Groups within Revit are like groups within any program, they allow you to keep Revit objects together. Revit has two types of groups Detail and Model groups. Detail groups keep detail lines and 2d detail components together. Model groups keep 3d model objects like walls, doors, and furniture together. Model groups can also have Detail groups embedded within them.
Over the years I’ve talked about Source Files, (Source files are files used as sources of information for more than one project, the National Cad Standard calls these type of files Library files.) One of the Source files I’ve recently have been developing is a Groups source file. Within my Groups Source file I have two types of groups System groups, and Space groups.
System groups is where I have like systems grouped together. An example of this is a wood partitions group. By grouping all of the wood partitions that I have developed over the years I can keep them out of my template project and only insert them when I’m doing that type of project.
Spaces or Room groups are groups of predefined room. For example you have a space group of a Toilet room, this group has finish wall, plumbing fixtures, toilet accessories, a finish floor and a ceiling at the correct height for a typical toilet room. This typical toilet group can be place in a new model and moved around as your planning your space.
What’s great about this toilet group is taking it out of Schematic phase of the project and taking it into the Construction document phase. If you don’t explode the group before you go into the CD phase of the project you can attach detail groups that are defined in the toilet group to group in the enlarged plan and elevations views of the toilet and you have notes and some dimensions of the toilets in a matter of seconds, which could save about a 1/2 hour or more. (here is a quick video showing using a space group)
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