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Forums >> Revit Building >> Technical Support >> Quickest/Simplest way to make historical cornice
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Modeling a turn-of-the-century building in Revit for a rehab project. Need to have all exterior elements in the model/elevations for the historic review board. Any ideas/suggestions on how to create this?
Thanks guys
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Autodesk University Learn. Point Cloud on a shoestring. Microsoft Photosynth. Or you can model each corbel and panel as a separate objects, and then repeat them.
Edited on: Tue, Oct 4, 2011 at 12:44:03 PM
Edited on: Tue, Oct 4, 2011 at 12:47:31 PM
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Laser scanning could help. There are several threads on Revit City about 3D laser scanning with more information.
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laser scanning WOULD help 
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It can be done with photos only, no laser scanning necessary. You can take the photo's yourself. Create a point cloud using one of several different programs. Autodesk Photofly, or Microsoft photosynth or Bundler, check out the video I listed before. You upload pictures, and the online software creates a point cloud from your pictures, which you can then import to Acad, and I think now Revit.
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Yeah, laser scanning is out of the picture. I'm doing this project freelance, so don't have access or the budget for a laser scanner. Will have to try the point cloud from photograph option. I'm assuming I would have to make a mass from the point cloud, and then apply a wall to the faces. Or, can you make a model-in-place from the point cloud?
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there are some add-ins that will assist in modeling. imaginit has one i have used before but i can't think of the name off the top of my head.
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Autodesk's "Project Photofly" has gotten FAR ahead of Microsoft Photosynth.
By default, Project Photofly now creates 3D meshes which can be imported into revit, (albeit through a couple steps) opposed to photosynth which still only creates point clouds.
Manually stitching in Photofly is a huge advantage too.
...Personally, I would model that cornice as a curtain panel. I see: One radial array of blends. One horizontal sweep with multiple profiles. One flat plane, which I would probably model as a sweep. Another blend for the column, where the panels should begin repeating... a single vertical extrusion for the bricks at the top...
I count 10 or 11 various geometries needed to make that so it'll tile nicely. That's not so bad!
Edited on: Tue, Oct 4, 2011 at 8:43:29 PM
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Okay, I got an itch to model this over lunch.
This is really rough and faked in. But its' a start, and a proof of concept. Took about half an hour. If you're using 2012, help yourself to the panel family.
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itsmyalterego: that is awesome! could you point me to any tutorials (or share how you did that)? thanks for the help
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Here's a pretty decent-looking tutorial I just googled.
http://www.dccadd.com/papers/Tutorial%20-%20Creating%20Parametric%20Families%20in%20Revit%20Arch%202011.pdf
You don't have to invest in making this parametric, IE stretchy. Just try to figure out some of the basic dimensions for the cornice and, build it exactly the first time. Parameters are one of the steeper learning curves in revit.
Basically, start a new family with the "curtain panel" template. Make sure the widths (left/right refplanes) and height are correct before starting... I messed this up a little. (ultimately you'll have your curtain wall grid lines at this same spacing) Next, it's just a matter of making sweeps and extrusions and blends. Copying and pasting them around. The "fan" is made up of blends. A radial array went insane, so I just copied and rotated them. They're buried in the slanted sweep--and exposed with a void extrusion that cuts the sweep only.
One confusing bit was making a new reference plane for the slanted face, on which the fan and the void is hosted. You can orient a 3d view to a face or plane, to make work easier though.
Attached is a sloppily annotated picture. At home I don't have anything better than MS paint.
Hope that helps. I find that family-building really opens up a lot of potential in revit. The included tools and families cover 95% of everything you need to do, but then with the modeling tools you can make anything you dream of.
Edit: The fan is made with swept blends, not blends.
Edited on: Tue, Oct 4, 2011 at 9:09:39 PM
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