Demolished Ceiling Tile - Proper Phase Visualisation

[samuelab182982]

Hi,

I am attempting to display a demolished ceiling tile in Revit where the patter changes. Revit only changes the outline to dashed lines, but I want the inside pattern to be dashed as well and this is proving very difficult. Here is what I am looking for:

Existing phase: Solid line
Demolished phase: Dashed lines
New Phase: Nothing, the ceiling is gone

This issue has been tackled numerous times before (http://aectechtalk.wordpress.com/2010/08/16/display-of-demolished-ceilings-in-revit/), without a satisfactory answer. Most solutions are to create two ceiling, on that looks normal and one demolished. This is not appropriate for scheduling or preventing confusion.

Does anyone have a good long term solution to make Revit show the tiles as we desire?

[greg.mcdowell]

For the dashed pattern you'll need a new Surface Pattern defined by a new PAT file (lots of stuff online about how to create this).

As to showing part of a ceiling demolished and part existing, you will need 2 ceilings to accomplish this. You can't partially demolish anything... it's an all or nothing approach.

[patricks]

There you go, 2x2 and 2x4 demolished ceiling grid patterns.

The problem with this, though, is that if you show that ceiling in any previous phase (before New Construction with demolished items visible) then it will have the same dashed line pattern there, too.

We rarely show existing to be demolished items, before they're actually demolished, so it's not a problem for us.

[samuelab182982]

Greg and Patrick: Having two ceiling is not at all a best practice and defeats the purpose, I do not consider this a good long term solution.

I`ve already achieved the dashed look, but as you mention it does not show a normal ceiling during the EXISTING phasing if we wish to show all phases (Existing > Demo > New).

Since the dashed lines of the demolished ceiling are usually tight against walls, they do not show up and the inside pattern is seemingly impossible to be shown accurately. It seems like this is one of the areas that Revit has not been able to properly solve yet, unless there is very obscure solution out there, beyond the reaches of Google and AUGI.

[patricks]

Unfortunately what has been said here are really the only options.

Having 2 separate pieces of ceiling when you're demolishing part and keeping part is normal practice. The same thing has to be done for demolishing part of a slab, a roof, a wall, etc. In Revit the phasing tools are per-element only. You can't demolish part of an element without demolishing the whole thing. Therefore there is the need for 2 separate elements.

[squidly]

What i do in this situation is use line work to make the ceiling demolition extents more clear. i will often draw an "X" corner to corner of the area to be demolished and note it as such. Otherwise Revit isn't very clear, graphically, as to the areas to be demolished due to the shared edges with things not being demolished.