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How to model a sail shaped conceptual mass?

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    How to model a sail shaped conceptual mass?

    Hi, I teach Revit at a HS and a student's final concept has me boggled. I cant seem to assist him in creating the initial form.
    The student wants to create a sail shaped building, with mass' similar in shape to a triangle, but they have curved sides.
    If doing a conceptual mass, you can sort of trick this by making a triangular bottom shape, and a TINY circular top, but then you can not control the shape of the "guide rails" - see my sketch.
    I can sketch this using 3D points and splines, but then the problem is that I can only create a 3D mesh, and can not cut floors out of the building (30m or 90ft tall). I would want floors every 5 metres going up. How do I make this as a conceptual mass so that I can create mass floors, split face (define top 5 metres as roof and lower 25 metres as curtain wall etc)?

    Many thanks!
    Attached Files

    #2
    Interesting, never did much with conceptual masses but I got this far:

    Family1.jpg

    Sides are split up into 4 triangles, so might need some tweeks
    Attached Files
    Company Website: www.deurloobm.nl
    Revit Ideas: Is this family Mirrored? | Approve warnings | Family Type parameter just those in the family

    Comment


      #3
      If the final purpose is to make a mass that can be used for mass floors and curtain systems, you need to start with the mass template.

      Make some generic model families first, with flat triangular shapes with curved sides, set to be work-planed based, not always vertical. In the illustration below, the yellow tags indicate 3 of those families, placed horizontally on named reference planes; use those to create the main pyramid form. The green tags indicate other 3 of those families, placed on vertical named reference planes. Use those to create the small or secondary pyramid form. Then join the two forms. To control the shape of the curves of the pyramid, or "guide rails" as you say, either change the shape of the families and reload, and/or move the named reference planes, until you get the desired shape.

      Then, load this into a project, and create mass floors and curtain systems.

      I hope it helps.
      Attached Files
      Last edited by Alfredo Medina; September 24, 2017, 01:11 AM.
      Freelance BIM Provider at Autodesk Services Marketplace | Linkedin

      Comment


        #4
        Originally posted by Alfredo Medina View Post
        If the final purpose is to make a mass that can be used for mass floors and curtain systems, you need to start with the mass template.

        Make some generic model families first, with flat triangular shapes with curved sides, set to be work-planed based, not always vertical. In the illustration below, the yellow tags indicate 3 of those families, placed horizontally on named reference planes; use those to create the main pyramid form. The green tags indicate other 3 of those families, placed on vertical named reference planes. Use those to create the small or secondary pyramid form. Then join the two forms. To control the shape of the curves of the pyramid, or "guide rails" as you say, either change the shape of the families and reload, and/or move the named reference planes, until you get the desired shape.

        Then, load this into a project, and create mass floors and curtain systems.

        I hope it helps.
        Hi Alfredo,
        What you have made is exactly what I want to do. Could you share the files so I can see how you made them?

        I have made two triangular shapes with curved sides as a Metric Generic Model Family - with plane based selected as you mentioned. It wants to extrude it 250mm, which I assume makes this the floor thickness?
        Now, I next made a conceptual mass, and created three reference planes at different heights. I am stuck now how to load in the two triangular families into the conceptual mass?
        Once I load them (and figure out how to do that), I assume I click on the two shapes and click Make Form. The conceptual mass template does not want to load in the families.

        Finally, what shape do you make the point at the top?
        THank you,
        Zach
        Attached Files

        Comment


          #5
          @naglemrcope

          • I don't have the files, sorry. I usually don't save these exercises, just the illustration that explains the process.
          • Notice, in my previous message, I wrote the word flat to refer to the generic model families. In your message, you said that you made extrusions, instead, of 250 mm. That won't work. The families need to be flat because they serve the role of profiles to make forms.
          • To load the flat families, use the Load into Project button from the generic model families into the mass family. Then assign a workplane, then place the family.
          • The shape at the tip of the pyramids is a triangle, too. The radius of the circumscribed circle is 1 millimeter.
          Last edited by Alfredo Medina; September 27, 2017, 02:49 PM.
          Freelance BIM Provider at Autodesk Services Marketplace | Linkedin

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