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Revit Architecture 2011 Essential Training

Using constraints


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Revit Architecture 2011 Essential Training

with Paul F. Aubin

Video: Using constraints

So I'm here in the Constraints file from the Chapter 4/Exercise Files, and I'm going to add a little bit more smarts to the position of some of the objects in the model. Let's start with this closet right over here. So I'm going to zoom in on this area, and you'll notice that that closet door is not quite centered very well. If the builder built it that way, we'd all be a little bit upset, right? So, I'm going to go to the Annotate Tab, and I'm going to add a Permanent Dimension. Now so far, we've seen Temporary Dimensions, but what a Permanent Dimension is is a dimension that actually stays onscreen even after we deselect all the objects.
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  1. 1m 59s
    1. Welcome
      1m 27s
    2. Using the exercise files
      32s
  2. 13m 45s
    1. Introducing building information modeling (BIM)
      3m 0s
    2. Working in one model with many views
      5m 51s
    3. Understanding Revit element hierarchy
      4m 54s
  3. 47m 31s
    1. Using the Recent Files screen and the Application menu
      3m 21s
    2. Using the Ribbon and the Quick Access Toolbar (QAT)
      5m 3s
    3. Understanding context ribbons
      3m 0s
    4. Using the Project Browser and navigating views
      7m 37s
    5. Using the Properties palette
      10m 1s
    6. Selection and modification basics
      10m 27s
    7. Accessing Revit options
      8m 2s
  4. 42m 18s
    1. Creating a new project
      3m 26s
    2. Understanding the importance of template files
      5m 7s
    3. Understanding project settings
      6m 9s
    4. Opening and saving projects
      9m 9s
    5. Adding levels
      5m 0s
    6. Adding grids
      8m 41s
    7. Adding columns
      4m 46s
  5. 58m 21s
    1. Adding walls
      8m 39s
    2. Using snaps
      6m 39s
    3. Understanding wall properties and wall types
      7m 24s
    4. Locating walls
      7m 34s
    5. Using the modify tools
      7m 33s
    6. Adding doors and windows
      6m 37s
    7. Using constraints
      4m 47s
    8. Adding plumbing fixtures and other components
      4m 8s
    9. Using Autodesk Seek
      5m 0s
  6. 50m 52s
    1. Working with DWG files
      7m 51s
    2. Creating topography from a DWG link
      7m 45s
    3. Understanding CAD inserts
      6m 8s
    4. Using import tips
      4m 6s
    5. Creating a group
      9m 20s
    6. Working with Revit links
      9m 3s
    7. Managing links
      5m 51s
    8. Understanding file formats
      48s
  7. 1h 2m
    1. Working with floors
      8m 37s
    2. Working with footprint roofs
      7m 13s
    3. Working with extrusion roofs
      6m 0s
    4. Roof modifications and examples
      6m 27s
    5. Working with slope arrows
      6m 17s
    6. Adding openings
      8m 13s
    7. Working with stairs
      7m 41s
    8. Working with railings
      4m 29s
    9. Working with ceilings
      7m 36s
  8. 35m 52s
    1. Creating a custom basic wall type
      6m 10s
    2. Understanding stacked walls
      7m 31s
    3. Adding curtain walls
      6m 50s
    4. Adding curtain grids, mullions, and panels
      6m 44s
    5. Creating wall sweeps
      8m 37s
  9. 32m 43s
    1. Using object styles
      4m 45s
    2. Working with visibility/graphic overrides
      6m 52s
    3. Using Hide/Isolate
      7m 11s
    4. Understanding view range
      7m 40s
    5. Using the Linework tool
      4m 2s
    6. Using cutaway views
      2m 13s
  10. 21m 44s
    1. Adding rooms
      7m 4s
    2. Controlling room numbering
      8m 16s
    3. Understanding room bounding elements
      6m 24s
  11. 27m 2s
    1. Understanding tags
      7m 42s
    2. Adding schedules
      6m 50s
    3. Modifying schedules
      6m 8s
    4. Creating a key schedule
      6m 22s
  12. 48m 38s
    1. Adding text
      7m 21s
    2. Adding dimensions
      7m 26s
    3. Adding symbols
      3m 54s
    4. Adding legend views
      4m 42s
    5. Creating a detail callout
      6m 25s
    6. Using detail components
      9m 36s
    7. Adding filled and masking regions
      9m 14s
  13. 34m 39s
    1. Understanding families
      2m 37s
    2. Using reference planes, parameters, and constraints
      10m 46s
    3. Adding solid geometry
      8m 40s
    4. Adding void geometry
      4m 49s
    5. Completing the family
      7m 47s
  14. 32m 6s
    1. Adding sheets
      7m 58s
    2. Working with placeholder sheets
      4m 16s
    3. Outputting sheets to a DWF file
      6m 5s
    4. Exporting to AutoCAD
      5m 50s
    5. Plotting and creating a PDF
      7m 57s
  15. 25s
    1. Goodbye
      25s

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Revit Architecture 2011 Essential Training
8h 30m Beginner Jul 23, 2010

Viewers: in countries Watching now:

In Revit Architecture 2011 Essential Training, author Paul F. Aubin shows how to create compelling architectural designs using the modeling tools in Revit. This course covers the entire building information modeling (BIM) workflow, from design concept to publishing. It 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 adding 3D geometry. Exercise files are included with the course.

