Add/Edit Tendons > Edit Vertical Profile

Form: Tendon Vertical Profile, Add Support To Span {Number}, Remove Support From Span {Number}, Tendon Span Length Change

Use the Edit menu > Add/Edit Tendons > Edit Vertical Profile command to review and edit the layout of selected tendon objects in profile. Edit the tendon graphically by dragging control points or by changing profile parameters in a table, and each span may have a unique vertical profile.

Select the tendons to be edited, and use the Edit menu > Add/Edit Tendons > Edit Vertical Profile command to access the Tendon Vertical Profile form.

• Display: The selected tendon is shown in a developed elevation view with each span dimensioned; the current span is highlighted. A span may be made current by clicking anywhere between the span supports. Move the mouse cursor over a control point and an information box is displayed that lists the span number and the profile parameters for the point. To alter the profile of a tendon graphically, move the mouse cursor over a control point, hold down the left button and drag it to a new location. Drag and nudge options are listed in the control point information box.

Move the mouse cursor anywhere in the display area, and the cursor location will be shown using the following parameters:

• • Current Vertical Scale: The vertical scale has been multiplied by this value relative to the horizontal scale. This value is one or greater and is used to improve the visibility of the tendon profile.

  • • S: This is the position of the cursor along the length of the tendon in a horizontal projection.

    • ZDatum: Position of the cursor relative to the tendon datum offset in the Z-axis direction.

    • GX: Position of the cursor along the global X-axis.

    • GY: Position of the cursor along the global Y-axis.

    • GZ: Position of the cursor along the global Z-axis.

Also in the display area are a number of buttons for display and editing control. The Redo/Undo, Zoom and Pan buttons work in the same manner as those on the main SAFE toolbar. The following six buttons are unique to the Tendon Vertical Profile form:

1. • • The Increase Vertical Scale button, , increases the vertical scale of the display relative to the horizontal scale. The multiplier is shown in the Current Vertical Scale parameter listed below the display.

     • The Decrease Vertical Scale button, , decreases the vertical scale of the display relative to the horizontal scale. The multiplier is shown in the Current Vertical Scale parameter listed below the display.

     • The Reset Vertical Scale to Default button, , resets the vertical scale of the display to the default multiplier. The multiplier is shown in the Current Vertical Scale parameter listed below the display.

     • Select a current span and click the Add Support in Current Span button, , to display the Add Support To Span form. Use this form to specify the location of the new support in absolute or relative terms (distance is measured in terms of the horizontal projection), and select the new span geometries from the drop-down lists of previously defined spans.

• • • Select a current span and click the Delete Support in Current Span button, , to display the Remove Support From Span form. Use this form to specify which span support is to be removed, and select the span geometry for the combined span from the drop-down list of previously defined spans.

    • The Show/Hide Tendon Control Point Nodes button, , toggles on and off the display of the tendon control points. This toggle is on when the button is highlighted.

• Span Data: Review and edit tendon profile data using the following drop-down lists, tables and displays:

• • Select Tendon: Select the name of a tendon object from the drop-down list if more than one tendon object was selected before the Edit menu > Add/Edit Tendons > Edit Vertical Profile command was used. The profile of the selected tendon is shown in the Display area.

  • Current Span: Select the span that is to be reviewed or modified from the drop-down list if more than one span exists for the selected tendon. The selected span is highlighted in the Display area.

  • Span Profile Type: Select Linear, Parabola, Reverse Parabola, Harped One Point or Harped Two Point, as well as numerous partial shapes from the drop-down list for the profile of the tendon in the current span. The partial shapes are typically used to define the profiles of the tendon cantilevers that occur at the ends.

  • Spreadsheet: The items displayed in the spreadsheet define the geometry of the tendon profile for the current span and profile type. Heights are defined relative to the tendon datum location. Horizontal distances are defined relative to the horizontal projection of the tendon in plan. Values in the spreadsheet may be edited by typing new values into the edit boxes. Changes to the values will result in changes to the tendon profile shown in the Display area.

Note:  When a span length is modified in the spreadsheet, the program will adjust the length of the adjacent span(s) automatically such that the total length of the tendon remains unchanged. When adjacent spans exist on both sides of the span whose length is being modified, the Tendon Span Length Change form will display. Use the form to specify that the length of the span preceding or the span following the span being modified is to be adjusted to keep the total tendon length unchanged.

• • Span Profile Parameters: This graphic illustrates the location of the profile parameters listed in the Spreadsheet and shown in the control point information boxes in the Display area.

• Click To: The three buttons in this area allow for further editing and review of tendon layout:

• • Modify/Show Tendon Plan Layout (Horizontal) button. Click this button to access the Tendon Object Type Options form. Use that form to review and edit the plan layout of the selected tendon.

  • Show Generated Tendon Point Table button. Click this button to access the Object Geometry – Tendons – Discretized Points form (this form has menu commands and buttons similar to the Database Table Form). This form displays a table of the discretized points and their global coordinates that define the selected tendon geometry. These values cannot be edited on this table, but the table can be sorted and filtered, as well as exported and printed.

  • Reset Supports and Spans to Default button. Click this button to immediately reset any changes made to the selected tendon’s profile on the Tendon Vertical Profile form to the default settings. This includes removing or adding supports as needed.

• Tendon Datum Offset: Enter the offset for the tendon datum relative to the model datum in the Datum Offset edit box. Typically, the model datum represents the top of slab, while the tendon datum is set at the bottom of slab.

• Tendon Editing Options: Check the Limit Tendon Vertical Location Within Section check box to set limits for the tendon profile. Enter the maximum distance allowed above the tendon datum in the Maximum Top Tendon CGS edit box. CGS is the center of gravity of the prestressing tendon. Enter the minimum distance allowed above the tendon datum in the Minimum Bottom Tendon CGS edit box.

Check the Hide Tendon Node Point Note check box if you do not want the information box to display when you move the mouse cursor over a control point in the Display area.

Also see

Edit Plan Layout (Horizontal)

Reset Supports and Spans to Default