Revit Architecture 2013 Essential Training
Illustration by Richard Downs

Understanding Revit element hierarchy


From:

Revit Architecture 2013 Essential Training

with Paul F. Aubin

Video: Understanding Revit element hierarchy

In this movie we'll explore some high- level concepts common to the Revit platform. All elements in Revit fit into a built-in hierarchy. The purpose of this movie is simply to expose you to some of these high-level concepts and give you a better understanding of how the elements in this system fit into the larger framework. So I am going to start with the broadest grouping, all of the elements in the software could be grouped broadly into some major groupings, I'd like to call them buckets. So if you thought of model element's one big bucket and then we also have a view elements, datum elements, and annotation elements.
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  1. 1m 57s
    1. Welcome
      1m 2s
    2. Using the exercise files
      55s
  2. 14m 43s
    1. Introducing building information modeling (BIM)
      3m 0s
    2. Working in one model with many views
      4m 48s
    3. Understanding Revit element hierarchy
      6m 55s
  3. 54m 44s
    1. Understanding the different versions of Revit
      1m 19s
    2. Exploring the Recent Files window and the application menu
      5m 20s
    3. Using the ribbon and the Quick Access Toolbar (QAT)
      7m 12s
    4. Understanding context ribbons
      4m 43s
    5. Using the Properties palette
      8m 31s
    6. Using the Project Browser
      5m 34s
    7. Navigating views: Zooming, panning, and rotating
      5m 57s
    8. The basics of selecting and modifying
      9m 49s
    9. Accessing Revit options
      6m 19s
  4. 47m 6s
    1. Creating a new project from a template
      7m 42s
    2. Accessing a multi-user project with worksharing
      4m 16s
    3. Configuring project settings
      6m 33s
    4. Adding levels
      7m 40s
    5. Adding grids
      6m 23s
    6. Refining a layout with temporary dimensions
      6m 58s
    7. Adding columns
      7m 34s
  5. 1h 11m
    1. Adding walls
      8m 48s
    2. Using snaps
      6m 24s
    3. Exploring wall properties and types
      7m 37s
    4. Locating walls
      7m 27s
    5. Using the modify tools
      9m 32s
    6. Adding doors and windows
      7m 39s
    7. Using constraints
      8m 27s
    8. Adding plumbing fixtures and other components
      8m 39s
    9. Using Autodesk Seek
      4m 19s
    10. Using wall joins
      3m 0s
  6. 1h 11m
    1. Linking AutoCAD DWG files
      10m 59s
    2. Creating topography from a DWG link
      7m 43s
    3. Understanding CAD inserts
      7m 56s
    4. Import tips
      6m 49s
    5. Creating a group
      7m 10s
    6. Mirroring groups to create a layout
      5m 3s
    7. Creating Revit links
      5m 16s
    8. Rotating and aligning a Revit link
      7m 6s
    9. Establishing shared coordinates
      6m 5s
    10. Managing links
      6m 0s
    11. Understanding file formats
      59s
  7. 1h 13m
    1. Working with floors
      8m 57s
    2. Working with footprint roofs
      6m 22s
    3. Working with extrusion roofs
      4m 59s
    4. Attaching walls to roofs
      3m 17s
    5. Using the shape editing tools to create a flat roof
      6m 33s
    6. Working with slope arrows
      6m 0s
    7. Adding openings
      8m 33s
    8. Working with stairs
      8m 4s
    9. Adding railings to stairs
      3m 40s
    10. Working with ceilings
      9m 36s
    11. Adding extensions to railings
      7m 20s
  8. 48m 34s
    1. Creating a custom basic wall type
      10m 18s
    2. Understanding stacked walls
      8m 12s
    3. Adding curtain walls
      8m 17s
    4. Adding curtain grids, mullions, and panels
      10m 59s
    5. Creating wall sweeps and reveals
      6m 26s
    6. Exploring model lines
      4m 22s
  9. 47m 40s
    1. Using object styles
      4m 19s
    2. Working with visibility and graphic overrides
      7m 3s
    3. Using view templates
      6m 13s
    4. Hiding and isolating objects in a model
      6m 37s
    5. Understanding view range
      7m 7s
    6. Displaying objects above and below in plan views
      6m 35s
    7. Using the Linework tool
      5m 21s
    8. Using cutaway views
      4m 25s
  10. 21m 28s
    1. Adding rooms
      8m 15s
    2. Controlling room numbering
      6m 13s
    3. Understanding room bounding elements
      7m 0s
  11. 33m 13s
    1. Understanding tags
      9m 58s
    2. Adding schedule views
      7m 55s
    3. Modifying schedule views
      7m 12s
    4. Creating a key schedule
      8m 8s
  12. 58m 40s
    1. Adding text
      7m 29s
    2. Adding dimensions
      9m 6s
    3. Adding symbols
      4m 42s
    4. Adding legend views
      4m 51s
    5. Creating a detail callout
      8m 31s
    6. Adding detail components
      8m 52s
    7. Using arrays to duplicate objects parametrically
      7m 43s
    8. Adding filled and masking regions
      7m 26s
  13. 41m 29s
    1. Understanding families
      2m 37s
    2. Creating a new family from a template
      6m 29s
    3. Using reference planes, parameters, and constraints
      7m 52s
    4. Adding solid geometry
      8m 40s
    5. Cutting holes using void geometry
      5m 9s
    6. Adding blends
      6m 2s
    7. Completing the family
      4m 40s
  14. 38m 48s
    1. Adding sheets
      7m 44s
    2. Working with placeholder sheets
      5m 24s
    3. Aligning views with a guide grid
      5m 57s
    4. Outputting sheets to a DWF file
      6m 39s
    5. Exporting to AutoCAD
      5m 42s
    6. Plotting and creating a PDF
      7m 22s
  15. 2m 38s
    1. Next steps
      2m 38s

