Forums >> Revit Building >> Technical Support >> New to Revit 2016, Another Fascia question :)

BubbaDubba

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Joined: Fri, Dec 11, 2015
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Hi all,

I have been using Autocad with a large amount of customization and pseudo BIM for the last 15 years.  I am finally making the jump to Revit and I'm trying to get my head wrapped around some concepts and assemblies.

First, I would like to say that I always draw and model things based upon real world methods.  In reality with a residential roof, the roof plywood extends past the the truss top chord or rafter and the roof fascia gets nailed underneath.

It seems as though Revit by default places the fascia outboard of the roof assembly.  I have tried modifying the family and changing the insert point to the right of the profile, but then fascias do not miter correctly at corners.

I have attached an image to show you what I would like to do.  Notice how the 2x6 fascia is lowered at eaves, but that would not be the case at gables.

Any ideas?  Thanks!

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Dasherry719

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Joined: Tue, May 6, 2014
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Hello,

There are several approaches and opinions to acheiving this. For Me, I dont bother modeling items at this level of detail.  I model facia, but the sheathing extenstion is not really critical.  Rather, I use a drafting view and accomplish this with 2d detail components.  However, if you want a model object that will funtion as a place holder, the approach is: 

• new generic "profile Family"
• draft the object according to your dimentions, sheathing thickness, and roof slope,
• load into project > create new facia type, use your new profile and position as desired with offsets.

If you are really wanting to model everthing.  Create your Roof type to include only a 3/4" structure + finish layers.

• proceed to insert how ever many different sized facia components you have, and host them to the edge of this shell roof, then use your offsets in the properties to place them relative to the sheathing edge.
• model your trusses to fit inside of this "shell" you have created. 

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BubbaDubba

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Thanks Dasherry719 for the information.

I have actually already modeled my roof similar to what you said.  I have two separate roofs. One for structure, and the other for sheathing and finish.

I am a big fan of reducing the amount of clicks for each process in creating CDs.  Most of the residential projects I work on are high end with very complex roof systems.  Do you know if there is a way I can parametrically change the fascia and trim based upon roof pitch?  Having a separate profile for each pitch seems like a lot of work.  I know that some projects I work on have a dozen different pitches, some of which are not a whole number (eg 3.25/12).

Considering the potential of my clients needing renderings for each project, I would like to have most major trim features modeled.  But, if the process for this requires a large amount of clicks and time, I might consider another avenue.  Thanks!

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