1. Hem
  2. Tekla Structures
  3. Create models
  4. Create parts, reinforcement, and construction objects
  5. Modify reinforcement
  6. Modify a rebar set
  7. Modify a rebar set locally using modifiers

Modify a rebar set locally using modifiers

Tekla Structures
2022
Tekla Structures

Modify a rebar set locally using modifiers

You can use modifiers to modify a rebar set at certain locations only.

For example, you can create a local property modifier to only change the properties of certain bars in a rebar set, or you can create hooks or threading by adding an end detail modifier, or you can split rebar set bars with a splitter.

You can also create secondary guidelines for the rebar set. With a secondary guideline you can define a different spacing at the start and end of the rebar set bars, for example.

Modifiers are lines, or polylines that may have corner chamfers. Modifiers are projected to rebar set leg faces. Each modifier then only affects the rebar set bars that its projection touches.

Note:

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

To select entire rebar sets, or bar groups or individual bars within rebar sets in the model, you can use the three reinforcement selection switches . Tekla Structures then shows the existing modifiers that affect the selected rebar set bars, and the direct modification handles of the modifiers. Different modifiers have different colors as follows:

Modifier Color Example
Property modifier Light green
End detail modifier Magenta
Splitter Orange
Secondary guideline Light blue

An arrowhead symbol close to the midpoint of each modifier indicates the direction of the modifier, pointing from the start towards the end of the modifier.

When you select a modifier, Tekla Structures indicates the rebar set bars that are affected by the modifier, and shows the other, unaffected bars as semi-transparent.

You can modify the modifiers by using direct modification, or by changing their properties in the property pane or on the contextual toolbar. When you change the modifier properties, the properties of the rebar set bars change at the location defined by the modifier.

When you delete a modifier, the rebar set reverts to the state it had without the modifier.

Create a property modifier

Property modifiers are shown in light green.

  1. Using the reinforcement selection switches , select the rebar set bars for which you want to create the modifier.
  2. On the Rebar set contextual tab on the ribbon, click Property modifier.
  3. Define how you want to place the modifier in the model.

    Click the Picking mode button on the contextual tab to cycle through the picking modes and to select the picking mode.

    The button indicates that you can pick one point, and the button indicates that you can pick multiple points. The button indicates that the modifier will be created for the selected bars only.

  4. Depending on the selected picking mode, do one of the following:
    • Pick one point to create a single line modifier for the selected rebar set, bar group, or bars.
    • Pick two points to define the end points of a single line modifier. Then click the middle mouse button.
    • Pick multiple points to create a polyline modifier. Then click the middle mouse button to finish picking.
  5. To end the command, press Esc.
  6. To apply local modifications to the rebar set bars at the modifier location:
    1. Select the modifier.
    2. If you need to change the modifier geometry, drag the direct modification handles.
    3. Change the property modifier properties on the contextual toolbar or in the property pane.
    4. If you used the property pane, click Modify to save the changes.

Create an end detail modifier

End detail modifiers affect the nearest end of the bar, so by moving the modifier you can change the bar end that it affects. End detail modifiers are shown in magenta.

Tekla Structures displays the threaded bar ends in dark red.

  1. Using the reinforcement selection switches , select the rebar set bars for which you want to create the modifier.
  2. On the Rebar set contextual tab on the ribbon, click End detail.
  3. Define how you want to place the modifier in the model.

    Click the Picking mode button on the contextual tab to cycle through the picking modes and to select the picking mode.

    The button indicates that you can pick one point, and the button indicates that you can pick multiple points. The button indicates that the modifier will be created for the selected bars only.

  4. Depending on the selected picking mode, do one of the following:
    • Pick one point to create a single line modifier for the selected rebar set, bar group, or bars.
    • Pick two points to define the end points of a single line modifier. Then click the middle mouse button.
    • Pick multiple points to create a polyline modifier. Then click the middle mouse button to finish picking.
  5. To end the command, press Esc.
  6. To apply local modifications to the rebar set bars at the modifier location:
    1. Select the modifier.
    2. If you need to change the modifier geometry, drag the direct modification handles.
    3. Change the end detail modifier properties on the contextual toolbar or in the property pane.
    4. If you used the property pane, click Modify to save the changes.

Create a splitter

Splitters split bars and create lap or crank splices. Splitters are shown in orange.

  1. Using the reinforcement selection switches , select the rebar set bars for which you want to create the modifier.
  2. On the Rebar set contextual tab on the ribbon, click Splitter.
  3. Define how you want to place the splitter in the model.

    Click the Picking mode button on the contextual tab to cycle through the picking modes and to select the picking mode.

    The button indicates that you can pick one point, and the button indicates that you can pick multiple points. The button indicates that the splitter will be created for the selected bars only.

