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Working with slope arrows

From: Revit Architecture 2013 Essential Training

Video: Working with slope arrows

There is one more way that we can create slope in a roof or even in a floor slab, and that's using something called a slope arrow. So I am in a file called Slope Arrows, and slope arrows are typically used when the slope that you want to define doesn't run perpendicular to the edge. So another way to state that is when we used the Slope Defining check box in the previous movies, it was turning that edge of the sketch into a piano hinge. So if I select this roof right here and I edit the footprint, if I select one of these edges and turn on Defines Slope, it's kind of like this is a hinge.

Working with slope arrows

There is one more way that we can create slope in a roof or even in a floor slab, and that's using something called a slope arrow. So I am in a file called Slope Arrows, and slope arrows are typically used when the slope that you want to define doesn't run perpendicular to the edge. So another way to state that is when we used the Slope Defining check box in the previous movies, it was turning that edge of the sketch into a piano hinge. So if I select this roof right here and I edit the footprint, if I select one of these edges and turn on Defines Slope, it's kind of like this is a hinge.

But, I am going to turn that off. What if the slope doesn't run perpendicular to that edge? It doesn't hinge on that edge, it runs at another angle. That's really where a slope arrow can be a very handy thing. With the slope arrow, you just simply draw this arrow and the arrow has two points; it's got a low point and a high point. And you define what those points are and then the slope of the roof will follow along that arrow. So all I have to do is click the slope arrow. And in this example, I'm going to go from corner to corner here, so I am going to go from this corner of the building over to this corner of the building using my Object Snaps in both directions.

Let me zoom in just a little bit here so we can see. And with this arrow still selected, if I look over here on the Properties palette, there are two things we can specify; we can either specify the height at the tail or the slope along the arrow. So if we do the Height features, you get a low point and a high point. So in the default, it saying it's 0 here, and it's 10 feet here. So it starts at 0, slopes up to 10 feet. If you switch this to Slope, it turns off that feature.

It grays it out and then down here you would actually put in a slope in the traditional rise overrun format. So the way you define the slope is really up to you. And this one, I'm going to do the Height at Tail and I'm going to accept that default 10 feet, apply that, and I'm going to finish the roof. Let's see what we get. Now if we look at this, it's best if you orbit in 3D here. So I am going to hold my Shift key and spin the wheel and you can kind of start to see what it did. So instead of the slope matching just one of the edges of the roof, it actually runs along the diagonal of the roof.

You can kind of see that very clearly with this view here. So the low point is way down at this corner, high point up here. All right, let's look at another quick example over here. I'm going to select this one, edit the footprint. I'm going to give myself a guideline here. Sometimes, it's easier to do it that way. I want to use the midpoint right here, so you just have to make sure you erase that guideline when you're done. Let me draw a slope arrow, and this slope arrow, I only want to go half way. So I am going to snap to that midpoint, and I'm going to change the height at the arrowhead to 5 feet.

And then I'm going to keep that thing selected, go to Mirror, and I am going to mirror around this guideline that I drew, and then of course, I need to delete the guideline. If I don't delete the guideline and I try and finish, Revit will complain because I haven't got a valid sketch right now. So I have to click Continue and delete the offending line, and now I should be able to finish and watch what kind of roof I get here. Now your contractor is going to love you if you do this roof because it's going to be really difficult to frame. But you know, it's not that unusual, so you could maybe give that one a try.

And really the point is, is with a combination of slope arrows and slope defining edges, you can get all sorts of interesting shapes. In fact, that's exactly what I have right here. Now what I am going to do to show you this one is I am going to take this wall, go down to my little sunglasses here, my temporary Hide/Isolate. We looked at this in a previous movie, and I am going to hide that element. Now that gives me the Temporary Hide mode and it's just telling me, just get it out of my way, it's temporarily hidden. Let me orbit the 3D view just a little bit here, and show you how these crickets were formed.

So I am going to select this roof, edit the footprint, and you can see that it's a combination of slope defining edges. This little short segment right here, Defines Slope, and then these overlapping slope arrows where the low point here is at 0 and the high point here is just at 6 inches. So it's a very shallow slope. Now if I select the slope arrow and I kind of delete it, you'll see that there actually is a sketch line underneath. So let me undo that. Now the important thing is that sketch line underneath needs to have the Defines Slope feature turned off.

You can't put a slope arrow and a slope defining edge in the same spot. Revit will argue with you or complain about that. Now how did I create this? It was pretty simple. I'll just do it over here on the other side. I used my Split tool, and I split that wall into a couple of pieces. Then, I selected this line and I turned off Defines Slope, so that gave me the flat portion right there. And then I drew a slope arrow and it went from the endpoint to the midpoint.

So right there, and I defined how high I wanted that, 6 inches, and then I can either mirror it or just draw another one, and I'll just draw the other one from here to here. And again, make sure it goes to 6 inches like so, and let's finish the roof and you could see that I have now just defined another little cricket over here on the other side. So slope arrows are a way for you to define slopes in your roofs that would be difficult or impossible to achieve with any of the other methods.

It would theoretically be possible to use the shape editing tools that we looked at in the last movie to also model these same crickets. So I encourage you to try both techniques and see which one you like better. But, slope arrows are a really great way to do unusual shapes like the ones that I had over here, and there really wouldn't be too many other ways to define a roof like that without a slope arrow.

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This video is part of

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Revit Architecture 2013 Essential Training

96 video lessons · 12618 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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