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Roof modifications and examples

From: Revit Architecture 2011 Essential Training

Video: Roof modifications and examples

As you sketch elements like roofs and floors, the geometry you create will often maintain associative relationships to the surrounding geometry. For example, if you use the Pick Walls option to create your sketch lines, the shape of your roof or floor will change automatically if the walls move. This is only one example. There are other modifications that we can employ to create intelligent relationships among the various parts from our model. In this movie we'll highlight some of those topics, and we'll also explore a few other miscellaneous roof-making techniques. Some of these we've already seen, so it's more like a summary. We have a gable roof here. We have a hip roof.

Roof modifications and examples

As you sketch elements like roofs and floors, the geometry you create will often maintain associative relationships to the surrounding geometry. For example, if you use the Pick Walls option to create your sketch lines, the shape of your roof or floor will change automatically if the walls move. This is only one example. There are other modifications that we can employ to create intelligent relationships among the various parts from our model. In this movie we'll highlight some of those topics, and we'll also explore a few other miscellaneous roof-making techniques. Some of these we've already seen, so it's more like a summary. We have a gable roof here. We have a hip roof.

These are both done with footprint roofs. So is this shed roof over here is also a footprint roof. Let's do something with the shed roof here at the end though, to make it match what's going on here and here with these two roofs here. Notice that the walls are actually following the shape of that gable roof, but here in the shed, they clearly are not. This is exactly a pretty easy change to make. I'm going to highlight one of the walls, press my Tab key to Chain select all four walls. Now remember, it's been a while since we've done Chain select, if you've been following the movies in order.

So don't move your mouse away, because if you do, you haven't selected anything. You've got to pre-highlight one wall, Tab, then click to get all four walls. Now they're actually selected. Then over here on the Ribbon, you can choose Attach Top/Base. When we click that tool, it will prompt us to select something in the model. And I'll just go ahead and select the roof, and you'll see the walls jump up and attach themselves to the roof. Now what's important about that is we talked about these relationships being associative and maintained.

So this roof was drawn with the Pick Walls option, like the roofs we did in the previous couple of movies. If I were to move this wall, you'll notice that the shape of that roof moves along with it. Furthermore, if I were to take this roof and actually scroll down here and adjust its slope, so instead of a 3'/12'' maybe I make it a 5'/12'' and go ahead and click Apply, you'll notice that that new attachment we just made of the walls stays maintained as well.

So there's sort of this circular relationship between the walls driving the shape of the roof and the roof driving the height of the walls. So those two work together. Now let's direct our attention over here to these two flat roofs. A flat roof is also generated by a footprint roof. So we draw the footprint roof and to make it a flat roof, we simply make none of the sketch lines slope-defining. So I'm going to select this roof, choose Edit Footprint. You can see the four sketch lines.

And if you were to click on any of them, none of them have Defines Slope. You tell that just by looking, because none of them have that little triangle symbol. So in order to create a flat roof, that's all you have to do is you sketch your footprint, and you just make none of the edges slope-defining. But I've taken this roof and taken it a step further. Notice when I pre-highlight it, it's got those four red, little, squared handles at the corners. These are little shape handles that are associated with flat roofs. You won't get those if you pre- highlight a roof that has slope-defining edges.

So if you look at the roofs that actually have slope-defining edges, when you pre-highlight them, they don't show any of those little squares at the corners, and furthermore, if you select them, the only tool that you'll see here is Edit Footprint. Contrast that to this one: If you select it in addition to Edit Footprint, you see this panel here where you have all the shape editing tools. So what shape editing tools allow you to do is do things like add points, for example. I'm going to add a point in this roof and change the elevation to - I am going to do something very dramatic, to maybe 4 feet and click it right there.

When I click the Modify tool, you'll see that that basically turned this roof into a pyramid. So when I started this file, I did something much more subtle. And when I click on that roof, you've got this tool is how you can get in there and actually modify these points after the fact. So the Modify Sub Elements. If I click on one of those little squares, as you can see that one set at 4'' and this one set at 0''. So there's a very subtle, little drainage slope going on in this roof. Now, if you want you 4 feet and the pyramid shape, you can certainly do that.

So by actually adding these points, you can sculpt a pretty dramatic roof. Now what I'm going to do is actually undo the placement of that point, and I'm going to go to a section view, because I want to show you one more thing about this modification that I made. So remember, at this side of the roof - let me just show you Modify Sub Elements again - the point is that 4'', and at this side of the roof it's only at 0''. But furthermore, what we've done here - let me zoom in even closer - is you'll notice that the insulation component that's used on the roof here is actually thicker on this side than it is over here on this side.

So I'm going to select this roof. You'll notice that instead of using the Generic-12'' roof that we've been using in other movies this one is actually a more complicated roof that has Metal Deck and EPDM. And I'm going to edit its type. Now, when I edit its type, I can then edit the structure. And if you recall the movies on creating walls, we looked at a similar dialog to this when we were looking at the wall structure. Like walls, the roof has a core with a structural component, in this case Metal Deck, and then it has some Insulation, and then a Finish material, the EPDM.

The Insulation component has a check box right here which makes it Variable. I want to summarize all that parts and pieces here, because there is a lot of moving parts to make this work. To do this technique that I'm showing here, you need three things. You need to create a footprint roof with no Slope Defining edges. Next, you need to go into the shape editing tools and add points at different Z heights. In my case, I did 0 and 4 inches. It doesn't matter how much; you've just got to have different heights. Then finally, you need to edit the structure of the roof assembly and make one of the components variable.

Typically, that's going to be your rigid Insulation, because you'd want to keep your structure flat like I have here, and have the installation taper to allow for drainage. So, if that's the kind of roof structure that you need, those of the tools that you have that you can use to accommodate that.

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This video is part of

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Revit Architecture 2011 Essential Training

81 video lessons · 12572 viewers

Paul F. Aubin
Author

 
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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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