Creating Detail Groups in Revit for Rebar Placement and Coordination

Creating and Editing Detail Groups for Rebar Placement in Revit

Explore the use of a tool called Detail Groups, which contains a named collection of detail elements and view-specific elements, with the advantage that when edited, all instances throughout a project are simultaneously updated. This article guides through the process of drafting in rebar at the edge of a slab, creating elements, and finally generating the Detail Group.

Key Insights

  • The Detail Group tool allows for the creation of a named collection of detail elements that are view-specific. Once a Detail Group is edited, all instances of it throughout a project will be updated simultaneously.
  • The article provides a step-by-step guide to drafting rebar at the edge of a slab. This involves creating filled regions with specified dimensions, drawing detail lines with offsets, and using other tools like fillet arc, pick lines, and hidden lines.
  • After creating the rebar, the next step involves selecting all created lines and filled regions to create a group named 'rebar at slab edge'. This detail group can be edited, copied to clipboard, and pasted onto other wall sections in the project, with all instances updating simultaneously when changes are made.

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In this video, we're going to look at a tool called Detail Groups. A Detail Group contains a named collection of detail elements, and basically view-specific elements. Similar to a Model Group, if the Detail Group is edited, all instances of it throughout the project will update.

So let's go to our Section Detail Windowsill view, and I'm going to just go ahead and close my hidden windows. And what we're going to do is we're going to draft in the rebar at the edge of our slab here. So let's first go ahead and draft the elements, and then in the end, we'll create the Detail Group.

So the first thing we're going to make is the rebar going towards us. Let's draw a filled region, and go to the type Solid Black. And we're going to select the Circle tool under Draw, and we're going to draw three three-quarter inch diameter circles to represent the rebar.

So let's just, I'm just going to kind of make one off into space here, and then so the radius is going to be three-eighths of an inch. And I'm going to move this guy starting from a reference point at the top right corner. So let's move it down four inches below the top of slab, and then we'll move it to the left six inches away from the slab edge.

Okay, and then the next step is we're going to copy this, and let's copy one instance down 10 inches, and then select the original circle again. And then let's go ahead and copy that one over 16 inches. Okay, and if we hit the checkbox, we'll finish our filled region, and you can see we have three black circles.

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Next, we're going to create the rebar that's going the opposite direction, and we're going to use hidden lines as the type. So let's go to Annotation, and we're going to use Detail Lines, and the type of detail or the line style will be Hidden Lines. We'll select Hidden, and we're going to leave a gap of one-half inch between the circles that we just drew.

So let's go ahead and set an offset to half of an inch. I'm just going to start here at the bottom, hit my spacebar to flip the side that it draws it from, and I'm going to hit escape here, and then start a new one on the top here. Just kind of draw it all the way to the outside of the crop region.

And let's go back to Detail Line, and what we could do is draw a fillet arc. And so let's just click one line, and then you can click a line that's perpendicular to it. And if I zoom in here, you'll get a better idea.

You can see it's going to add an arc that spans between the two, and set that radius to one inch. And then we know these are three quarter inch pieces of rebar, so let's go ahead and draw more hidden lines, but then this time we're going to use pick lines as the way to create these lines. And then we'll set the offset to three quarters of an inch.

We'll highlight the lines we just drew, and then offset them three quarters of an inch. And then lastly, I'm going to set this back to zero. We're just going to end our rebar, and you just pull it down a little bit past the bottom bar.

So those are the lines and filled regions representing our rebar. So the next step is to create our detail group. So let's select all the lines.

So I just hovered over it, and hit TAB, and it selected all of them. And then holding down control, let's select our filled region representing the rebar. And then now, in the ribbon, we have the option to create a group.

And let's name this group rebar at slab edge, and hit okay. And with the detail group still selected, what we're going to do is we're going to edit the group. Now you see we have the option to edit the group with that detail group selected.

If you click that, we go back into our edit mode. And what I'm going to do is just add a detail line at the edge of the slab. And this is going to help us when we add this detail group to the other wall sections in our project.

Now let's select our detail group, and then we can simply use control C to copy. Now we're copying it to the clipboard. You can also use this command up here if you'd like.

Copy to clipboard. And let's go to our typical wall sections. And since this particular view is the parent view of our detail, if I just go to modify, clipboard, paste, align to current view, it drops it right in the identical space.

But if I go to section two, I can't copy it, align to view because it's not in the same plane. So I'll just go ahead and paste, control V. And you can see this is our detail group. And we drew that reference line on the end to help us move this detail group and align it properly.

So I'm just going to use the edge of the slab as a reference. And then I'll repeat the same steps in typical wall section three. So control V to paste it.

And then I'll just go ahead and move this using the slab edge again as our reference. But you can see that in our wall sections, we didn't quite draw our rebar long enough. And we really should probably continue this all the way to outside of the crop region.

So what we can do is select our detail group, edit the group again, and then simply drag our lines all the way to the outside. And then I'm going to add another piece of rebar here. It's every 16 inches on center.

Actually another two to go ahead and fill that portion of our wall section. Hit the checkbox to finish. Now, if you go back to our other wall sections, you'll notice those detail groups updated along with the one that we just edited.

Now all of our detail groups match. In the next video, we're going to look at a tool called insulation.

Gavin Grant

Revit Detailing Instructor

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