Working with reinforcement tools -Part 5

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After completing this lesson, you'll be able to understand rebar constraints and understand reinforcement couplers.

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The objective domains covered are 1.1h work with reinforcement tools.

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When formwork or rebar is edited, it's important that other rebars are repositioned correctly.

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These relationships are maintained with rebar constraints.

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Rebar constraints can constrain a rebar to a concrete element, the elements cover or other rebars.

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Rebar couplers can connect rebars and automatically apply end treatments and lengths to comply with bar engagements.

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The couplers can be applied to individual bars or rebar sets.

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Rebar couplers can also be applied to one end of a rebar for anchor heads.

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Rebar couplers can appear in schedules and can be tagged.

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Go ahead and open up the model 017-Work with Reinforcement Tools.

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The model opens in a 3D view.

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We'll begin by zooming up on this second column detail here.

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And what we're gonna look at first is applying rebar constraints.

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For example, you can see here that we have an L bar and the main reinforcement bar of our column.

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If I select this main reinforcement bar here and I change the bar type to perhaps a number 11 bar, you'll notice that the L bar doesn't move.

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And in fact, now there's a clash between the two reinforcement bars.

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To stop this clash happening and to make the bars update intelligently, I need to add a rebar constraint between the two reinforcement bars.

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To do this, I'm going to select the L bar.

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And on the context ribbon, I'm going to select Edit Constraints.

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Now, in a 3D view, I first select the L bar, and you can now see I have the plane that I want to constrain to.

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And I could ether select a cover here or another reinforcement bar.

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So, in this case, I'm going to go ahead and pick my main bar here.

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And, you'll now notice that I have the distance of clear spacing between the two reinforcement bars.

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Now, I can't toggle that, so I can go from bar center to the tangent faces of the rebar.

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Here, if I want to give a gap, I can do that.

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So, for example, if I wanted a 1-inch gap in between the two bars, I could type in "1 Inch" and you can now see the bar moves.

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Of course, if I want to go the other way, I can type in "-1 Inch" and the bar travels in the opposite direction.

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Here, we'll set this to 0.

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On the context ribbon, I can now click "Finish".

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And now if I select my main reinforcement bar and I changed my bar type back to bar number 11, you can now see the L bar responds to that change.

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So, now we can guarantee that the reinforcement would update intelligently.

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Next, we had some rebar couplers to the other column.

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So, here, you'll notice that we have some gaps ready to insert some reinforcement couplers.

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The first thing you might notice here is the gap isn't consistent.

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You can see there are different gaps between all the reinforcement bars.

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This doesn't matter. The actual length of the reinforcement bar will update when the coupler is applied.

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So, let's go ahead now and add a coupler.

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On the Structure ribbon, click Rebar Coupler.

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On the context ribbon, you'll note there were two options.

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We can place a coupler to the end of a bar. This will be useful for an anchor.

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Or we can place couplers between two bars.

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In the Properties palette, in the type selector, we can then choose the type of coupler we want to apply.

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Notice here we have our anchor couplers up the top.

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We also have our standard couplers here, or we have transition couplers between different types of bar.

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So, then we can go ahead and place our coupler.

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We can then continue to place those couplers out.

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And we'll put the final coupler in.

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Once the couplers are created,

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you'll now notice that the distance between the two bars is precisely controlled by an engagement inside the coupler family.

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For example, if I select one of these couplers here and I select Edit Type,

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you'll notice in the Type Properties that we have things like External Diameter, but here we have the Bar Engagement.

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And this automatically lengthens or shortens the reinforcement bar to match that engagement.