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  6. Modify assumed cracked settings

Modify assumed cracked settings

Tekla Structural Designer
2020
Tekla Structural Designer

Modify assumed cracked settings

You can graphically review and modify the assumed cracked setting of the concrete beams, columns and walls in a Review View using Show/Alter State - Assume cracked.

Set or toggle assumed cracked settings

  1. Open a view and change the view regime to Review View.
  2. On the Review toolbar, click Show/Alter State.
  3. Go to the Properties window.
  4. In the Attribute list, select Assume cracked.
  5. Set the [M]ode to one of the following:
    • Set cracked - click or box around concrete member(s) to set to cracked.
    • Set uncracked- click or box around concrete member(s) to set to uncracked.
    • Toggle - click or box around concrete member(s) to toggle between cracked or uncracked.

    The member color coding updates to reflect the cracked or uncracked status.

Review Wall Stress

Note: The following limitations and assumptions apply to Review Wall Stress

  1. Only meshed wall panels are considered, mid-pier walls are excluded.

  2. The analysis type specified in Design Settings>Analysis determines which set of analysis results are used for the review.

  3. For the above analysis type, the loadcases and combinations considered are those from the last performed building analysis of that type.

    • This gives you the flexibility to review the stresses for a subset of loadcases/combinations if required.

    • By running Analyse All you can ensure all active gravity, lateral and seismic (not seismic RSA) combinations have been considered.

      • Stresses are available for seismic but not for seismic RSA combinations - these are beyond scope. (Review Wall Stress is more particularly aimed at determining the cracked status of panels under wind loading).

  4. Chasedown results are not considered.

  5. Axial load reductions are always taken into account.

  6. The maximum stress value from all nodes for all analysed cases/combinations is reported in a tooltip for each panel. This value is used to determine if the stress threshold has been exceeded.

    • The reinforcement content in the panel is not considered in determining the stress value.

  7. The loading droplist in the status bar does not filter the status for individual cases/combinations.

To review/update the cracked status of all wall panels to be compatible with the stress levels for the loadcases/ combinations that have been analysed, proceed as follows:
  1. Open a view and change the view regime to Review View.
  2. On the Review toolbar, click Show/Alter State.
  3. Go to the Properties window.
  4. In the Attribute list, select Assume cracked.
  5. Set the [M]ode to Review Wall Stress.
  6. Check the yellow command prompt to confirm which analysis type is being used for the review, (this will be the type currently specified in Design Settings>Analysis).

  7. Set the Result type to control which factors to use in combinations for the review.
    • Strength factors, or
    • Service factors
  8. Set the Stress type to be considered.
    • Max tension - Y, or
    • In-plane tension - Y
  9. Set the Stress threshold above which walls should crack. The existing cracked/uncracked status of each panel is displayed, along with an indiation of whether the stress threshold has been exceeded.
  10. To make panel status compatible with the stress threshold for one or more panels:
    1. click an individual panel, or
    2. box around multiple panels, or
    3. to make all panels compatible, click then click the Auto update button
    Panel status is made compatible, i.e.

    • If uncracked and the stress threshold has been exceeded, the status is changed to cracked.

    • If cracked and the stress threshold has not been exceeded, the status is changed to uncracked.

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