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    double spiral ramp

    I was ask to check if double spiral ramp we are working on now in our office is correct. So I decided to model this in revit. First I was trying to use ramp tool but found it useless. Maximum slope was
    1/ 6,666666666666667 = 15%. The external edge of the ramp was in fact no more than 15% but internal was even more than 22% so it was totally incorrect.
    Then I started to think how to manage the problem and figure it out that maybe slab will be working especially “Modify Sub Element” . I have used level points that we made in autocad and it works. Same method I made curbs but slab is 15cm thicker. It is rater complicated method and consuming a lot of time. Unfortunately revit can’t help too much or maybe I do not know how to make it more “automatic”.
    My question is if there is possibility to make walls attached to the ramps so they make something like concrete baluster?
    Greetings
    Leshkens
    Attached Files

    #2
    You could use the Conceptual Massing Tools to create the ramp and curbs.

    In your method, using floors--you could use a slab edge with a custom profile for the curbs.
    Cliff B. Collins
    Registered Architect
    The Lamar Johnson Collaborative Architects, St. Louis, MO
    Autodesk Expert Elite

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      #3
      double spiral ramp - wall around - solution

      Hi again,
      I have found solution - it's good to use railing and change profile to imitate concrete wall.
      Greetings
      Leshkens
      Attached Files

      Comment


        #4
        Originally posted by leshkens View Post
        Hi again,
        I have found solution - it's good to use railing and change profile to imitate concrete wall.
        Greetings
        Leshkens
        Hey nice peice of work...:thumbsup:

        Railing as walls a good trick, here is a link to an earlier thread on this subject.
        Mark Balsom

        If it ain't broke, fix it till it is.

        Comment


          #5
          Originally posted by leshkens View Post
          I was ask to check if double spiral ramp we are working on now in our office is correct. So I decided to model this in revit. First I was trying to use ramp tool but found it useless. Maximum slope was 1/ 6,666666666666667 = 15%. The external edge of the ramp was in fact no more than 15% but internal was even more than 22% so it was totally incorrect.
          ...
          What are the reasons for discarding the ramp tool for doing this? I don´t understand. It is possible with ramps, in my opinion. It seems like a lot of extra work to do this by editing points to floor elements.
          Freelance BIM Provider at Autodesk Services Marketplace | Linkedin

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            #6
            Hi,
            maybe you are right but I can't do this with standard ramp tool for now.
            What I have found that during sketching ramp if the Run line is shifted from middle of the ramp to internal circle than for sure slope for the whole ramp is o.k. so there is hope …….
            There is problem to make 360 degree spiral ramp – is it possible?

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              #7
              Originally posted by leshkens View Post
              ...There is problem to make 360 degree spiral ramp – is it possible?
              When you try to close the run of the ramp in a full circle, Revit leaves a gap, and issues a warning message. But, you can always do two halfs of 180 degrees each, to create the full circle.
              Freelance BIM Provider at Autodesk Services Marketplace | Linkedin

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                #8
                Thanks for all reply!
                Another problem is how to achieve cross slope of the ramp (min 3%) using standard revit ramp tool?
                Greetings
                Leshkens

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                  #9
                  With the Ramp tools, this may be very difficult if not impossible to create multiple slopes. I suppose it could be done with lots of point edits, but that could be very
                  time consuming.

                  I still think the Conceptual Massing would be a good choice for this. You can place reference points along a spline and create the form, which would allow for both the main spiral ramp slope, and the cross slope.
                  Cliff B. Collins
                  Registered Architect
                  The Lamar Johnson Collaborative Architects, St. Louis, MO
                  Autodesk Expert Elite

                  Comment


                    #10
                    Hi again,
                    thank you for all advices. I will try Conceptual Massing soon but for now to make ramp professionally for executive project I have to use traditional way. First I'm doing unwrapped inner and outer circle of the ramp in AutoCAD and finding levels of characteristic points in proper slope. Than I can use them also in Revit and final result is to have multiple slopes as you can see on attached drawing.
                    Greetings
                    Leshkens
                    Attached Files

                    Comment

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