Forums >> Revit Building >> Technical Support >> Underlay Bug/Glitch when Zooming in and Out

OwnageHawk

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Joined: Wed, Oct 10, 2012
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Hi Everyone,

I"m having a really frustrating issue with underlays in Revit.

When I'm in my Ground Floor Plan view and I set my underlay to the First Floor, only 50% of the underlay actually shows up.  Some walls, sinks, cabinets, and other items don't show up.  However, they do appear when I'm zooming in and out of the plan only for the duration of the zoom.  As soon as I stop zooming in or out, certain items disappear again.

What's going on?

Regards.

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

We don't have enough information to help you. An image of the underlay plan pointing out at least one of the objects that don't show, it's properties then an image of your floor plan with it's properties would help.

This could be a graphics card issue.  Turn off hardware acceleration.

Also - What Revit - what updates do you have installed?

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OwnageHawk

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Joined: Wed, Oct 10, 2012
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Thanks for the reply.  I did a test earlier today with the file and found that if I delete the Roof slab on the First Floor, the underlay works properly.  I'm not entirely sure what the roof slab has to do with underlaying the first floor on the ground floor plan, but apparently they are linked.  I'm now thinking it's a view range issue and the roof slab was causing some sort of weird clash.

Btw, I'm using Revit 2014 and everything is up to date.

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

We specifically ask what updates because users often say they are up to date .... and they are not.  Saying what updates would have been better.

The roof should not affect this. 

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OwnageHawk

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Joined: Wed, Oct 10, 2012
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Our current installation:

20131024_2115(x64)

Update Release 2

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

Thank you.

I can't recreate your problem.  I even used a plan region in the underlay view so my roof showed and that still didn't hide anything. It must be the components that are hiding for you. 

Attached Images

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