Which task dependency involves the successor not being able to start until the predecessor starts?

Which task dependency involves the successor not being able to start until the predecessor starts?

• A. Start-to-Start (SS)
• B. Finish-to-Start (FS)
• C. Finish-to-Finish (FF)
• D. Start-to-Finish (SF)

Answer: (A)

Understanding how task dependencies control when a successor can begin relative to its predecessor is key. In a Start-to-Start relationship, the start of the successor is constrained by the start of the predecessor; the successor cannot begin until the predecessor has begun, though it may start at the same time or a bit later if a lag is used. This matches the scenario described where the successor’s start depends on the predecessor starting. If the dependency were Finish-to-Start, the successor would have to wait for the predecessor to finish before starting. If it were Finish-to-Finish, the constraint would apply to finishing times rather than starting. If it were Start-to-Finish, the finish of the successor would depend on the start of the predecessor, which is a different linkage. So the described condition aligns with a Start-to-Start dependency.

Understanding how task dependencies control when a successor can begin relative to its predecessor is key. In a Start-to-Start relationship, the start of the successor is constrained by the start of the predecessor; the successor cannot begin until the predecessor has begun, though it may start at the same time or a bit later if a lag is used. This matches the scenario described where the successor’s start depends on the predecessor starting.

If the dependency were Finish-to-Start, the successor would have to wait for the predecessor to finish before starting. If it were Finish-to-Finish, the constraint would apply to finishing times rather than starting. If it were Start-to-Finish, the finish of the successor would depend on the start of the predecessor, which is a different linkage.

So the described condition aligns with a Start-to-Start dependency.