Define Parabolic Tendon Layout for Line Object {Number} Form

Use the Define Parabolic Tendon Layout for Line Object {Number} form to refine the parabolic alignment of the tendon.

Plane drop-down list. Choose the tendon line local plane for this tendon definition.
Modify Axes button and Angle display box. Click the Modify Axes button to display the Tendon Local Axis form. Use that form to rotate the tendon axis, as needed. This is an angle by which local axis 2 of the object will be rotated around the local axis 1. Local axis 1 is along the length of the object. By default the local axis 2 is always in the 1-Z plane, except if the object is vertical and then it is parallel to the global X axis.
Number of Points edit box. Specify the number of points to be used to define the parabolic shape of the tendon using this edit box.
Tendon Layout Data spreadsheet area. As described above, this form can be accessed using the Quick Start button or the Parabolic Calculator button on the Tendon Data for Line Object form.
- If the form is accessed using the Quick Start button, this area will be "pre-loaded" with the coordinate and slope data for the template parabolic tendon chosen on the Tendon Quick Start Templates form. Review the data, and as necessary, make changes using the Number of Points edit box, the Quick Start button (lower left corner of the form), and the spreadsheet cells, as described below.
- If the form is accessed using the Parabolic Calculator button, this area of the form will be loaded with the data for the beginning and ending of the tendon. Use the Number of Points edit box, the Quick Start button (lower left corner of the form), and the spreadsheet cells to change the data as follows:
- - Number of Control Points area and Number of Points edit box. Typing a new number in this edit box will add blank rows to the spreadsheet area. Click in those cells to type in new data for the coordinates and slope, or to display a drop-down list for the Slope Type and if necessary, specify the slope ratio.

When changes are made using the Quick Start button in the lower left corner of the form (see next bullet), this edit box will change automatically.

- - Template (Num Spans) area and Quick Start button (lower left corner of the form). Use the drop-down list associated with this button to specify the number of spans to be used in defining the parabolic shape of the tendon. After selecting a number, click the Quick Start button to automatically fill the Tendon Layout Data spreadsheet area with program-calculated coordinate and slope data for the parabolic tendon. Those data then can be edited by clicking in the cells and typing new data for the coordinates and slope, or by selecting from the Slope Type drop-down list and if necessary, specifying the slope ratio.
  - Coord 1, Coord 2 Type, Coord 2, Slope Type, and Slope edit boxes and drop-down lists. Use the cells in these columns to specify that coordinate 2 be user-specified or program calculated, and if user-specified, to specify the value for coordinate 2 in the Coord 2 edit box; to specify that the slope be user specified or program calculated, and if user-specified, to specify the slope ratio in the Slope edit box.
Display Area. This area of the form will display a graphic of the data in the Tendon Layout Data spreadsheet area. Use the various options associated with it to evaluate the graphic and locate and control the mouse pointer.
- Units drop-down list. Use the existing units or use the drop-down list to select revised units for working with the data on the form.
- Distance display/edit box. This display box shows the location of the mouse pointer on the graphic as measured from the start of the tendon. Typing a distance value in the edit box will move the mouse pointer to that location.
- Coord 1, Coord 2, and Slope display boxes. These display boxes show the coordinate and slope data for the mouse pointer as it passes over the graphical display. The values cannot be edited.
- No Snap option. When this option is chosen, no snaps are enabled and, as the mouse pointer is moved over any portion of the display, the location of the mouse pointer will display, as appropriate, in the Coord 1, Coord 2 and Slope display boxes.
- Snap to Local 1 Axis option. When this option is chosen, CSiBridge displays a small red dot that snaps to the Local 1 Axis and, as the mouse is moved, displays the coordinate data for that point along the Local 1 Axis in the Coord 1 display box.
- Snap to Tendon option. When this option is chosen, CSiBridge displays a small red dot that snaps to the tendon and displays the coordinate data for that point along the tendon in the Coord 1, Coord 2 and Slope display boxes.
- Snap to Points option. When this option is chosen, CSiBridge displays a small red dot that snaps to the points along the tendon and displays the coordinate data for the point that define the tendon in the the Coord 1, Coord 2 and Slope display boxes.
Calculated Results
- Clear button. Clicking this button will remove any program-calculated results from the spreadsheet area and will remove the graphical display from the display area.
- Refresh button. Click this button to ensure that the graphic display reflects any changes made to the data in the spreadsheet area of the form.
Use Calculated Results for this Tendon check box and Done button. If this check box is checked when the Done button is clicked, the data in the spreadsheet area will be transferred automatically to the Tendon Layout Data area of the Tendon Data for Line Object form. If the check box is not checked, the data will be ignored.

Access the Define Parabolic Tendon Layout for Line Object {Number} form as follows:

Click the Advanced > Draw > Draw Frame/Cable/Tendon command to display the floating Properties of Object form.
Select Tendon from the Line Object Type drop-down list.
Click in the active view to specify the beginning point of the tendon. Click a second time to specify the end point of the tendon.
Release the mouse button to display the Tendon Data for Line Object form.
Click either of the following buttons
- Quick Start button.
- 1. Click the Quick Start button to display the Tendon Quick Start Templates form.
  2. Choose a "Parabolic Tendon" option and click the OK button to display the Define Parabolic Tendon Layout for Line Object {Number} form.
- Parabolic Calculator button. Click this button to display the Define Parabolic Tendon Layout for Line Object {Number} form.

Note: After a tendon has been drawn as described above (Steps 1 through 3), right clicking on the tendon will display the Tendon Data for Line Object form (replaces Steps 1 through 4).