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Create a reinforcing bar group using Rebar shape catalog

Added August 31, 2016 by Tekla User Assistance tekla.documentation@trimble.com

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Create a reinforcing bar group using Rebar shape catalog

Create a reinforcing bar group using Rebar shape catalog

A reinforcing bar groupgroup of reinforcing bars that are side by side and have identical properties, except the possible variation in bar lengths

includes several identical, or very similar, reinforcing bars. You can create a reinforcing bar group by selecting a predefined reinforcement shape from Rebar shape catalog. The predefined shapes in Rebar shape catalog are based on the shapes that have been defined in Rebar shape manager and saved in the RebarShapeRules.xml file.

Rebar shape catalog does not work with tapered reinforcing bar groups.


If you do not want to use the predefined shapes but want to manually define the bar shape, use the Bar group command instead.

  1. On the Concrete tab, click Rebar and select Rebar shape catalog.

    The Rebar Shape Catalog dialog box opens.

  2. Select one of the predefined shapes from the tree view on the left.

    You can add frequently used shapes to the tree view , or delete the shapes that you do not need.

    If you select an existing reinforcement in the model and click the Get button, the properties of that reinforcement are displayed in the Rebar Shape Catalog dialog box.

  3. If needed, modify the bar properties.

    Length of leg can be entered with or without parenthesis.

    • With parenthesis: the leg length is calculated automatically according to the object dimensions.

    • Without parenthesis: the exact value of the leg length is used.

      The hook properties are visible only if you have set the advanced option XS_REBAR_RECOGNITION_HOOKS_CONSIDERATION to FALSE in File menu > Settings > Advanced Options > Concrete Detailing.

    For circular, polygonal and spiral reinforcement you can enter Diameter and Overlap distance instead of Length of leg.

  4. If needed, set the reference point of the reinforcement to start, middle, or end by double-clicking the different legs or hooks in the preview of the shape.
  5. Click OK.
  6. In the model, place the mouse pointer over a part face or edge.

    A preview showing the placing and dimensions of the reinforcement is displayed.

  7. Based on the preview, select a placing for the reinforcing bar group and click the left mouse button.

    Tekla Structures creates the reinforcement.

  8. If you want to modify the reinforcement, do one of the following:
    • Use direct modification. Ensure that the Direct modification switch is active.

    • Double-click the reinforcement to open the Reinforcing Bar Properties dialog box and modify the properties.

Reinforcing bar group properties

Use the Reinforcing Bar Properties dialog box to view and modify the properties of 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.

groups. The file name extension of the properties file is .rbg.

Option Description
Bar prefix and start number Mark series of the reinforcing bar.

User-definable name of the bar.

Tekla Structures uses bar names in reports and drawing lists, and to identify bars of the same type.


Diameter of the bar.

Depending on the environment, the nominal diameter of the bar, or a mark that defines the diameter.

Size-grade-radius combinations are predefined in the reinforcing bar catalog. Click the Select button to open the Select Reinforcing Bar dialog box. The dialog box shows the available bar sizes for the chosen grade. You can also select whether the bar is a main bar or a stirrup or tie.

The rebar_database.inp file contains the predefined reinforcing bar catalog entries.


Steel grade of the bar.

Bending radius

Internal radius of the bends in the bar.

You can enter a separate value for each bar bend. Separate the values with spaces.

Bending radius complies with the design code you are using. Main bars, stirrups, ties, and hooks usually have their own minimum internal bending radii, which are proportional to the diameter of the reinforcing bar. The actual bending radius is normally chosen to suit the size of the mandrels on the bar-bending machine.


Used to group reinforcement.

For example, you can display bars of different classes in different colors.

Hooks Shape Shape of the hook.

The rebar_database.inp file contains the predefined minimum bending radius and minimum hook length for all standard hooks.

See Add hooks to reinforcing bars.

Hooks Angle Angle of a custom hook
Hooks Radius Internal bending radius of a standard hook or custom hook.
Hooks Length Length of the straight part of a standard or custom hook.
Cover thickness on plane Distances from the part surfaces to the bar on the same plane as the bar. See Define the reinforcement cover thickness.
Cover thickness from plane Distance from the part surface to the bar, or to the bar end, perpendicular to the bar plane.
Start Concrete cover thickness or leg length at the first end of the bar.
End Concrete cover thickness or leg length at the second end of the bar.
User-defined attributes

You can create user-defined attributes to add information about reinforcement. Attributes can consist of numbers, text, or lists.

You can use the values of user-defined attributes in reports and drawings.

You can also change the name of the fields, and add new ones, by editing the objects.inp file. See User-defined attributes (UDAs) in the objects.inp file.

Option Description  
Creation method How the bars are spaced.

See Distribute bars in a reinforcing bar group.

Number of reinforcing bars
Target spacing value
Exact spacing value
Exact spacing values
Reinforcing bar(s) not to be created to the group Which bars are omitted from the group.

See Delete bars from a reinforcing bar group.

Rebar group type What is the type of the group.

See Create a tapered or spiral reinforcing bar group.

Number of cross sections

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