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Joined: Fri, Aug 25, 2006
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Thought this might be of interest in case it comes up on any of your projects, or you’re asked advice from someone else re: similar issues. This project I'm working on has several models. 1. An Interior Architectural model 2. An Exterior/Shell Architectural model 3. A Structural model 4. An MEP model Issue: In our 1/8” floor plans, we currently have the Structural model set to “By host view” in the RVT Link Display settings. In the same plans, we have our Exterior model set to “By Linked View.” This is required because we need certain annotation elements that live in the Exterior model to display in our plans. The structural model is referenced into both the Exterior and Interior models as at Overlay. Unfortunately, there is a display issue with the Structural model at the exterior walls. Where Exterior walls and the Structural model’s columns overlap, the Exterior model graphically covers the columns. Obviously, this is not acceptable as the columns need to read in plan. Experimenting with visibility settings, I found that reverting the Exterior model to “By host view” solves the column display problem (they display correctly) but that’s not a workable solution since we do need to display the Exterior Linked view. I hopped into the Exterior model, looked at the reference plan, and saw that all looked good; the Structural model looked fine in the plans. What was up? While the Structural model looked good when viewed from the Exterior model, I realized that it was an “Overlay” not an “Attachment,” and decided to switch its Reference Type in the Exterior model. Bingo! When I went back into the Interior model, the columns showed up properly. When displaying a model by linked view, Revit tries to show that view exactly as it is in the linked model, but when that view contains an Attached element, those elements “by design” disappear in the host view. Unfortunately, even though we had a copy of the Structural model linked from our file, whatever “draw-order” Revit uses puts the Exterior “linked view” “in front of” the structural model. My conclusion is that we need to set the Structural model to “Attachment” within the Exterior model to get columns to display properly. This makes sense, since the Exterior model's view is dependent upon the linked Structural model elements, and since the model was an Overlay, the Interior model does not see that relationship from the Exterior model. Not a big deal, but as my colleague Todd replied when describing the situation to him, it's a good example of the thought that needs to go into the coordination of models as we transition from "little BIM" to "big BIM." Edited on: Sat, Feb 20, 2010 at 2:05:51 PM
Edited on: Sat, Feb 20, 2010 at 2:11:17 PM
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