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    Relocated Model

    Hey All,

    I have encountered this issue.
    Unfortunately I have been handed a legacy model and it has issues. When the file was first created, the building was modelled at a large distance from the internal Revit origin. The guys have been busy working away. They got to a point of detailing, all good.
    What has seemed to have happened now is that the views, when placed on sheets and printed, seem to omit a large portion of the information. The 3dViews seem to be a bit screwed as well. It looks OK on the sheet in Revit, but when printing, it just leaves information / lines / objects etc out.

    I believe that they have tried to "relocate" the model using the Manage / Position / Relocate Project tool and placed the model closer to the origin, but it still seems to be missing information when printing.

    Has anyone seen this behaviour before?
    Andrew Harp
    BIM Manager GHD
    If you are not willing to learn, no one can help you.
    If you are determined to learn, no one can stop you.

    #2
    I would not expect the distance from the origin to be the problem--I'd suspect rather a printing issue. Have you tried using Raster instead of Vector settings in the print driver? Have you tried printing to PDF? I suppose it COULD be the origin or Project Base Point, but it just doesn't sound like that would cause the printing problems.
    Cliff B. Collins
    Registered Architect
    The Lamar Johnson Collaborative Architects, St. Louis, MO
    Autodesk Expert Elite

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      #3
      HI Cliff,
      Yeah it all seems a bit weird to me as well. I will try your suggestions tomorrow when I get a good look at the file. I must admit, the information has been passed to me second hand and I haven't had a chance to interrogate the file as yet. I will definitely keep all updated when I can see for myself.

      Cheers
      Andrew Harp
      BIM Manager GHD
      If you are not willing to learn, no one can help you.
      If you are determined to learn, no one can stop you.

      Comment


        #4
        Distance from the origin is a problem according to Revit developers, assuming it a pretty big distance. Using Relocate Project however is "sleight of hand". The project doesn't really move closer to the origin, just Revit's shared coordinate system adjusts to reflect different coordinates. To get the model closer it actually needs to move closer, pick it up and move... easier said than done. If you don't need to salvage the documentation it can be Linked to another file near the origin > Bind Link > Ungroup. You lose the sheets and documentation/annotation but the building is "easier" to "move" that way, assuming your computer doesn't run out of ram trying to process the Binding and Ungrouping. Good luck!

        Comment


          #5
          Hi Steve,
          I have had a chance to look at the model today. I definitely think it is a distance form origin issue from the initial set up. The key indicator of this is the concrete hatch pattern, It is appearing as it is the plaster / sand hatch pattern. (similar to what happens in AutoCAD when hatching large distances from the 0,0)

          A couple of other issues are, dimension witness lines read the correct distance, however they are not located on the object they are referencing. The witness lines are all offset 2-3mm from the element they are dimensioning. However, they seem to snap to grids perfectly, just not modelled objects.

          The third issue is when working in a plan view, either overall or callout, Revit struggles to pick any element you are trying to work with. Example, trying to place a filled or masking region, when in sketch mode, using the snap tools, the pointer will snap to the element but offset 2-3mm. When you complete the command, the sketch line will be on the face of teh element, where it is supposed to be. It is getting very frustrating trying to model and detail without accurate picking tools.

          Has anyone seen this type of behaviour before?
          Andrew Harp
          BIM Manager GHD
          If you are not willing to learn, no one can help you.
          If you are determined to learn, no one can stop you.

          Comment


            #6
            Originally posted by Drew View Post
            Hi Steve,
            I have had a chance to look at the model today. I definitely think it is a distance form origin issue from the initial set up. The key indicator of this is the concrete hatch pattern, It is appearing as it is the plaster / sand hatch pattern. (similar to what happens in AutoCAD when hatching large distances from the 0,0)

            A couple of other issues are, dimension witness lines read the correct distance, however they are not located on the object they are referencing. The witness lines are all offset 2-3mm from the element they are dimensioning. However, they seem to snap to grids perfectly, just not modelled objects.

            The third issue is when working in a plan view, either overall or callout, Revit struggles to pick any element you are trying to work with. Example, trying to place a filled or masking region, when in sketch mode, using the snap tools, the pointer will snap to the element but offset 2-3mm. When you complete the command, the sketch line will be on the face of teh element, where it is supposed to be. It is getting very frustrating trying to model and detail without accurate picking tools.

            Has anyone seen this type of behaviour before?
            All of the issues you are describing sound like a "far from the origin" type of issue. Steve's comments about how the relocate tool works is also correct. In addition to the project base point and the survey point there is an "internal" coordinate system too, with its' own origin. You must be very far from this internal origin point.

            Steve is right on with his suggestions as well. Unfortunately once a lot of documentation has been done this "solution" is less and less appealing.
            Jeff Hanson
            Sr. Subject Matter Expert
            Autodesk, Revit - User Experience

            Comment


              #7
              The inaccuracy you describe when trying to snap to something and the witness line misalignment are both symptoms of the "far-from-origin" disease. The mathematics involved with displaying things on screen starts to "chop" off decimal accuracy (truncating values) and the graphics engine loses the ability to show these things accurately. You are snapping to things correctly but it can't look convincing on the screen. Unfortunately the only way to really fix it is to move closer to the origin. If you've still got some significant time to spend on the project you should get it over with so you can get back on track.

              Comment


                #8
                Thanks guys.
                Much appreciated.
                Andrew Harp
                BIM Manager GHD
                If you are not willing to learn, no one can help you.
                If you are determined to learn, no one can stop you.

                Comment

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