Forums >> Revit Building >> Technical Support >> Dangers of ceiling grid patterns between normal and reflected plans

SwiftImage

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Joined: Sun, May 30, 2010
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Let’s say you have a project that you are added a grid ceiling into.  You place your ceiling and the default grid layout isn't correct.  Time to change the layout (centerline of columns, line up with a corner, whatever).  From the architectural perspective we would typical do this on a reflected ceiling plan.

Problem: 

Changing the grid layout in the reflected ceiling plan will only change the pattern on the bottom face of the ceiling (think of the ceiling as 3D geometry, a square ceiling would have a top, bottom, and 4 sides).  The pattern on the top side will not change.  Normally this wouldn't be an issue as the reflected plans will always be correct.  Skip ahead to the mechanical consultant getting the model.  Both mechanical consultants I have worked with on Revit projects have done things the same way.  They set up their ventilation plans as a normal floor plan with the cut plan raised above the ceiling (i.e. cutting and looking down at the ceiling).  When they start laying diffusers out, they are more than likely using the incorrect grid layout.

Possible Solutions:

1. Make the consultant use a reflected ceiling plan rather than a normal plan.  This seems like the simplest and most obvious method.  However, I do not know enough about the mechanical or electrical side of things with how they prefer/need to set things up to know whether it is a viable option.  Talking with our mechanical consultant, they prefer not to use the reflected plans as it makes anything that crosses each other be the reverse of how they want it seen.  I don't know if this is an office standard of their or industry standard.
2. Use a 3D view and manually lock the grids from the top to the bottom.  This is very time consuming and seems like a waste of time and productivity.

Questions:

1. How does your office handle this?
2. Why?

~SwiftImage

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~SwiftImage

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Pavan

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Joined: Sat, Mar 19, 2005
157 Posts

In Mechanical floor plan 'View Properties', change the 'Underlay Orientation' to 'Reflected Ceiling Plan' and slect the related Level for 'Underlay'. No need to raise the cut plane.

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Pavan Reddy

Revit Manager

Intelligence is not always knowing the answers, it's always asking the questions.

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SwiftImage

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Joined: Sun, May 30, 2010
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Both myself and my mech consultant are looking at this.  When he sets underlay orientation to reflected ceiling plan the entire architectural model vanishes.  Doesnt matter whether we set the underlay to the related level, or to anything for that matter.  What could I be missing?

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~SwiftImage

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