  4. Depending on the selected picking mode, do one of the following:
    • Pick one point to create a single line splitter for the selected rebar set, bar group, or bars.
    • Pick two points to define the end points of a single line splitter. Then click the middle mouse button.
    • Pick multiple points to create a polyline splitter. Then click the middle mouse button to finish picking.
    Tip:

    If you want to create the splitter at a rounded distance from a bar end, and the dimension shown is measured from the other bar end, hold down Shift when you are placing the splitter in the model to switch the measuring point to the other bar end.

  5. To end the command, press Esc.
  6. To apply local modifications to the rebar set bars at the splitter location:
    1. Select the splitter.
    2. If you need to change the splitter geometry, drag the direct modification handles.
    3. Change the splitter properties on the contextual toolbar or in the property pane.
    4. If you used the property pane, click Modify to save the changes.

Create a secondary guideline

You can create up to two secondary guidelines for a rebar set. Secondary guidelines are shown in light blue.

Note that if a rebar set was created using the By guidelines command, or if it otherwise has leg surfaces, you can only create one secondary guideline.

  1. Select a rebar set.
  2. On the Rebar set contextual tab on the ribbon, click Secondary guideline.
  3. Define how you want to place the guideline in the model.

    The button on the contextual tab indicates that you can pick one point, and the button indicates that you can pick multiple points. Click the button to change the picking mode.

  4. Depending on the picking mode, do one of the following:
    • Pick one point to create a single line guideline.
    • Pick two points to define the end points of a single line guideline. Then click the middle mouse button.
    • Pick multiple points to create a polyline guideline. Then click the middle mouse button to finish picking.
  5. To create another secondary guideline, repeat steps 3 and 4.

    If there are already two secondary guidelines in a rebar set, the tooltip of the button changes to Maximum number of secondary guidelines reached and you cannot create more guidelines.

  6. Press Esc to stop creating secondary guidelines.
  7. If needed, select a secondary guideline and modify its geometry and properties.

    For example, you can adjust the secondary guideline's length or spacing values.

    See also Distribute bars in a rebar set.

  8. To set a secondary guideline as the primary guideline, select the secondary guideline and click Set as primary on the contextual toolbar.
Tip:

Alternatively, you can create secondary guidelines the same way as you copy other modifiers: hold down Ctrl and drag the primary guideline.

Create a modifier by copying

You can copy rebar set modifiers.

  1. Select a rebar set, bar group, or bar to show its modifiers.

    If you cannot see modifiers, ensure that the required modifier types are set visible.

  2. Select the modifier that you want to copy.
  3. Hold down Ctrl and drag the modifier to the desired location.

    Tekla Structures creates a new modifier when you release the mouse button.

  4. Select the modifier to modify its geometry and properties as needed.

Change the direction of a modifier

You can change the direction of rebar set modifiers, splitters, and guidelines.

  1. Select a rebar set, bar group, or bar to show its modifiers.

    If you cannot see modifiers, ensure that the required modifier types are set visible.

  2. Select the modifier whose direction you want to change.
  3. On the contextual toolbar, click Swap ends.

    The arrowhead symbol close to the midpoint of the modifier changes direction, indicating the changed modifier direction.

Make a modifier follow edges

You can define that a rebar set modifier, splitter, or guideline attempts to follow the leg face edges that are located between the modifier end points. This is useful when you reinforce and detail curved concrete structures, for example.

  1. Move the modifier end points to the leg face edges.
  2. If there are cuts at the edges, add intermediate points to the modifier, and drag the handles to the corners of the cuts.
  3. Double-click the modifier to open its properties in the property pane. Select Yes in the Follow edges list, and then click Modify.

    Alternatively, select the modifier and click on the contextual toolbar.

Show or hide rebar set modifiers

If you have many rebar set modifiers in your model, it may be useful to only show some of them when you select rebar set bars, and hide the ones that are not currently needed. You can show and hide modifiers according to their type.

For example, you can show the end detail modifiers only, and hide all property modifiers and splitters.

You can also show or hide primary and secondary guidelines.

  1. Go to the Rebar tab and click Visibility.
  2. Do any of the following:
    • Click Guidelines to switch the guidelines on or off.
    • Click Property modifiers to switch the property modifiers on or off.
    • Click Splitters to switch the splitters on or off.
    • Click End detail modifiers to switch the end detail modifiers on or off.

Alternatively, you can use the following keyboard shortcuts or advanced options:

To show or hide the rebar set modifiers that have been created by using components, use the advanced option XS_REBARSET_SHOW_MODIFIERS_CREATED_BY_COMPONENTS. By default, this advanced option is set to FALSE and these modifiers are hidden when you select rebar set bars.

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