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 filled and masking regions and detailing
  • Generate schedules and reports
  • Understanding families
  • Using reference planes, parameters and constraints
  • Outputting files, including DWF and PDF files
Subjects:
Architecture BIM Previsualization CAD 3D Drawing
Software:
Revit Architecture
Author:
Paul F. Aubin

Using constraints

So I'm here in the Constraints file from the Chapter 4/Exercise Files, and I'm going to add a little bit more smarts to the position of some of the objects in the model. Let's start with this closet right over here. So I'm going to zoom in on this area, and you'll notice that that closet door is not quite centered very well. If the builder built it that way, we'd all be a little bit upset, right? So, I'm going to go to the Annotate Tab, and I'm going to add a Permanent Dimension. Now so far, we've seen Temporary Dimensions, but what a Permanent Dimension is is a dimension that actually stays onscreen even after we deselect all the objects.

So let me go ahead and add this one. I'm going to use Tab Key to highlight the inside face of the wall. Then I'm going to move over here and highlight the door, and you'll see how it will actually find the center the door, and then I'll click that, and then I'm going to Tab again to find the inside face of the wall, click one more time, and then just pull the dimension out here somewhere, and click one last time to place the dimension. So you click on each of the items you want a dimension, and then your final click is where you want that dimension to go. Now you can see, those dimensions are at very strange fractional numbers, and so we want to take care of that.

If I were to deselect everything, that dimension stays onscreen, so this is why we refer to this as a Permanent Dimension. When I click on it, you'll see that there is this little control over here, EQ with a slash through it. This is the Toggle Dimension Equality Setting. And if I click that, it'll actually change the dimension to an Equal dimension, and it will move the door to actually be centered between the two walls that I started with. Now what's really powerful about this is it's not just a one-time modification. This is an ongoing constraint that Revit now has applied to that condition.

So if I were to come in here and select this wall and move it, you'll notice that the Equality dimension stays applied, and the door adjust just stays centered within the closet. That's pretty handy. So anytime we go in here and make a change, it will keep that change live. So let's look at another example. Suppose I wanted to simply control the position of this door off of the position of this wall. I can do the same basic process. I'll Tab into the inside face of the wall.

This time, I'll highlight the face of the door, rather than the center the door, and I'm going to place the dimension over here. So I'm only going to place one dimension this time. I'm not going to dimension multiple objects. Now right below the dimension, you'll see this little icon. It looks like an open padlock, and if I click that, it closes the padlock, and I've now applied a lock constraint to the door's position. And the way that one works is if this wall were to move, it will take the door along for the ride. I'm going to ahead and undo that because I don't really want to actually make that modification, but now we've built that constraint into the model.

I'll type ZF here to zoom in my window to fit. What's really handy about the constraints is if you have a certain design condition that you're trying to maintain and you want to make sure that that relationship gets maintained, you can build that design intent into the model by applying these constraints. Now I would be remiss here if I didn't caution you just a little bit: Don't go crazy and add constraints everywhere just because you can. Just because you see a little lock icon, doesn't mean you have to click it. You want to reserve these modifications for the places where they really have meaning and value, and when they really add something to your project.

I have one more example to show you, and I'm going to do that in a file here called Equality Toggle in the Exercise Files folder. So we did it here with a few doors. Constraints work equally well on any kind of geometry. So in this case, I have these four offices over here on the side of the plan, and they're all over the place, the dimensions are all random. So what I'm going to do is go to the Annotate Tab one more time, click on my Align dimension tool, and I'm going to pick this wall, then this wall, then this one, this one, and I will end up over here.

I'm going to pull the dimension out here, and if you look at those numbers, you can see that not a single one of those numbers is the same. Now, here is my EQ Toggle. I'll just simply click on that and watch the offices when I do. You see how they all instantly snap to equal sizes, and an extra little benefit that you can do here is if you select the dimension and right-click it, you can actually toggle off the Display of EQ. That's just the default. Now that doesn't turn off the constraint. So in this case, each office is a little larger than 11 and five inches.

They are still equally spaced. So again, if this wall were to move, it will move all of the walls with it and keep them equally spaced. So once again, I'm going to undo that change, but you can see the power of these various constraints that we can toggle on.

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