Forums >> Revit Building >> Technical Support >> "Dutch Gable" roof

sciolist

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Joined: Fri, Oct 19, 2007
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Probably a relatively stupid question....

How does one go about forming a hip roof with a gable vent at the end of the ridge with the standard editing tools? This is the roof form often referred to as a "Dutch Gable" in the western U.S. Not the European version, but a hip roof with a vertical facet inboard of the plate.

The only way I've found to do this is by superimposing a gable and hip roof, which causes unwanted complexities.

It seems as though modeling this shape as a single roof form is not possible, because it's not defined by a closed loop of lines in plan.

Any help would be sincerely appreciated.

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nortoncad

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Joined: Sun, Jan 13, 2008
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Hi,

You can form two closed loops in plan, one for the roof outline, and one for the subtraction of the dutch gable, making sure that the subtraction has no slope definition; then form a roof for the dutch gable. Then create walles at either end & attach to the 2nd roof. The complexities are minor & only occur at the roof junction, which is a normal construction joint, and will blend together when rendering.

Hopefully this answers your question.

-----------------------------------

Regards,

Mark Norton

Architectural Design Manager/Application Specialist for Revit & AutoCAD/Effective Project Crisis Managment/3D CAD modeling

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sciolist

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Joined: Fri, Oct 19, 2007
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Thanks, Mark.

I did not realize voids could be made that way in the primary roof.

As far as creating the secondary roofs, what worked well for me was to build only a narrow strip of roof to define the rake, and then use the Join Roof tool to join it to the primary roof.

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jfmonod

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Joined: Mon, Apr 23, 2007
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 I have had success with using the "cutoff level" field in the roof properties. This will terminate your first roof at a given height. You can then draw the second roof with the gable ends and set it at that cutoff height. Of course this is also the way to create mansard roofs ... etc.

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