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Reinforcement strand properties

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

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Reinforcement strand properties

Reinforcement strand properties

Use the Strand Pattern Properties dialog box to view and modify the properties of strands. The file name extension of the properties file is .rbs.

General tab

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

User-definable name of the strand.

Tekla Structures uses bar names in reports and drawing lists, and to identify strands 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.

Grade 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.


Used to group reinforcement.

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

Pull per strand Pre-stress load per strand (kN).
Number of cross sections

Number of cross sections of the strand pattern.

For example:

  • Number of cross sections along strand profile = 1:

  • Number of cross sections along strand profile = 2:

  • Number of cross sections along strand profile = 3:

  • Number of cross sections along strand profile = 4:

In this double-tee beam, the number of cross sections is 4:

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.

To create user-defined attributes, click the User-defined attributes button in the reinforcement properties dialog box.

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.

Debonding tab

Option Description
Debonded strands Enter the strand number. The strand number is the selection order number of the strand.

From start

Middle to start

Middle to end

From end

Enter the length of the debonding.

If you select the Symmetry check box, values from From start and Middle to start are copied to From end and Middle to end.

Symmetry Define whether the end and start lengths are symmetrical.

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