know someone would try and do this, lol!

So how to get around this limitation, my first thought was to try and use “And” and “OR” conditions to try and reduce the number of required conditions. However, this was going to be extremely tedious and there would still be 168+… So then I decided to simply split across a couple of parameters. EG: I had 500 conditions in one parameter then linked to a different parameter with the remaining conditions. SOLVED!

I did note a large performance hit when changing parameters in the family editor. Changing any values would take 5-15 seconds. However, testing in a project and the changes are instant! So not sure why performance is fine in a project.”

Tag: chris price

Collaborating in Revit on "One Model" (Case Study)

How big can an IF statement be in Revit?

Enjoy this blog? Please spread the word :)