Wednesday, 21 December 2011

Revit Warnings

Recently I got a file from an constructor asking me to evaluate it. He was told by the architect that he could use it right away to do some cost calculations on it.

I was asked what do you think of the file? Can you take a look at it. I told him sure no problem. I opened the 70 mb file and started looking around what it was. So I thought let's take a look at the warnings in the model. So within a few clicks I found out that the model had more than 3000 warnings... Most of them were duplicate walls, doors and problems with rooms. I had to come to the conclusion that this model was not usable for any kind of cost estimation. 

The contractor was definitively not happy with the architect! 

I was intrigued by the model. How on earth could you create so many errors in one model? The modeler had used groups for keeping the layout of the walls and doors the same between the levels. That seems like a sensible thing to do. Luckily Autodesk software always had had a problem showing multiple face in the same place. You get an odd mix of the two. I hope they will never fix that because it's a very handy visual clue. The building had about 10 floors with the same wall layout group. At some point it must have gone wrong copying these groups between the levels because I found 18 of these groups, many of them with a strange offset. 

I turned the group into a separate file and I took another look at the warnings. Only 2 remained. 

Many of the warnings were due to not paying attentions and could have been avoided. The architect looked like an idiot while the model wasn't that bad. If he would have bothered to check those warnings and fix them!

So my advise to all of you Reviteers:
  1. Check your model for warnings!!! 
  2. Fix those warnings or document why they are there!
This is what you should see when modelling in Revit:

A nice greyout warnings button

And last; yes I have been guilty of ignoring warnings as well...

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