Define flat bar sizes with the Fltprops.inp file

Last updated September 10, 2019 by Tekla User Assistance

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Define flat bar sizes with the Fltprops.inp file

Define flat bar sizes with the Fltprops.inp file

Use the Fltprops.inp file, located in the \profil folder under the environment folder ..\ProgramData\Trimble\TeklaStructures\<version>\environments\ , to define flat bar thickness, width and material. The exact location may vary depending on your environment.


Copy the Fltprops.inp file to a model, project or firm folderfolder that is used for storing Tekla Structures-related files customized for a particular organization

A Tekla Structures user can, for example, customize a company’s cloning templates and save them in a sub-folder located under the firm folder. After this, the customized cloning templates can be used in all projects carried out for the company.

and then modify the file in the new location as required.

The first row in the file contains flat bar material definitions (enclosed in quotes " ") followed by plate(1) part that represents a flat structure

(1) In some contexts, for example in analysis, the term plate object may be used to refer to plates.

(2) plate that represents a steel structure

(2) Plate is mainly used as a connection piece or as a floor plate.

thicknesses. If you do not define a material, you can use all materials for all flat bars. The following rows define the widths of available flat bars.

The units are millimeters.


Fltprops.inp contains the following data:

With the above data, Tekla Structures displays the following plates as flat bars:



5x40, 5x45, 6x50, 6x55

All materials

8x60, 8x65, 10x70, 10x75


10x100, 10x110, 15x200, 15x220


The flat bars get the prefix that is set in the XS_​FLAT_​PREFIX advanced option.

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