Dangles are loosely-tied activities in the project schedules which means that they don’t have defined start or end dates.
Project Schedule with Dangle or Dangling activities is not a close diagram and have open loops which make it’s logic incomplete. This happens because of missing clear, legitimate and logical relationships within activities of the project.
Challenges of Dangling activities
- With Dangle activities in the scheduled project, start or end date cannot be clearly identified
- With Dangling activities managing project delays become difficult as identification of these delays are a challenge in the absence of estimated start and end dates
- The dangling activities make the calculation of float/slack become challenging as we cannot identify the early or late start dates of connected activities
Logic Driven project schedules can suffer from two kinds of open-ended or Dangling Logic, which makes the resulting schedule unreliable for dates or float analysis.
Dangling activities not meeting this rule – also known as open-ended activities, “hanging activities”, or simply “hangers” – indicate inadequate schedule logic