Showing elements from a ceiling plan in a floor plan

From time to time it’s nice to see overhead items in a Revit floor plan. Dropped ceilings, soffits, light fixtures, etc. are all useful to see in plan view, especially when arranging furniture and such.

Here’s a great and incredibly simple technique to show these items in plan using whatever line style you choose, while still maintaining the connection to the actual ceiling elements. I’ve found some designers simply using drafting lines to create these items in plan, but this is a non-BIM way of doing things, since there is no real connection between the items in plan and the elements in the RCP. Sure, you could constrain and lock them, but the following method is much simpler.

What’s the trick? Well, it makes use of Underlay, setting the orientation to Reflected Ceiling Plan, then using the Linework tool. The slick thing is that once you’ve overridden the line style, you can shut off the underlay and the lines you’ve modified are still visible. Nice, right?

I’m sure that’s enough to get a lot of you going, but here are the step by step details in a quick Revit tutorial.

Revit Tutorial – Show Elements from a Ceiling Plan in a Floor Plan View

Revit - Standard Reflected Ceiling Plan View

Here is a standard Revit reflected ceiling plan. We’ve got an acoustic tile ceiling with an overhead lighting fixture in the conference room.

Revit - Standard Floor Plan

As you know, by default in a Revit floor plan view, no ceiling items are shown.

Revit - Turn on Underlay with RCP Orientation

Set Underlay to Level 1 (same level) and make sure the Underlay Orientation is set to Reflected Ceiling Plan

Revit - Linework Tool

Use the Line Work tool from the Modify panel of the Ribbon to change the appearance of the edge of elements you’d like to be visible in the floor plan. You’ll notice that there is an Overhead style that exists for this very purpose.

Revit - Overhead Line Style

Piece of cake, right? Simple choose ‘Overhead’ from the Line Style drop down (or whatever line style you prefer) then click the edge of the element you want to be visible. You’ll see the line change from halftone (underlay style) to a dark line with whatever line style you choose.

Revit - Ceiling Elements in Floor Plan

Here’s the finishing touch! Turn off Underlay in the View Properties. Presto! The lines that we modified with the Line Work tool are still visible. Sweet, right?

Underlay Orientation and RCPs with Revit (especially Revit MEP)

Mowing the Revit RCP Lawn

I want to give a shout out to Jeremy Smith from the invaluable Autodesk Revit Clinic blog for a great post on an issue that many users, myself included, have found to be very frustrating. As Jeremy highlights, the answer is actually really easy, but often overlooked. I won’t parrot his post here but to sum it up quickly, here are 2 important take aways:

1. If you have trouble getting a ceiling to appear in an RCP view, even after checking all the usual suspects (ceiling category is on, view range is correct, used the right view template, etc.) check the Underlay Orientation and make sure it is set to Reflected Ceiling Plan.

2. The most important take away is this: While part of the View Properties, for some reason, Underlay Orientation is not controlled by View Templates. This is counterintuitive and is the reason why this issue causes so much frustration. I think we get in the habit of using View Templates to control all aspects of a view, and we expect that when we apply a ‘Ceiling’ template, we expect that it would obviously set the Underlay Orientation to RCP. It doesn’t. Set it to RCP yourself and you’ll be mowing the grass in no time.

P.S. – If you’re baffled by my mowing the grass comment, or just want more details on the Underlay Orientation and RCP issue, just check out Jeremy’s great post at http://revitclinic.typepad.com/my_weblog/2010/08/where-is-the-ceiling-check-the-underlay-orientation.html