Monday, August 22, 2011

Ceiling Grid in Navisworks

Revit doesn't export the grid pattern of ceilings when you export to Navisworks. The grid pattern is really just a "hatch" pattern, fill pattern in Revit lingo. No joy if you want to see the grid in your export to .NWC. I responded to a post at last week with this approach to get a fairly realistic result in Navisworks.

I'm to inclined to distort the use of Sloped Glazing (roof tool).

The steps are as follows:

  • Create a mullion type that is the dimensions or even the actual profile for the tee.
  • Assign it to the Sloped Glazing roof type.
  • If you want the wall "L" create a different mullion type for that, assign it to the boundaries.
  • Assign the Empty Panel curtain panel type.
  • Pick wall to define the boundaries of the "ceiling grid".
  • Use a regular ceiling without a pattern set to the drop-in tile thickness and let them occupy the same space.

Get a little further carried away and use panels for the ceiling tiles. Put empty panels where non-hosted light fixtures should go in the "holes" for the lights. I used this approach a few years ago to render a room so I could experiment with getting better depth at the tile and tee edges etc.

Looks like the attached images:

Navis 3D view

Type Properties Dialog

Revit 3D View


Anonymous said...

why exactly would there be a need to model the grid?

Cost can be determined by SF. Conflicts would be detected using the OTB ceiling. Would anyone really pull quantities for mains, runners and tiles from the curtainwall?

We would never encourage anyone in our office to do so and if contractor needs it in Navisworks for any above reason, the contractor can do it in Navisworks.

That said, I have used the curtainwal tool for many things other than "curtainwalls" Rainscreen comes to mind as well as interior glass or even millwork feature walls. On millwork, it's easier than handling reveal tool and millworker can use to set panel schedule.

Steve said...

Sometimes I get obstinate when I write stuff and object to the "why" something is being done or asked for.

In this instance I didn't, chose to offer a solution instead.

One reason to use the technique so it shows up in Navis, and Revit for that matter, is when a grid is being used without panels like we see in numerous retail stores these days. The grid is the "design" element so it makes sense to provide one that doesn't look like a solid form.

Also if there is some concern about element interfering with part of the grid or specific grid members...then you can't do that without separate pieces.

Good to ask why before launching into some workarounds though.