Checking a model for interferences

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After completing this lesson, you'll be able to understand interference checking,

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and use interference checking for locating duplicate or overlapping elements.

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The objective domains covered are, 5.6d, check a model for interferences.

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Interference check tool enables effective clash detection between selected categories.

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The clash check would identify intersecting elements and can produce a report.

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Most will use this tool to prevent double counting of elements or to find modeling errors.

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The interference check in Revit is limited to hard clashing, but other tools such as Autodesk Navisworks can be used for more comprehensive clashing.

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In the example on the right, Revit would not find an interference between the pipe and plate,

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so it's normally not used for coordination between different disciplines.

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Go ahead and open up the model 037-Checking a model for interferences.

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Let's begin by opening the Interference Check dialog box.

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On the Collaborate ribbon, select "Interference Check" and then run Interference Check.

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Here we're going to perform a check on the current project, but it is possible to clash between two different projects.

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Let's begin by checking for duplicate elements.

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So here I'm going to clash structural columns with structural columns.

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We can then go ahead and select "OK", and you can see a clash is found.

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If we select one of these columns here and then select "Show", you can see that Revit then zooms up on the clashing items.

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And I can clearly see there's a double count of columns here.

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Let's then select "Close".

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And I can simply then go ahead and delete one of those columns.

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Ok, let's return back to Interference Check.

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And again, we will run the Interference Check.

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And this time I'm going to clash structural columns with structural framing.

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Again, let's select "OK", and you can now see there are more interferences found.

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We can then expand one of these sets and select the relevant element and click "Show".

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And you can see here, we have a clash between the concrete column and a framing element underneath here.

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As that's concrete, that will just simply need to be joined together.

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Let's now have a look at some other clashing items.

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So here we'll select this structural column and click "Show".

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And we can see here we have this round section again clashing with this beam here.

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On closer inspection, you can see it's a very small clash and really this will be resolved with a structural connection.

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Once again, let's look at the next clash here.

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Again, that would be a very similar thing.

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This one here is a genuine clash though, because you can now see that we have a beam running right away through the column.

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So, of course, there we could simply split the beam.

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So let's select "Modify", and on the Modify ribbon, we can use split element and we can simply split that beam.

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So to summarize, the interference tool is very useful to actually find modeling errors and also duplicate objects within Revit.