Forums >> Revit Building >> Technical Support >> Orthogonal project to workplane defined by Reference Line

crwinchester

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Joined: Sat, Sep 4, 2010
173 Posts

I've encountered a snag where I'm trying to create a continuously sloping roof parapet using an in-place mass as a rig to host a roof by face. I have a reference line between two points defined by max and min height from the roof level that I want to use as the workplane to project the parapet outline to. However, when I choose the reference line as the workplane and pick lines of the outline, they copy at an offset from the original outline. In other words, Revit is choosing the lines at the slope and not projecting them orthogonally (which I think it should be). How can I get Revit to do this as I intended?

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crwinchester

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Joined: Sat, Sep 4, 2010
173 Posts

I guess the simplest way to ask my question is: How do you project lines orthogonally to a workplane?

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crwinchester

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Here's an image:

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crwinchester

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I believe I solved it. Instead of directly trying to draw lines on the workplane defined by a reference line (which does so in an unintended and inaccurate way in my opinion), I ended up: 1) drawing vertical reference lines from offset reference points along the desired profile. 2) Hosting another reference point on the resulting line 3) Hosting the newly created reference point by intersection of the sloping reference line. Doing this all the way around the profile gives the desired result. It's a much more manual operation, but the definition is a lot more clear.

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WWHub

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A reference line has to plane associated with it.   A multitude of planes can be drawn through a line.

Use a reference plane.

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crwinchester

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In this application a reference plane is of no use because of the directionality of the slope relative to the geometry (which will have updates). Correct me if I'm wrong, but if a static reference plane is used then the same issue "projecting" the outline to this plane would still occur ending up with the same problem from a different angle.

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