Design and Design type tabs

Tekla Structures
2021
Tekla Structures

Design and Design type tabs

Some component dialog boxes include a Design tab, others include a Design type tab. You can use the options on these tabs to check if the component will bear the uniform distributed load (UDL). Some Design tabs include only the design check. Tekla Structures saves the design summary as a .txt file in the model folder.

You can use AutoDefaults rule groups and Excel files in the design check:

  • AutoDefaults rule groups automatically modify component properties to take the calculated load. To define which AutoDefaults rule group to use, go to the General tab and select the rule in the AutoDefaults rule group list box.

    For more information, see Using reaction forces and UDLs in AutoDefaults and AutoConnection.

  • The information in an Excel file checks the connection design and automatically updates component properties to bear the UDL. This is useful when you want to check connection design according to other design codes. See Excel spreadsheets in connection design.

Design tab

This design check is intended to be used with imperial units.

To check the design:

  1. Go to the Design tab and select Yes in the Use UDL list.
  2. To use information in an Excel spreadsheet in the UDL calculation, select Excel in the External design list.
  3. Enter the information you want to use in the calculation.
  4. Select the connection in the model and click Modify.

    Tekla Structures checks the component. A green component symbol indicates that the connection will bear the UDL, red indicates that it will not.

  5. To view the results of the check, right-click the component symbol and select Inquire from the pop-up menu.

    The Inquire object dialog box shows the summary of the design check and related information.

See also Excel spreadsheets in connection design.

Design type tab

This design check is intended to be used with imperial units.

To check the design:

  1. Go to the Design type tab and select Yes in the Check connection list.

    Tekla Structures checks the connection each time it is used or changed in the model.

  2. Enter the information you want to use in the calculation.
  3. Select the connection in the model and click Modify.

    Tekla Structures checks the component. A green component symbol indicates that the connection will bear the UDL, red indicates that it will not.

  4. To view the results of the check, right-click the component symbol and select Inquire from the pop-up menu.

    The Inquire object dialog box shows the summary of the design check: the part checked, the name of the check, the applied and allowed force and how much capacity has been used, the results and possible solutions.

Design tab for check design only

The design is based on the British standard BS5950.

The design has the following limitations:

  • Design only works in the UK environment.
  • Design is available only if the main part and the secondary parts are perpendicular.
  • Design is available only with two bolts horizontally.
  • Design is available only when vertical bolts are defined from the top.
  • Design is valid for I profiles only.

To check the design:

  1. Go to the Design tab and select On in the Design list.
  2. Enter the Tie Force in kilo Newtons (kN).

    Tie force is required if the design check is turned on and the framing type of the connection is beam-to-column. If there is no tie force, enter 0.

  3. Enter the Shear Force in kN.

    If the design check is turned on, enter a positive value. If there is no shear force, enter 0.

  4. Select the connection in the model and click Modify.

    The connection symbol shows the design check status:

    • Green means that the design check was successful.
    • Yellow means that a warning occurred in the design check.
    • Red means that a fatal error occurred in the design check.
  5. To view the results of the check, right-click the connection symbol and select Inquire from the pop-up menu.

    The Inquire object dialog box shows the summary of the design check and related information.

Note: If the message Numbering not up to date is shown in the Inquire object dialog box, the marks will not be correct. You need to renumber the model to ensure that the marks are up-to-date. After that use the Inquire command again to get the correct marks to the design check summary.
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