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Watch the Online Video Course Revit Architecture 2013 Essential Training
10h 27m Beginner Aug 02, 2012

Viewers: in countries Watching now:

Find out how to create compelling architectural designs using the modeling tools in Autodesk Revit software. In this course, author Paul F. Aubin demonstrates the entire building information modeling (BIM) workflow, from creating the design model to publishing a completed project. The course also covers navigating the Revit interface; modeling basic building features such as walls, doors, and windows; working with sketch-based components such as roofs and stairs; annotating designs with dimensions and callouts; and plotting and exporting your drawings.

Topics include:
  • Introducing building information modeling (BIM)
  • Adding levels, grids, and columns to set up a project
  • Creating building layouts with walls, doors, and windows
  • Modifying wall types and properties
  • Working with DWG files and CAD inserts
  • Adding rooms
  • Adding curtain grids, mullions, and panels
  • Using cutaway views
  • Generating schedules and tags
  • Adding callouts such as text and symbols
  • Understanding families
  • Outputting files, including DWF and PDF files
Subject:
CAD
Software:
Revit Architecture
Author:
Paul F. Aubin

Understanding Revit element hierarchy

In this movie we'll explore some high- level concepts common to the Revit platform. All elements in Revit fit into a built-in hierarchy. The purpose of this movie is simply to expose you to some of these high-level concepts and give you a better understanding of how the elements in this system fit into the larger framework. So I am going to start with the broadest grouping, all of the elements in the software could be grouped broadly into some major groupings, I'd like to call them buckets. So if you thought of model element's one big bucket and then we also have a view elements, datum elements, and annotation elements.

What I am going to focus on mainly in this movie is model elements and annotation elements. The model elements are anything that represent an actual thing; something that's real in the building when the building is built. So if you can walk up to something and put your hand on and touch it, it's a model element. And the annotation elements are things that aren't real, things that describe objects in a set of drawings but aren't necessarily built in the actual building. So let me show you some examples.

