Prestress Loss Parameters Form

Use the Prestress Loss Parameters form to specify friction and anchorage losses and other loss parameters

Friction and Anchorage Losses. Accept the defaults or use the edit boxes in this area can be used to specify the Curvature Coefficient, the Wobble Coefficient, and the Anchorage Set Slip.
Other Loss Parameters. When tendons are modeled as elements, the parameters in this area of the form (Elastic Shortening Stress, Creep Stress, Shrinkage Stress, Steel Relaxation Stress) apply in addition to the losses computed by the analysis due to time dependent behavior defined in the material properties. Elastic Shortening Stress generally should be set to zero.
Units drop-down list. Use the displayed units or select new units from the drop-down list.
Show Prestress Losses button. Click to display the Tendon Response form.

See Also

Access the Prestress Loss Parameters form as follows:

Click the Bridge > Bridge Objects > Prestress Tendons command or on the Bridge Wizard select the Prestress Tendons item in the Bridge Object Assignments area and click the Assign/Show Tendons button.
When the Assign Prestress Tendons form displays, click the Add New Tendon button, or highlight a previously defined tendon in the Tendon display area and click the Add Copy of Tendon or Modify/Show Tendon button, to display the Bridge Tendon Data form.
Click the Loss Params button to display the Prestress Loss Parameters form.

Alternatively, the following approach can be used if the form is being used when the Bridge Object is being defined or reviewed.

Click the Bridge > Bridge Objects > Expand arrow command, or on the Bridge Wizard select the Bridge Object Definition item and click the Define/Show Bridge Objects button, to display the Define Bridge Objects form. At least a layout line and a bridge deck section must be defined for this command to be available.
- Alternatively, bypass the Define Bridge Objects form by clicking the Bridge > Bridge Objects> New command and go directly to the Bridge Object Data form identified in the next step.
Click the Add New Bridge Object button, or highlight a previously defined bridge object in the Bridge Objects area of the form and click the Add Copy of Bridge Object or Modify/Show Bridge Object button, to display the Bridge Object Data form.
In the Modify/Show Assignments display list, highlight the Prestress Tendon item and click the Modify/Show button to display the Assign Prestress Tendon form.
- Alternatively, on the Bridge Wizard select the Prestress Tendons item in the Bridge Object Assignments area and click the Assign/Show Tendons button to access the Assign Prestress Tendons form.
Click the Add New Tendon button, or highlight a previously defined tendon in the Tendon display area and click the Add Copy of Tendon or Modify/Show Tendon button, to display the Bridge Tendon Data form.
Click the Loss Params button to display the Prestress Loss Parameters form.