Join Paul F. Aubin for an in-depth discussion in this video Display elements beyond with the Show Hidden Lines tools, part of Revit: Tips, Tricks, and Troubleshooting.
- [Instructor] When you're working in section elevation or detail views, there's oftentimes when you might want to show elements that are concealed behind other elements. We typically do that by dashing them in to indicate that they're off in the distance. Now we can do that directly in Revit views using a tool called Show hidden elements. So, to demonstrate that I'm going to do a few examples here but I'm going to start in an elevation view where I want to show the foundation walls down beneath the building and reveal them through the topo surface that I have right here. So if I select this topo surface and I go to the temporary hide isolate and I hide that element you can see the foundation walls here that I want to reveal through the topo.
The trouble is, in order to use the tool you need to be able to pick both elements. What you want to show elements through and then the element you want to show through. So, you can't hide the topo first, even though that would make it a little more convenient to select the walls. So I want to be able to see those walls so I can pick them. So what I'm going to do instead is I'm going to change the view temporarily to wireframe. Now that's going to make things a little bit busy on screen but it's necessary in order for us to make proper selections. So next, I'm going to go to the View tab and click the Show hidden lines tool. Now there'll be a prompt that appears it sometimes appears next to your cursor.
But if it doesn't, just look down at the status bar at the bottom of your screen. And you can see that the message down in the status bar says, first pick, it says, select the elements to show the hidden lines through. In other words, in this case that's going to be the topography. So I'm going to select the topo surface. Then it says, that the second pick is to select the elements that you want to show hidden. So that's going to be the foundation wall. So then I just repeat the process again and I'll pick this foundation wall. And that's going to take care of both of those walls there.
Now, the crop region of the view is cropping off the bottom of those foundation walls. So actually, I would like to see not only those foundation walls, but the footings down beneath them. So what I'm going to do is cancel out of that command. I'm going to show the crop region. Select it. Use this little grip right here in the middle to drag that down just enough to show the foundations down below. And then I will hide the crop region once again. Now I'll return to the Show hidden lines tool, select the topography again.
And this time I'll click the footings. And I think I have another over here that I have to click, as well. So now the problem is because we're in wireframe view it's very difficult to see the result of what we have done. So, let's change the view back to Hidden line. And now you can start to see the result. Now, it turns out that there's actually two topo surface elements here. You've got this one, and you've got this one. So notice that the element is only showing up behind the original topo surface. That's why it was important to be able to click both elements.
So I'm going to repeat the command one more time. Select this topo surface element. And then select that foundation then repeat it again on this topo surface element and that foundation. And then I'll click Modify to finish. And that completes the effect. So now we can see those foundation walls dashed in down below. So that's a really simple and common use for that tool. Let's look at another example. On my interior elevations here I have an interior elevation called Panel elevation. Now this is just a really simple interior elevation of one of the interior walls.
As you can see, there's a door on the left. And on the right, there's these two wall mounted panels. These are just really simple they're kind of like corkboards or they might be whiteboards, or something like that. They're kind of mounted there on the wall. And what you'll notice is is that there's a slight overlap. So notice that this one here is slightly behind that one there. So, I'm going to zoom in so that we can see that very clearly. So there's the one behind. And what I want to do is use that same tool to kind of dash in the edge of the overlap there.
So I'll use my Show hidden lines tool. Again, the first pick is the element that you want to see through. So that's going to be this panel. And the second click is the element that you want to dash in behind it. It'll be that one. I'll click Modify to finish the command. Now, the reason that I wanted to show you this example is, this is a live feature now. So these two elements now have that relationship where you're saying the one in front is always going to be in front of the one behind, and it's going to dash in. So what I mean by that is if I were to select this panel and move it notice that the dashed line continues to display dashed all the way around.
So that's kind of a nice feature, that not only is it this sort of nice effect but it's going to stay active as long as you need it to be active. So if at any point you decided that you no longer wanted that feature to take place you can use the opposite command here Remove hidden lines. And this would allow you to just select the two elements that were currently participating in the hidden line feature. And it will just remove that effect. So let's look at one last example. Okay, this is going to be a detailing example. So I have a detail view down here called Eave detail. This is a detail element for the roof rafter.
And then there's another detail element here for the ceiling joists. And what I'd like to do is show the ceiling joists dashed in behind the roof rafter. So one more time I go to Show hidden lines. I select the element that I want in front. I select the element I want in back. And then as you can see it will dash that in. And once again, if this roof rafter were to move it will continue to apply that effect. So show and remove hidden line tools allow you to customize the way the objects behave relative to one another.
It's a focused feature that applies just to the two elements you select. So you have a great deal of control over exactly which element is in front, which one is in back. And then it'll stay active as long as you leave that feature turned on for those two elements.
NOTE: The exercise files for this course can only be opened in the most recent version of Revit (Revit 2017).
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