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Create a rebar set

Last updated March 6, 2017 by Tekla User Assistance tekla.documentation@trimble.com

Software version: 
2017

Create a rebar set

Create a rebar set

Rebar sets are reinforcing bars that you can modify by using direct modificationfunction that activates the mode where the model objects can be modified by using handles

Direct modification enables additional handles and modification options.

and the rebar set guidelines, leg faces, and local modifiers. You can create rebar sets when you want to flexibly reinforce various areas in concrete parts or pour objects.

You have several options for creating rebar sets: longitudinal bars, crossing bars, planar bars, and bars by point input. Longitudinal, crossing, and planar rebar sets are attached and adaptive to a concrete part or pour objectbuilding object that is formed of one or more cast-in-place concrete parts, or a part of a cast-in-place concrete part

The cast-in-place concrete parts are merged into one pour object if they have the same material grade and pour phase, and if they touch each other. Pour objects are visible in pour view.

. Using the Create rebars by point input command you can create rebar sets even outside concrete objects.

Note:

When you work with rebar sets, ensure that theDirect modification switch is active.

Basic concepts related to rebar sets

The leg faces of a rebar set are planes that define where the reinforcing barreinforcement that represents a steel bar used to reinforce a concrete structure

The steel bars are usually ribbed and they are used to increase the tensile strength of concrete.

legs are created. Tekla Structures creates leg faces at the reinforced faces of concrete parts or pour objects, or according to the points you pick when you create rebar sets.

Each rebar set has a guidelinedefinition of the distribution and direction of the reinforcing bars in rebar sets

The spacing of the reinforcing bars is measured along the rebar set guideline. The rebar set guideline can be a line, or a polyline that may have corner chamfers.

that defines the distribution direction of the bars. The spacing of the bars is also measured along the guideline. The guideline can be a line, or a polyline that may have corner chamfers.

In the example below, the leg faces are shown in gray, and the guideline is highlighted in yellow:

The position of the guideline affects the bar creation. If you move or lift an end of the guideline, the bars turn respectively. For example:

If needed, you can create a secondary guidelinerebar set guideline that can be used in addition to the rebar set primary guideline to modify the geometry, direction, and spacing of reinforcing bars in a rebar set

Rebar set secondary guidelines can be used to create curved reinforcing bars or to define a different spacing at the start and end of the rebar set reinforcing bars, for example.

, and use it to define a different spacing at the start and end of the rebar set bars.

If you need to modify a rebar set only at certain locations, you can create local property modifiers , end detail modifiers , and splitters.

Create longitudinal rebars

You can create a rebar set that consists of longitudinal reinforcing bars in a concrete part or pour object.

  1. If you want to reinforce pour objects, switch to the pour view.
  2. On the Concrete tab, click Rebar set > Create longitudinal rebars.
  3. Move the mouse pointer over the edges of a concrete part or pour object.

    Tekla Structures highlights the cross sections that you can select.

  4. Select the cross sectiongeometrical form of a part sectioned perpendicular to its axis

    that you want to reinforce.

  5. If needed, modify the cross section size or shape for the bars.

    To do this, clickon the contextual toolbarfloating toolbar that contains commands for modifying the most common object properties

    The user can customize the contextual toolbar.

    The term mini toolbar is used in Tekla Structures until version 21.1.

    , and then drag the cross section handles.

  6. In the selected cross section, select the faces that you want to reinforce.

    By default, only one of the faces is selected. To select multiple faces, hold down Shift or Ctrl.

    Tekla Structures highlights the selected faces in yellow.

  7. To extend or shorten individual faces, clickon the contextual toolbar. Then drag the yellow and magenta end handles.
  8. To finish, click the middle mouse button, or clickCreate the rebar set on the contextual toolbar.
Tekla Structures creates a rebar set at each selected face, and the bars perpendicular to the selected cross section.

Create crossing rebars

You can create a rebar set that consists of crossing reinforcing bars in a concrete part or pour object.

  1. If you want to reinforce pour objects, switch to the pour view.
  2. On the Concrete tab, click Rebar set > Create crossing rebars.
  3. Move the mouse pointer over the edges of a concrete part or pour object.

