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Spinning annotations in Revit MEP 2011

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    #1

    Spinning annotations in Revit MEP 2011

    Has anyone experienced 2D annotations (symbols) spinning out of synch with viewports?
    We have a project where the slab is split into 4 separate 2D drawings for each level. 2 of the sheets require the viewport to be spun 90 degrees to fit it onto a sheet of paper.

    (The contractor who will be recieving this information is not interested in 3D so we are having to use Revit as a 2D CAD tool as well as 3D design sadly)

    The item in question is a smoke detector with remote indicating LED as shown on the attached images. In the Correct Location.png you can see the RI in the riser as it is meant to be, but in Spun Location.png the RI has moved 180 degrees. This is consistent behaviour on all floors.

    The family is created with a 3D smoke detector hosted on the ceiling. The symbol is a nested family consisting of 2 families, the detector itself and the remote indicator being nested therein.
    Both the 3D and 2D are hosted on the same plane to ensure that they appear in the same place but with some wizardry allowing the user to offset the 2D symbol left or right if there is congestion on the 2D drawing with other symbols (which are larger than life) in the vicinity.
    I have been :banghead: for the past couple of days trying to lock the thing into one position.

    Thank you,
    Attached Files
    Don't cry, don't raise your eye, it's only Revit wasteland.
    Tags: None
    #2
    Could you post the family? Are either one checked as "always vertical"?
    Martijn de Riet
    Professional Revit Consultant | Revit API Developer
    MdR Advies
    Planta1 Revit Online Consulting

    Comment

      #3
      I am unable to post the family just now for rather draconian intellectual property reasons. We're still rather coy in the UK about who gets to see what, even when it does shoot ourselves in the foot like this sadly.
      Could you explain please what you mean by checked as "always vertical"? They are horizontally mounted along the plane of the ceiling.
      Don't cry, don't raise your eye, it's only Revit wasteland.

      Comment

        #4
        There are certain types of families which have a checkbox in their properties which says "always vertical". If you used one of those, then nest it into a face based host, it will keep orientated as inserted. This might cause the behaviour you're seeing right now. Although it's hard to say without the actual family. Btw: is this really something to be worrying about?? Doesn't seem that special to me...
        Martijn de Riet
        Professional Revit Consultant | Revit API Developer
        MdR Advies
        Planta1 Revit Online Consulting

        Comment

          #5
          It is important as the RI symbol shows the location n 2D of a remote indicator LED for the smoke detector. It is used to show if the detector in the riser is the detector causing the system to go into alarm.

          We have fixed the problem by amending the symbol which had previously consisted of a symbol family of the smoke detector (the round target looking thing) with the long dotted line and the RI in a circle as a separate nested family.
          It appears that the constraint in the main family which rotates the annotations consistent with the 3D model (Which in turn rotates in view as the viewport requires it to.) does not apply to families nested within the first symbol family. So de-nesting this family meant that the symbol came under the influence of this rotational constraint.

          Now the whole thing rotates with the viewport allowing it to remain in the correct place and not confusing the contractor further than my electrical designs usually do.

          Thank you for your help in this matter! It is a bit of a bind having to provide a 2D output in Revit. This is our first project and we really want to show off our 3D abilities. We have spent a year learning how to use this thing and our contractors are not interested in taking the Building Information Modelling (BIM) information. They want to stay in the 20th century.

          One hurdle at a time...
          Don't cry, don't raise your eye, it's only Revit wasteland.

          Comment

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