Resolved clashes not resolved

[brenehan]

Hi Guys

With the Revit Issue and the ID Element numbers; I've just discovered the following. Can someone just confirm it; I want to ensure I'm not going mad. (I've tested this on Navisworks Manage 2012 and 2013 – all service packs included).

It looks like the Clash Detective is working off the "Last Object" resolution. The Typical Revit ID number is working off the "First Object" Resolution.
However when an object changes in Revit (Change the type of a piece of furniture, or change the wall thickness and thus a door frame thickens) the "Last Object" Element ID changes number.

Thus if you had previously run a clash and found a clash between e.g. a door and a beam (a clash was found),
And then the following week, the wall hosting the door changes size (thus the frame changes) on export to NWC the "Last Object" Element ID has changed.

[pauljordan]

Brian, it's MUCH easier than that.

Just save an .nwd file and go back and revisit it every day for a week. Your results will change even if the drawings haven't even been touched.. They'll change from new to active, to resolved, etc..

I tested this in a VERY sterile environment where I knew the models weren't changing but, the clash results had a mind of thier own..

Ohh, and while we're at it, have you ever taken a look at your Rules?? Those things will continually rewrite themselves, uncheck your rules, and check themselves, no matter how many times you save them.

There's Gremlins in Revit, that's all I can figure..

[brenehan]

Hi Paul. Have you brought up the Revit element ID with Autodesk? It's a big issue.
We have a tool iConstruct which we can use to restructure the file and use the first object ID also as the last object ID. That will resolve the issue, but we shouldn't have to do that. We had a similar issue with BIM 360.

[S_P_A_]

When I tested this it was between a revit element and a subcontractor AutoCAD MEP object. The AutoCAD MEP object is what showed both resolved and new at the same time not the Revit element. This thread seems to take on the Revit to Revit conflict not what I was seeing. Still seems to be an issue and haveing no resolution. All Service Packs have been installed.

[brenehan]

I got conformation from Autodesk the revit ID number is a known issue and will be resolved in oneof the new releases.

However if any one is doing a lot of clash detection out there I would suggest getting iConstruct.
Between rEconstruct and clash manager it is a big timesaver.