1. Home
  2. Tekla Structural Designer
  3. Review models
  4. Review model properties (show/alter state)
  5. Show/alter state
  6. Modify assumed cracked settings

Modify assumed cracked settings

Tekla Structural Designer
2021
Tekla Structural Designer

Review assumed cracked settings

  1. Open a view and change the view regime to Review View.
  2. On the Review tab, 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
  6. Set the Entity type

    The member color coding indicates the cracked, partially cracked or uncracked status.

    Note: By hovering the cursor over an individual member or panel a tooltip is displayed. This reports the cracked status, and also the EImajor, EIminor values. For partially cracked members/panels the percentage is also given.

Set as fully cracked or uncracked

  1. Open a view and change the view regime to Review View.
  2. On the Review tab, click Show/Alter State.
  3. Go to the Properties window.
  4. In the Attribute list, select Assume cracked.
  5. Set the [M]ode to Set On
  6. Set Assume cracked to one of the following:
    • Yes - click or box around concrete member(s) to set to cracked.
    • No- click or box around concrete member(s) to set to uncracked.

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

  7. Select Entire member to apply the new setting to all spans/stacks, or leave it unselected to update individual spans/stacks only.
  8. Click or box around those concrete member(s) you want to set.

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

Set as partially cracked

  1. Open a view and change the view regime to Review View.
  2. On the Review tab, click Show/Alter State.
  3. Go to the Properties window.
  4. In the Attribute list, select Assume cracked.
  5. Set the [M]ode to Set On
  6. Set Assume cracked to Partially
  7. Select Set Percentage
  8. Enter the Percentage required.
  9. Select Entire member to apply the new percentage to all spans/stacks, or leave it unselected to update individual spans/stacks only.
  10. Click or box around those concrete member(s) you want to apply the percentage to.

    The member color coding updates to reflect the partially cracked status.

Toggle assumed cracked settings

  1. Open a view and change the view regime to Review View.
  2. On the Review tab, click Show/Alter State.
  3. Go to the Properties window.
  4. In the Attribute list, select Assume cracked.
  5. Set the [M]ode to Toggle
  6. Click or box around those concrete member(s) you want to toggle.

    The assumed cracked status of the members toggles between cracked, partially cracked, and uncracked.

Review Wall Stress

To review/update the cracked status of all wall panels to be compatible with the stress levels for the loadcases/ combinations that have been analyzed, proceed as follows:
  1. Open a view and change the view regime to Review View.
  2. On the Review tab, 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 partially cracked 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.

Review Wall Stress - limitations and assumptions

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.

Was this helpful?
Previous
Next