Top 10 Tips For Revit Group Utilization


Top 10 Tips For Revit Group Utilization 

Using groups in Revit seems to be an obvious choice; we create groups for elements that are repetitive in one way or another and yet we are still able to quantify them as if they were individual elements. Modifying one instance of the group means that it will be updated everywhere in the entire project. One can even exclude an element from a group instance to make an exception. Over the years, Autodesk has improved upon this powerful tool, but has not made it more flexible. Using Revit to create groups the wrong way can confuse the software. The main problems occur when groups contain elements that are constrained outside the group. In the simplest form, if one was to create a group of elements including a door, the wall where the door is hosted would need to be within that group. In many instances the wall could have a top constraint that is not applicable for all instances. It is also common to create groups for casework that rely on the walls for placement, but the walls are not part of the group. Groups should generally be self-centered. These types of constraints can also cause problems in Design Options. With that being said, there are restrictions that one should be aware of when implementing the use of groups throughout any project.

Here are some tips:

1. Put elements and their hosts in the same group. 2. Ensure all elements in the group are hosted to the same level. – Some elements may not behave correctly. Line based families for instance or rotational errors in 3D space. 3. Don’t constrain elements outside the group. There are many kinds of constraints. 4. Large numbers of elements in a group will hinder performance, and possibly cause corruption. 5. It is better to have many small groups than a few large groups. 6. Don’t nest Groups. Don’t have groups inside groups. 7. If you see a warning asking you to fix the groups, don’t. Fixing the group really doesn’t fix the group. It actually explodes it or creates a new group that is no longer referenced to the first group. 8. Name groups correctly. Don’t make copies of groups called Group1. 9. Although we are now able to mirror groups, some elements with constraints still cause problems when mirrored. Ceilings in groups get confused when mirrored. 10. Take ownership of the group type workset when editing – All elements in a group reside on the group instance workset. – Be Aware of the ownership of type properties.

Notable Mentions:

– Be cautious putting floor or stairs in groups. Don’t lock the sketch lines to other objects. – Groups can be used to distribute elements and then can be un-grouped.   Applied Technology Group is a Platinum Autodesk Business Partner. Founded in North Little Rock, Ark., in 1992 as a local computer services company, ATG has grown to become a leading design technology partner with the purpose of assisting customers in maximizing the value and adoption of advanced technologies so they can perform competitively in the AEC sector. ATG collaborates with customers across the Gulf South, Midwest and Southwest through partnerships with 3DR, Autodesk, Leica, Microsoft and Panzura. Learn more about our company at www.atgusa.com. Autodesk and the Autodesk logo are registered trademarks or trademarks of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries.

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