Working with reinforcement tools - Part 1

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In this module,

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you learn the fundamental principles of reinforcement

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placement as well as reinforcement cover.

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You don't complete a practical exercise where you add reinforcement to a column.

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The exam objectives covered are 1.1 h work with reinforcement tools.

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Reinforcement is required to improve the strength

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of concrete in building and civil structures.

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Concrete is very good at resisting compressive

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forces but weak when resisting tensile forces

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to improve the strength reinforcement bar is used in most structured elements.

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Bret

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has many tools to efficiently add reinforcement

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to a variety of different concrete elements

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as rebars are placed in the model rev it assigns a

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rebar number which is based on the geometry of the rebar.

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The starting number and format are controlled within the rebar settings. Dialogue

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in the table on the left,

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you can see the bar mark starts from 00 for each drawing and bending schedule.

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This is one method of controlling bar marks.

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All concrete elements require a minimum cover to prevent corrosion

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of the rebar and protect the rebars from fire.

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The reinforcement cover can be set independently for

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each face or globally for the entire element.

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The reinforcement covers can be set and

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stored in the reinforcement cover settings,

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dialogue,

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go ahead and open up the model 013 work with reinforcement tools.

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The model opens up in the 03 3rd floor column detail.

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In this example, we're going to open up two views and tile them together

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in the project browser.

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Go ahead and open up the 03 3rd floor column detail.

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We'll now tile the two views together. So to do this, we'll use a keyboard

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shortcut.

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So we'll type in WT and you can now see the two views are tiled.

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We'd also want to zoom all the views.

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So again, we'll use another keyboard shortcut Z A.

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Before we add reinforcement to the column,

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we'll take a look at the cover settings and how we apply cover to the elements

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to do this. We'll select the structure tab

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and in the reinforcement panel, you'll note that we can select cover

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on the options bar. You'll notice here that we have two options to place cover.

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We can do it for the entire element or we can select

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an individual face and then apply cover to those selected faces.

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If we take our cursor into the plan view,

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we will clearly see a green dotted line

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which is representing the current rebar cover.

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Let's select the column.

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And again, on the options bar,

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you can see that we can select various different covers from a set list.

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Currently, you'll notice the cover is set to 1.5 inches.

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If we wanted to create new cover settings,

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we could select the button to the right of the drop down menu.

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And now you can see in the rebar cover settings, dialogue,

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we can either duplicate existing settings and amend

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those or we can add new settings here.

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Let's go ahead and select OK to the rebar cover setting dialogue.

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We'll now add some rebar to our column.

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So again, on the structure tab in the reinforcement panel, let's select rebar

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on the modify rebar tab, you'll notice in the placement methods, panel,

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we have various different ways of placing out reinforcement.

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The default, which is what we're going to use here is expand to host.

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However, if we didn't want that behavior,

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we could actually define the reinforcement by picking two points,

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we can also select free form rebar for more complex operations.

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Or finally, we can sketch the shape of reinforcement that we want.

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You can see the placement plane can also be selected.

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The default in this case is current work plane,

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which is what we're actually going to use.

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But for example, if we were placing reinforcement into a wall,

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we might want to place it on the near face of the wall or the far face of the wall.

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So you can see we can select those various different options that we might want.

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Also, if we take a look at the placement orientation.

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In this case, we want to place the rebar parallel to the work plane.

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However, we might want that to be parallel to cover or perpendicular to the cover.

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You'll also notice now that we have the

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rebar shape browser visible in the interface.

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This allows us to select our reinforcement shape

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from the loaded rebars in our current project.

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In this example, here, we're going to make sure that we've selected shape code T one.

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If the rebar shaped browser is closed down,

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we can start up the rebar shape browser again by going

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into the options bar and selecting launch close rebar shaped browser

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in the properties pallet in a type selector.

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You'll notice here that we're using rebar number three.

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If we wanted to choose the new bar diameter,

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we could go to the drop down here and we

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could select the rebar diameter that we want to use.

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In this case, we are going to use the rebar type number three.

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Let's now take our cursor into the plan view and you can

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clearly see now we have our shape previewed within the model.

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Notice that the hooks are displayed in the top right hand corner of the column.

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If we want to cycle these,

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we can press the space bar and you'll now notice the hook

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is cycling to each of the four corners of the rebar shape.

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We'll position the hooks in the top right hand

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corner and left click to place out the rebar

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will then exit the command by selecting, modify on the modify rebar tab,

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looking into the 3D view.

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If we zoom up on the link that we've just placed,

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we can clearly see that we have a clash here.

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So I'm going to select the reinforcement shape.

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And in the properties palettes, you'll notice the current shape is T one.

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Let's go ahead and select T two

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and we can now see the clash has been resolved.

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Also notice in the 3D view that the rebar is shown as a solid.

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If we want to control this,

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we can go down to the view control bar and we can

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simply change the detail level from fine to either medium or coarse.

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And here you'll now notice that all the rebars are showing wire frame.

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Let's go back and change this to a fine level

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of detail to see all the rebars represented as solids.

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Of course, in this example, we're going to want more than one reinforcement bar.

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So we'll select the shape that we've just placed out

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and looking up onto the modify rebar tab.

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In the rebar set panel,

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you can see that the layout rule is currently a single reinforcement bar.

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Let's now amend this to maximum spacing.

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You'll now notice that the rebars are distributed up the column and the rebars are

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constrained to the star and end cover that we've just applied to our column.

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Let's now look at some of the other layout rules.

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So currently we're using maximum spacing.

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However,

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we could use the spinner buttons here to increase or

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decrease the number of reinforcement bars within the column.

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Another layout rule is to use number with spacing and here we have account.

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So in this case, we have 32 links and then we can define our spacing below.

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In this case, we'll go back to maximum spacing

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and we'll set our maximum spacing of four inches.

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OK. So there are our stirrups placed out.

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Go ahead and save the model.