scalable classic column profiles

[bledmonds]

Hi,

I'm attempting to build column families for the 5 classical orders, all based off of the Diameter of the column (as formulas). The overall height/width of the column, caps, base, pedestal, and entablature are defined by a fraction of the Diameter. I've got all that successfully parametized. I'd like to be able to trace the rest of the profiles for the column, base, pedestal, and entablature and have them remain the same relative proportions when I change the Diameter. How do I do that without parametizing every little piece of the profile?

I'd appreciate any insight into how to proceed. Thanks!

[twiceroadsfool]

You dont. You parameterize the rest of the profile. Lines in a sketch can be scaled, but sketched items cannot. You also cannot specify a parameter for a "scale," or... You could, but then you would have to have parameters for the other items sizes to be based off of it.

*IF* everything scaled accordingly, it wouldnt take long to do. Sketch one, go in to it, apply constraints (they will inherit the current values), and add a multiplier for the *scale.*

In theory, anyway. :)

[davidcobi]

We also do a lot of classical columns. Scaling is a wishlist item (http://forums.augi.com/showthread.php?t=95101&highlight=scale+classical+columns). When I first tried to solve this I thought that maybe a planting family would scale, but it didn't seem to work.

[patricks]

There are some classical columns out there (RevitCity.com, etc) that have correct proportions, but they're based off of 3D CAD models. I typically just open the family, scale the 3D CAD block as needed, then save as a new family in the project folder I'm working in. You'll have to do separate families for every different column size/height you have, but it gets the job done.

[aggockel50321]

Here's one I did a few years ago, using the relationships given in Ware's book, "The American Vignola"

Not sure why the horizontal line appears on the revolve of the column (two abutting sketch lines), but they can be eliminated with the linework tool.

[davidcobi]

You can use the tangent arch tool to get rid of that extra line.

[aggockel50321]

Thanks Dave,

That did the trick.

[bledmonds]

Thanks all who responded to my first post. Thanks Andrewg for the example too. My approach was very similiar, except I based the formulas against the diameter instead of the height. However, I can drive the scale from the height as well.