Complex Roof with Varying Slopes

[randy]

Hello,

I am using Revit 2022 and I am not able to design this roof, can anyone suggest me procedure to achieve this roof?

I've attached a shot of the CAD drawing and a shot of my attempt to recreate it in Revit...as you can see it's not going well.

Any kind of help will be great and appreciated, thank you in advance.

[Anonymous]

I would not trust the CAD drawing to be accurate.  Truss manufacturers and/or framers will often resolve roof issues on-site without consenting with the architect/builder of record.  

To recreate this roof in Revit, start by modeling separate roof elements for all the major pieces.  See attached for an example.  This footprint would be a good starting point.  Then you can model all the small gable roofs separately.  Also, you should probably expect to have gaps at your valley locations.  This is a result of roof planes not intersecting properly because of the location of valleys drawn on the CAD files.

[barthbradley]

Looks like your roof is built from multiple different plate heights.  Their might be a way to create it as a monolithic roof (not including crickets) using Offset From Roof Base at certain eaves. Also, I see a need for Slope Arrows in lieu of Define Slope at one or more rakes.  If you can post the CAD file showing Building Elevations, it would help us to help  you.  

[randy]

@Anonymous @barthbradley 

Thank you both for your responses.

I'm practicing with both methods but it surely feels like I'm drawing blindly.

I do not have an elevation of the roofs as I am told I will be able to generate them with the given plate heights and offset...I'm not new to roofs or Revit, but I am new to roofs in Revit.  I haven't found a tutorial that demonstrates a relatable workaround to the complexities of this specific project. I'm at a loss...not even sure if this is considered complex.

Are there resources I can look into to outsource something like this?

[randy]

@barthbradley @Anonymous 

Thank you both for your responses.

I'm practicing with both methods but it surely feels like I'm drawing blindly.

I do not have an elevation of the roofs as I am told I will be able to generate them with the given plate heights and offset...I'm not new to roofs or Revit, but I am new to roofs in Revit.  I haven't found a tutorial that demonstrates a relatable workaround to the complexities of this specific project. I'm at a loss...not even sure if this is considered complex.

Are there resources I can look into to outsource something like this?

[barthbradley]

---

@randy wrote:

@barthbradley @Anonymous 

I do not have an elevation of the roofs as I am told I will be able to generate them with the given plate heights and offset.

---

Let's see the plate heights then.  Hard to help you without knowing the condition.  Looking at the plan view, I'm thinking it's doable as a mono - at least a major portion of it.  But, I need more info to be sure.  Other than that, just do what was suggested previously -- create a bunch of roofs and join 'em together.  Clean-up will be a nightmare though.  

[randy]

@barthbradley @Anonymous 

The plane heights are on the PDF drawing with the respective offsets. The 14/12 section is actually a 10/12.

I've attempted to break it apart into chunks and also as one large foot print. I've been very close to the PDF from plan view but the elevation doesn't add up. When I adjust the elevation, the roof planes change and unjoin. I haven't used slope arrows before so I'm trying that now. 

See attached.

[barthbradley]

@randy : post the RVT along with the CAD.  I'll take a whack at it.  

[randy]

@barthbradley Can I email you? Or vice versa: alexandria@viauinc.com

[randy]

@barthbradley Can I email you? Or vice versa: alexandria@viauinc.com

[barthbradley]

@randy, just post it here as an Attachment to a reply post.  That way, anybody can participate.  The more the merrier.  

[randy]

@barthbradley Good point...I'm definitely open to suggestions.

I've attached the CAD files that show the plate heights and heel heights of the roof I'm having issues modeling. I've attached the Revit file with the traced roof planes and project walls and levels etc. This roof is 6" roof with 16" overhangs. 

The scenario is that the existing 10/12 roof is all at the same plate height and will remain, with certain areas being demoed to allow for the new complex roof to be added on. Only a few areas of the existing roof will be visible, so I'm not sure if it's best to model the existing roof and try to model the new roof separately and layer them, or to just model the entire complex roof at once without any reference to the existing.

I have modeled the existing roof which is placed on the main structure and copied it under the traced complex roof. Off in the distance you'll find my failed attempts at figuring this out.

Let me know what you guys think! I'll be here all day...

[gelobenitez]

Hi, were you able to model this? I'm doing a similar one and can't seem to wrapped my head around it.

[barthbradley]

Let's take a look at what you are trying to model.  Post some pictures and/or your RVT.