Manage schedule task links

Tekla PowerFab
Modified: 25 Mar 2024
2024i
Tekla PowerFab Tekla PowerFab GO

Manage schedule task links

You can define dependencies between two tasks. By creating links, you can make the schedule cascade from one task to another. You can modify and delete existing links.

You can create links between schedule tasks, when you are creating a new task or modifying an existing one. See Add schedule tasks.

Note:
  • A task cannot link to itself.
  • A link cannot be created between a task and one of its subtasks.
  • Duplicate links are not allowed. There can be only one link between a pair of tasks.
  • Link cycles are not allowed. For example, if a link is created from task 1 to task 2, a link cannot be created from task 2 to task 1.
  • When you use links, and the duration of an item changes, the positions of all linked items also changes. Do not link items that need to remain static, or are independent from other items in the schedule.

Add a link that ends with the current task

Note: If a previous snapshot is displayed instead of the current project schedule information, you cannot add a predecessor link.
  1. In the Schedule Tasks dialog box, select a task.
  2. Click New Predecessor Link.

    The Task Link dialog box opens.

  3. In Link From, select the starting task of the link.
  4. In the upper (From) Position field, select if the link originates from the start or end of the starting task.
  5. In Link To, select the task where the link ends.
  6. In the lower (To) Position field, select if the link ends at the start or finish of the second task.
  7. In Minimum Interval, type the minimum number of working days between the two tasks.

    The minimum interval is enforced in the Gantt chart. The later task cannot be moved earlier in the Gantt chart than the value in the Minimum Interval field determines.

  8. Click Add.

For example, to define that shipping must start when the fabrication is finished, select Shipping and set the link a follows:

  • Link From: Fabrication
  • Upper Position: Finish
  • Lower Position: Start
  • Minimum Interval: 0 days

You can now add notes to the schedule tasks. See Add schedule notes.

Add a link that begins with the current task

Note: If a previous snapshot is displayed instead of the current project schedule information, you cannot add a successor link.
  1. In the Schedule Tasks dialog box, select a task.
  2. Click New Successor Link.

    The Task Link dialog box opens.

  3. In the upper Position field, select if the link originates from the start or end of the starting task.
  4. In Link To, select the task that is the ending point of the link.
  5. In the lower Position field, select if the link ends at the start or finish of the second task.
  6. In Minimum Interval, type the minimum number of working days between the two tasks.

    The minimum interval is enforced in the Gantt chart. The later task cannot be moved earlier in the Gantt chart than the value in the Minimum Interval field determines.

  7. Click Add.

For example, to define that shipping must start when the fabrication is finished, select Fabrication and set the link a follows:

  • Upper Position: Finish
  • Link To: Shipping
  • Lower Position: Start
  • Minimum Interval: 0 days

You can now add notes to the schedule tasks. See Add schedule notes.

View and modify link properties

  1. In the Schedule Tasks dialog box, select a task.
  2. Click Link Properties.

    The Task Link dialog box opens.

  3. Modify the starting task, ending task, the task positions, and interval according to your needs.
  4. Click Save to update the link properties.

Delete a link

  1. In the Schedule Tasks dialog box, select a task.
  2. Click a link in the list to select it.
  3. Click Delete Link.

    You are prompted to confirm the deletion.

  4. To permanently delete the link, click Yes.
Was this helpful?
Previous
Next