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Sometimes your project will be comprised of more than one Revit file. There's a variety of reasons why you might do this, but different members of the team might be working in different building files or perhaps they are working under different disciplines like structural and mechanical. Whatever the reason might be, we can link two Revit files to one another so that if changes occur to one of the Revit files we can reload and see those changes in the file that it's linked into. So I'm in a file here called Office Building and it's just a simple office building structure. I'm just going to link in a small outbuilding.
I do this by going to be Insert tab and I'm going to click on the Link Revit button. Now this will bring up the familiar browse window and I can choose any of the files that I have in here, and I want to pick this file called Shed, just a small shed building that we're going to bring in here. And if you followed along in the movies on linking CAD files you'll see that this dialog is much simpler. It doesn't have all of the settings down here at the bottom that the Link CAD file had, and the reason for that is we're linking Revit to Revit now.
Revit is familiar with how to interpret the geometry in another Revit file. So it doesn't need to ask us a lot of questions about how it should do that. The only real question it needs to know is, where do we want to put it? Now we've got a lot of the same options. We can put it Center to Center, Origin to Origin, or we can bring it in manually. Usually, what you want to do is just accept the default Center to Center, click Open and see where it comes in, and then you can just simply move the file to the correct position. So naturally we don't want our shed to be sitting right on top of our building.
So maybe it's out over here somewhere off to the side on the site. So I'm just simply going to select it. And then here on the Modify ribbon I'll click the Move tool, and I'll just pick a base point and I'll move it over here. Now I'm doing that a little bit imprecisely right now, but of course I could type in exact coordinates and we discussed that in some of the previous movies. So I'll leave that to you if you want to move it by an exact amount. Now at this point, if I go to my 3D view, I'm going to click on my default 3D view icon here, the little birdhouse icon, you'll see that I've got my two buildings seated next to one another.
Now over on the Project Browser if I scroll down at the bottom, Revit links actually appear right here on the Project Browser. So if I expand that out you'll see that the shed building is shown right here. It's got a small blue arrow next to it. That blue arrow is telling me that it's currently loaded and of course we can see that on screen, because we can actually see the building. If I wanted to open the shed and do some work on it, there is a limitation with linked Revit files where you can't have both your host building, office building in this case, and your nested link file, your shed in this case, you can't have both of them open at the same time in the same session of Revit.
They can be opened in two different Revits. So if we have two users working on separate computers, each one can be working on a different building, but you can't have both buildings open on the same person's computer at the same time. So if I wanted to open up shed, and I click on it, that will generate an error message. It'll say sorry you can't do that, because it's currently loaded. Do you want to unload the link? Now if I say yes here it'll actually remove that link right there and it's going to warn me that I can't undo that and I'll say that's fine.
It opens up the shed and what we'll see here if we switch windows back to the office building, first of all you see the shed is missing and if I scroll down you can see a big red X next to it. So it's showing me that the shed has now been unloaded. It didn't remove it, it didn't delete it, but it's just not currently loaded. Now I'm going to switch over here the shed and I'm just going to make some change. So it's got two windows on this side and it's got this little entry patio over here, maybe I'll select one of these windows and copy it and add an extra window, select the door here, maybe I want something a little larger.
When I open up the list, I only have the default door in here so that just simply means I need to go to the Architecture tab, click on the Door tool, load a family, we've done this in a previous movie, and I'll just bring in a double flush door like so. Instead of actually placing the door I'll press Escape and I'll select this existing door and now you can see that I have the double door available there and I'll just choose the size. So we've made those two changes. Both should be pretty noticeable when we reload this file back into the other project.
I'm going to go to the R here, go down to Close. It's going to ask me if I want to save the changes to the shed, I'm going to say Yes, and then back here in order to see those changes, I have to reload the shed file. I can do that by right-clicking right here, choose the Reload button, and you'll see the shed appear, and when I zoom in, it now has three windows on this side and a double door. So that's basically the value of setting up a linked file in Revit.
One person can be working in the shed file making their changes, another person can be working in the office building making their changes, and every so often each of these users can update their link file and see any of the changes that their colleague has made.
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