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Using snaps

From: Revit Architecture 2013 Essential Training

Video: Using snaps

In this movie, I want to show you the snapping behavior in Revit. Snaps are just simply rules that allow the software to lock onto certain key increments, either length increments or geometric points on objects. Revit has a few useful snapping features, we have our length increment snap feature which is tied to the zoom level on the screen, and we have object snapping behavior, things like endpoints and midpoints. And I would like to show you both of those features here in this movie. I'm in a file called Snaps and this is just based on the default template.

Using snaps

In this movie, I want to show you the snapping behavior in Revit. Snaps are just simply rules that allow the software to lock onto certain key increments, either length increments or geometric points on objects. Revit has a few useful snapping features, we have our length increment snap feature which is tied to the zoom level on the screen, and we have object snapping behavior, things like endpoints and midpoints. And I would like to show you both of those features here in this movie. I'm in a file called Snaps and this is just based on the default template.

And to show you the length increment snapping feature, I need to zoom out a little bit. So the easiest way to do this is to use the Zoom Out(2x) Command right here. So if it is already chosen, you can just pick it off the list, otherwise you can choose it here from the dropdown and that will back up the screen a little bit. Now on the Architecture tab, I'm going to go over here to the Wall command or type WA, I'm just going to click any start point. Now you'll notice that the temporary dimension says zero, so Revit just always snaps relative to whatever that first point you clicked was.

So it indicates that as zero. I'm going to slowly start to move my mouse a little bit and what you'll see is, it's sort of jumping. It doesn't move fluidly, it sort of jumps. And if you look carefully at the dimension, you'll see that it's jumping in four foot increments. This is the length angle snapping behavior. If I click my second point, that wall is exactly 48 feet long. Move in another direction, okay, now that wall is 16 feet long. It works at any angle, so I can do it along angles or straight lines.

I'm going to press Escape. If I zoom in, and I'm using my wheel to zoom in, click a new point and start to move, notice that the increment has changed, now it's much more fine, it's going to every 6 inches. Now without even clicking, I'm going to go back to zero and zoom in a little bit closer and move again, and I guess, I got to go a little closer still, sometimes it takes a little practice to get the right increment, there it is, you can see that now it's doing every inch, okay.

So now if I click, that wall was exactly four foot, ten inches. If I continue to zoom in very close and I just use my wheel to do that, now you'll see that I'm snapping to every quarter of an inch. So what's really handy about this feature is just simply in the course of your zooming in and out, it will adjust the degree to which it's snapping, so you don't have to go back and change a setting, it sort of does this automatically. Now where is this control? I'm going to do ZF on my keyboard for zoom to fit just to back out all the way again.

I'm going to go to Manage tab, and it's the Snaps dialog right here that controls this behavior. So I'm going to click on that. And right here at the top, this is the feature that we just witnessed, it's the Length dimension snap increments. Now you'll see here that there's a number, the first number says 4 foot, and then a semi-colon, and then it says 6 inches and a semi-colon. So the semi-colons separate one increment from the next. You can change any of these values and you can introduce new values. So if I wanted to add a 2 foot snap increment, I could put it right there.

You don't have to actually put it in order, I can just simply click OK, if I go back to Snaps, notice that it reorganizes it and it put the 2 feet in the right sequence. Now let's see how that behaves, if I go to Architecture, click on the Wall command, right now you can see that at the level of zoom I'm at I'm getting a 2 foot increment. Now notice that if I get nearby some other geometry, that takes precedence. So in addition to the length angle snap, Revit will always look at nearby geometry and try to snap to it.

So in this case, I'm getting something with a fractional increment clearly not on a 2 foot increment but if I move past that, then it goes back to the 2 feet, okay. And again, if I start to zoom, I would get the different increments. You can also remove increments if you don't want to snap to all those, so all of that is controlled in that dialog. Also in that dialog we see Object Snaps. Now if you've used any CAD program before than object snapping is a familiar concept. All this geometry has certain key points, we have endpoints at either end of a line, we have the midpoint halfway between, we have quadrants on circles, we have perpendicular and tangent points, you can snap to any of these things.

I'd like you to note here in parentheses that each of these items has a keyboard shortcut. So if you remember those, you can actually use those on screen when Revit is trying to snap to a point that you don't like, you can tell it no I meant the endpoint, or no I meant the intersection by simply typing those letters. Maybe just jot these down or take a screen capture to keep it handy, but they're pretty easy to remember because they all start with the letter S. So let me click OK here and let's see how this behaves. I'm going to zoom in slightly with my wheel, let's go to Architecture, let's click Wall, right there that little square that's endpoint, and then here that little triangle that's midpoint, and then if I come over here and you see that little x right there, that's intersection.

So the symbols will become familiar to you with practice, but each of those little symbols indicates a different kind of snap. Now suppose I'm coming over here and it's trying to snap to the endpoint, but I really wanted the midpoint, this is where I could type S M, snap to midpoint. And as I move around now, you'll see that it's only seeing the midpoints of the various objects, that I try and snap to. After I click, it goes back to looking for everything, so that override with the keyboard shortcut is for one click only.

And so with the little practice you will get the hang of those, they will become an important part of your arsenal, but both the length increment snapping and the object snapping are tools that you'll just use intuitively all the time as you're working. So those features are sort of there in the background all the time but just keep in mind that you can override the behavior either by going to the snap dialog and putting in new increments, turning on and off object snaps or using the keyboard shortcuts to override on-the-fly as you're working.

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This video is part of

Image for Revit Architecture 2013 Essential Training
Revit Architecture 2013 Essential Training

96 video lessons · 12701 viewers

Paul F. Aubin
Author

 
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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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