I am here in Revit in a file called Hierarchy, and it's included with the exercise files if you'd like to follow along, or you can open any Revit file that has both model and annotation objects in it. Now I'd like to illustrate a few other points that I was just discussing. For example, over here I have a wall, here I have a door, here I have a stair and a railing. Those would be considered model elements. They are actual parts of the building, if the building was built you could go and walk up to those objects and you could touch them, they are real elements. Contrast that to things like this wall tag or this door tag or these dimensions or this bar scale, those items are not real in the sense that nobody is going to paint them on the floor of the finished building or they are not going to build the bar scale out in front of the facility.

They are representational objects that are meaningful for an architectural drawing, but they're not actually physical objects. Now those objects behave fundamentally different in Revit. A model element, as we saw in the previous movie, is a live object that if you change it in one view, such as taking this door and moving it over here, it will be reflected in any other view. If I switch to another floor plan you can see that that door has already moved.

Now in this floor plan you can see that the annotation is actually quite different. There are no dimensions over here, there is no bar scale, some of the room tags are outside of the rooms rather than inside, the door tags are not even included in the door. So there is clearly a difference between the way the annotation appears in this level 1 furniture plan versus the way that it appeared here in the level 1 floor plan. So let me show you an example of that. If I take this room tag, here in the furniture plan, and I move it, say over to this location, if I return to my original level 1 floor plan notice that the corridor room tag is still in the original location and that's because each of these floor plans maintains its own version of its annotation.

So the annotation is what we call view -specific, it belongs to the view in question; level 1 in this case or level 1 furniture in the alternate case. If we change the model as we saw it changes everywhere. So that's a main distinction between the model versus the annotation. Now there is another stage of the hierarchy that we also want to understand. If I highlight one of the objects you'll see a tooltip appear on screen. You'll see that same tip appear down in the lower left-hand corner of the screen.

Now that information you can see there's actually three bits of information there, currently the status line says walls, then basic wall, then interior 4 7/8' partition. If I switch over this door, you'll see it says Doors, then Single-Flush, then 36'x84'. Now what that is, is a three-step object hierarchy that all elements, both model and annotation share in common. We have a category, we have a family and we have a type.

Categories are a built-in list of object types that are available in the software. You and I cannot change this list. Examples might be doors, or walls, or stairs or door tags. Those are all categories. The behavior of each of those categories is well-defined, built into the software, and we just simply use objects of those categories. The next tier in the hierarchy is the family. Certain families are built-in, we call those system families and we'll discuss that in more detail in a future movie, and we also have what we call component families which are families that you and I actually can modify, and again we'll talk about that in a future movie.

But conceptually what a family is, is really just a much more specific version of some object in a particular category. So if you think about doors in general all a door does is cuts a hole in a wall and allows people to walk through, but doors come in many shapes and sizes. We have single-flush swinging doors, we have double doors, we have sliding doors and revolving doors; each of those kinds of door would be a family. What it means to be a revolving door is a little different than what it means to be a swinging door or bifold door.

So we have family to distinguish those differences. Now even within the family you might have variations, the most common would be different sizes. So in the Revit hierarchy we call those types. So if that single-flush door comes in a 36-inch wide type and a 30-inch type we would have a type for each of those conditions. If that revolving door comes in one size, or another size, or one type of construction, or another type of construction, we would make types for that.

So every object in the hierarchy belongs to category, family, and type. And another way to look at that would be to say that each element in your model like this door that I can select here onscreen belongs to a type, that type is part of a family, and that family is part of a category. And again, it doesn't matter if we are talking about a model element or an annotation element for this point here. If I look at this room tag it's got the same three-step hierarchy; category, then family, then type.

Or this bar scale down here which is Category Generic Annotation Graphic Scale1-8 is the family and the type name is similar. So every object falls into this multistep family type category hierarchy and all of the objects fit into those larger buckets.

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