Wednesday, 28 December 2011

Fun with Vasari Windtunnel

When I found out about the windtunnel feature in Vasari I wanted to put a car in a see how it does. I had wanted to put a formula 1 car in but couldn't find a detailed 3D model for free. So I used a BMW X5 since it was free. It's quiet fun to play with. Look at all the things you can tweak and the imagery it produces!

In another scene I had taken buildings from google earth and added my own to see the effect of the wind on the surroundings. 

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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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Friday, 2 December 2011

view troubles

Recently I ran into an oddity. We had some trouble with filled regions. The same family would work just fine in a clean new project but would show up in another. Normally I start to go down this list when things are not showing up:

1. Is the view "Discipline" set correctly?  For example if your view is accidentally or purposelly set to Structural the wall may not be showing because its non-bearing...
2. Is the view range set correctly to see the particular element?  I'll often switch to my 3D view and orientate it to match the view, if I can't see it in the 3D view its most likely a view range issue.
3. Is the element in the correct phase and is an appropriate phase filter set in the view to make it visible.  Maybe someone set it in a future phase?
4. Can you see the element by enabling "Reveal Hidden Elements"?  If so, select it and select unhide element or unhide category.  Try not to use the Override element or hide in view options...
5. Is the element in a workset that isn't open or turned on in the view?
6. Is there a filter applied to the view that is causing the element to be hidden?
7. Has someone used the linework tool on the element?
8. If its a family, is the detail level of the view set correctly?  Sometimes families are set not to show at Coarse.
9. If its a family, has someone selected the geometry of the element not to show in plan, section/elevation as the case maybe?
10. Maybe the view has been created as a detail view?  By default certain categories aren't visible in a detail view...  As such change to a standard section.
11. Is the element part of a design option and perhaps that isn't the current option for that particular view?
12. Is there a plan region in the view that is adjust the view range settings incorrectly for the area in question?
13. If its a datum, is the 3d extents of the datum intersecting the view?
14. If its a section/elevation marker, check the "hide at scales coarser than" parameter to ensure its set appropriately to show.
15. Is it part of a linked revit or dwg file?  Ensure that the link is loaded...

( this list comes from)

I think we can add another
16. if the object has warnings try to clear them first and maybe even recreate the object that is not behaving as it should
17. If it's a part you are looking for check if the view properties are set to show parts or both

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