Drawing revisions?

One of the advantages of using 2D drawings generated from a 3D model is that any changes made to the model mean that the drawing sheets are updated automatically. This is fine in theory.

My question is, how do people deal with drawing sheet revisions?

eg. I have 3D model A from which I generate views attached to sheets, with no revision. I can't update/amend 3D model A because these changes will propogate to the (non revised) sheets. This means that I have to copy Model A to create Model B which I then can update and use it's views to attached to rev. A drawings sheets.

Any thoughts/comments welcome.

  • Open the reference settings and un-tick "synchronise with view". Now you will need to update the referenced view manually to show changes to the model.

  • Unknown said:

    Open the reference settings and un-tick "synchronise with view". Now you will need to update the referenced view manually to show changes to the model.

    Thanks for the information. Is this the way you do it? [edit. Do you mean un-tick the "synchronise with saved View".?]

    What do other BA users user?

  • That sounds a bit complicated.  We just have a single model.

    If there is an option that becomes a separate model/ separate drawing sheet, until it either gets discarded or incorporated back into our single model.

    If there is a major change that affects all the sheets then all the sheets get reisssued.

    A small change might not trigger reissing all the documents, as it will get picked up as a general update in a later issue.

    It depends a lot on the stage of the project is at (sketch design vs contract documentation/tender) and the extent/impact of the change.  

    It seems to develop into a common sense thing - reissue the documents that other consultants/contractors will need/refer to to do their work, and try to avoid drowning them in unnecessary clouded  sheets, all showing the same revision.

    It will depend on your project, contractural requirements etc.

  • Sounds like you need to implement some form of versioning.

    Design History seems to be the obvious place to start, but this would keep copies of the 3d model. Apparently, the number of versions needs to be managed to keep things workable, especially since the 3d model tends to be the heaviest file.

    Can DV/BV made to behave a bit like DEM ? DEM generated the extraction graphics, and could defer the extractions. In contrast, DV's are generated 'dynamically' and volatile... But it should be possible to change this.

    There is a switch in the Saved Views dialogue that gives the user the option to 'synchronise' the view. But, I think it applies to the level and view settings only.

    Should be pretty 'easy' for Bentley to store a versioned copy of the DV in the sheet file using DH or storing a copy of the extraction as a separate model or cell in the file.

    When the sheet file is opened, the open file dialogue could be expanded to show the files referenced, including their status and version. There would be the option to load the ref 'As Saved' (as is currently) or last Major or Minor revision (DH versions). See CoCreate's webinars on ModelManager for a taste of how this could work.