    Tekla Structures highlights the cross sections that you can select.

  4. Select the cross section that you want to reinforce.

  5. If needed, modify the shape of the bars.
    • To extend or shorten individual legs, clickon the contextual toolbar. Then drag the bar end handles.

      This way you can also create overlapping bar shapes, or extend bar ends outside the concrete object.

    • To change the cross section size for the bars, clickon the contextual toolbar. Then drag the cross section handles.

  6. In the selected cross section, select the bar legs that you want to create.

    By default, all legs are selected and Tekla Structures creates a leg for each object face.

    • To unselect a selected leg, hold down Ctrl and click the leg.
    • To unselect all legs, clickon the contextual toolbar.
    • To select more than one leg, select the first leg, and then hold down Ctrl or Shift when selecting the rest of the legs.
    • To select all legs, clickon the contextual toolbar.

    Tekla Structures highlights the selected legs in yellow, and creates a continuous bar shape of the legs.

  7. If you want to rotate the bar shape, for example, to move stirrup hooks to another corner, press Tab for counterclockwise or Shift+Tab for clockwise direction.
  8. To finish, click the middle mouse button, or clickCreate the rebar set on the contextual toolbar.
Tekla Structures creates the bars parallel to the selected cross section, and distributes the bars along the concrete part or pour object.

Create planar rebars

You can create a rebar set that consists of planar reinforcing bars in a concrete part or pour object.

  1. If you want to reinforce pour objects, switch to the pour view.
  2. On the Concrete tab, click Rebar set > Create planar rebars.
  3. Define the faces and areas of a concrete object you want to reinforce, and the direction of the bars using the following options on the contextual toolbar:
    Click this button To do this
    Create bars at the near face of the concrete object.
    Create bars at the far face of the concrete object.
    Create bars parallel to the longest object face edge.
    Create bars perpendicular to the longest object face edge.
    Create bars in two directions: one set of bars parallel to the longest object face edge, and the other set of bars perpendicular to it.
    Create bars for an entire object face.
    Create bars for a rectangular area on an object face.
    Create bars for a polygonal area on an object face.
  4. Depending on the area you selected to reinforce, do one of the following:
    • To reinforce an entire object face:
      1. Move the mouse pointer over the faces of a concrete part or pour object.

        Tekla Structures shows the object face dimensions, and a symbol that indicates the direction of the bars.

      2. Select the object face.
    • To reinforce a rectangular area, pick two opposite corners of the area.

    • To reinforce a polygonal area, pick the polygon corners.

Tekla Structures creates the bars according to the options you selected. If you selected to create bars in two directions, Tekla Structures creates two rebar sets: one with bars parallel to the longest object face edge, and one with bars perpendicular to it.

Create rebars by point input

You can create a set of reinforcing bars so that you define the shape of the bars by picking points in the model.

  1. On the Concrete tab, click Rebar set > Create rebars by point input.
  2. On the contextual toolbar, select an option to define the rebar set type and the number of cross sections in the rebar set.

    The options are:

    • Normal
    • Tapered
    • Tapered ridge
    • Tapered curved
    • Tapered N

    If you select the Tapered N option, enter the number of cross sections.

  3. Pick points to define the shape of the bar at the first cross section.

    You can use different snapping methods, such as Ortho and temporary reference points.

  4. Click the middle mouse button to finish picking.
  5. For the second and subsequent cross sections, pick points to define the shape of the bar, and then click the middle mouse button to finish picking at each cross section.
Tekla Structures creates a rebar set with leg faces between each cross section.

Rebar set properties

Use the contextual toolbar or the property panecontrol element in Tekla Structures user interface in the form of a side pane window

The property pane can be used to show and modify the properties of model objects.

to view and modify the properties of rebar sets. The file name extension of the properties file is .rst.

Limitations

  • Roundings in bent bar corners are not taken into account in automatic clash avoidance when Tekla Structures creates rebar sets and arranges them to layers.
  • You cannot create rebar sets in deformed parts.
  • You cannot create crossing bars in polybeams or variable cross sections if the angle between neighboring segment faces is larger than 45 degrees.
  • Tapered bar groups within rebar sets do not have position numbers, so position information is not included in reinforcement marks in drawings.

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