Forums >> Revit Building >> Technical Support >> Multiple Voids in Family

blue442

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Joined: Tue, Aug 25, 2009
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Revit 2018 (but had the problem in 2017 as well...) So I've had this problem for a while now.  Can't put my thumb on it.  But these two different voids just wont cut the object I've got.  

TLDR version of my problem.  Making a concrete panel, have 2 different types of reveals.  A 2" large reveal, and a 3/4" deep Knock Out reveal.  If they over lap, they wont cut.  I can cut either one, just not both at the same time.  After alot of googling people with the same problem have concluded it is because they are both 3/4" deep one decides it wont cut.

If i change the depth of one by as little as 1/64", they both will cut.  

Hoping someone here has some insight. I'm stumped and would like a work around.  I have many overlapping reveals on this job that are giving me a problem.

Ive stripped down an example as far as I can take it.  It is attached.  The image is what the panel should look like.  I've had to cheat the reveals by 1/64" to make them work.

Attached Images

Attached Files 156565_Void_Error.rfa

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WWHub

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Joined: Tue, May 16, 2006
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Blue, I wish I had Revit here to test this....  If the depth is important, what if the bginning of the void is different?

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pijpiwo

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Joined: Fri, Sep 3, 2010
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Try void profiles by sketch. Both of them.

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blue442

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Joined: Tue, Aug 25, 2009
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WWhub & Pijpiwo,

I started to trouble shoot the problem first by making both by sketches (tracing the profile that was visible) the problem did not fix itself.

I changed the start/end points of the void sweeps.

It wasnt till i went back and modified the "face" side of my void making it deeper i noticed a small minor bust in the start point of one of my profiles.  I'm assuming that because it did not start exactly at the origin that it must have been causing a problem.

So as usual, user error.  It was just such a small minor problem that i could not see it.  Whomever created the profile did a bad job.

So now it's working, by profile, with the fixed profile.

Thanks.

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blue442

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Joined: Tue, Aug 25, 2009
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So what I've figured out - the angles between two faces will cause problems.  If they are that close and do not clean up exactly, it will cause breaks.  I've attached a graphic to explain it.  This was happing on a different reveal that has now been fixed.

I've had to modify one of my 3/4" X 3/4" reveals to be slightly longer in the vertical direction due to the angle of the reavel on the front face.

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