Reinforcing bar and bar group properties

Tekla Structures
Tekla Structures

Reinforcing bar and bar group properties

Use the Single rebar and Rebar group properties to view and modify the properties of reinforcing bars and reinforcing bar groups. The file name extension of the property file is:

General, Hooks, Cover thickness, IFC export, More

The following properties are available for single reinforcing bars and reinforcing bar groups:

Option Description

User-definable name of the bar.

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


Steel grade of the bar.

Size-grade-radius combinations are predefined in the rebar catalog. Click the ... button to open the Select rebar 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.


Diameter of the bar.

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

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.


Use to group reinforcement.

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

Numbering Mark series of the reinforcing bar.
Hook type Shape of the hook.

The rebar catalog (rebar_database.inp) contains the predefined minimum bending radius and minimum hook length for all standard hooks.

See Add hooks to reinforcing bars.

Angle Angle of a custom hook.
Radius Internal bending radius of a standard hook or custom hook.
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.
IFC entity

For IFC export, select the IFC entity type and subtype of the bar or bar group. The available subtypes depend on the selected IFC entity.

You can select the IFC4 subtype among the predefined options, or you can select USERDEFINED and then enter any text in User-defined type (IFC4).

Subtype (IFC4)
User-defined type (IFC4)

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.

Special, Distribution

The following properties are available for:

  • reinforcing bar groups, including tapered groups
  • curved reinforcing bar groups
  • circular reinforcing bar groups
Option Description
Rebar group type

What is the type of the group.

See Create a tapered or spiral reinforcing bar group.

Number of cross sections
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
Exclude Which bars are omitted from the group.

See Delete bars from a reinforcing bar group.

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