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Revit Creating Inconsistent Roofs with Identical Footprints

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jasonw72GVF
411 Aufrufe, 2 Antworten

Revit Creating Inconsistent Roofs with Identical Footprints

Strange issue here and I can't find anything in the forums about it.

 

I'm using Revit 2021, on windows. All updates. 

 

When creating a single ridge gable roof by footprint, Revit generates the top of the ridge in different places depending on the thickness of the roof type. Further, when looking at the roof in section across the gable axis, the vertices of the top and bottom faces of the roof do not align vertically. See attached image. This angular relationship between the vertices remains 1.64 degrees no matter the thickness of the roof. The top vertex moves further off center with change in thickness. 

 

One feature of the roof that might be driving the anomaly is that slope is defined by left sketch line (4:12) and by right sketch line (3.25:12). Both sketch lines are set to 0" elevation relative to the roof base.

 

Is this just a result of the way Revit measures true thickness of the roof structure layers from bottom up? Have I just gotten lucky the last 20 years and never had to model a roof with asymmetric pitches? I'd prefer to not model each side of the roof separately--but it's not as if it's the end of the world. 

 

The black line is a column grid representing the target for the ridge. The red line is the actual alignment between the vertices. 1.64 degrees off vertical. 

 

Screenshot 2020-12-10 171246.png

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ToanDN
als Antwort auf: jasonw72GVF

Because the roof planes have different slopes.  

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jasonw72GVF
als Antwort auf: ToanDN

So, a basic geometry fail on my part. Bummer.

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