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We don't necessarily have to model our roofs without the aid of

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some other geometric shape.

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No, we can actually model any crazy shape we want within reason, and

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simply glue our roof to the top of that shape.

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By creating an in-place mass,

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we can literally adhere our roof to any weird shape we want.

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The objective of this video is to start a new model.

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We're going to make a grid, then we're going to create and in-place mass.

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Once that's in place, we're going to actually put a roof right

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on top of it by using the roof by face command.

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So to get started, let's go into Revit.

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Under projects, let's just click on architectural template.

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In level one, let's go to our architecture tab, let's click on the grid button.

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I'm going to draw a grid right about here, and I'm going to hit escape.

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This is grid line one.

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I'm going to select grid line one, and I'm going to click the copy button.

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I'm going to turn constrain on and also multiple.

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I'm going to select my grid line, and I'm going to copy it down 25 feet.

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I'm going to keep going to 25 feet, and I'm going to hit escape.

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One, two, three, and four.

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Now I'm going to draw another reference plane up the middle.

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On my data panel, I'm going to click my grid button.

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I'm going to draw a grid right up the middle.

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I'm going to call this A.

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Now what I'm going to do is I'm going to go to my west elevation.

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I'm going to right-click on level two and I'm going to create similar.

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On my draw panel, I'm going to click on pick lines,

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and I'm going to offset ten feet.

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I'm going to hit escape a couple times.

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I'm going to select grid line A and drag it up a little bit.

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I'm going to right-click on grid line A and create similar.

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I'm going to use my Pick Lines button, and I'm going to offset it 40 feet.

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I'm going to offset it once to the left and once to the right.

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I realize my numbering is off.

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I'm not too worried about it.

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Now the next thing I'm going to do is I'm going to click on the 3D button.

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I'm going to type WT and I'm going to close out of floor plan level one.

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I'm going to type WT again, but my views are open.

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You'll see why I do this in a second.

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Now what I want to do, is I want to go to the Massing & Site tab.

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I want to click In Place Mass, close the Massing dialogue,

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and for name, we'll call it Roof, and we'll hit okay.

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Now, what I want to do is, on the Draw panel, go ahead and click on model.

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Revit wants us to pick a plane.

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Click the dropdown, and let's go grid one.

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Let's click okay.

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I'm going to zoom into comm line B, i'm going to come down five feet.

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I'm gonnapick a point.

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I'm going to come straight down, straight over, up the five feet.

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Now on my Draw panel, I'm going to go Start End Radius Arc.

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I'm going to pick an endpoint here, and I'm going to bring it right up to this.

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I'm going to hit Escape.

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Now type ZA.

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Now in this view, we can see what we're doing.

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Click interior elevation.

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On the work plane panel, click the set button.

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Let's set it to grid two.

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Let's hit okay.

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Now I'm going to go again and with some lines.

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I'm going to click the Model Line.

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This time I'm going all the way up to level two.

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Straight down, over, up.

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I'm going to click the Arc button.

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Click the endpoint, drawn art, and hit escape.

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Click into your elevation, click the set button.

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Let's go to grid three.

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Let's click okay.

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On the draw panel click the model line button.

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This time, let's use our Pick Lines button.

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I'm going to hover over the smaller one, hit my Tab key once, and select it.

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Hit escape a couple times.

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Let's repeat the procedure on the bigger one for the last one.

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So I'm going to set my work plane to grid line four.

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I'm going to hit okay.

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I'm going to choose model.

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I'm going to click pick lines,

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hover over my larger arc, hit tab, and select it.

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I'm going to hit escape a couple times.

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We've got it.

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Now I'm going to maximize my 3D view by double-clicking on the 3D view bar.

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Hold down the control key and select each of these items that you created.

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Click Create Form on the form panel, and

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Revit will create a form extruded along those items.

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We're all set now, so click Finish Mass.

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Now let's go back to massing in site.

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Let's click on roof.

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Let's go to our properties.

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Let's grab generic nine inch.

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Now I just go ahead and select that mass surface and click create roof.

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Hit escape a couple times.

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That's how you can create a free-form roof based on a massing object.

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So, there aren't too many more shapes I can think of that we

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can't slap a roof on top of.

