During a weekly construction coordination meeting, the electrical subcontractor reports they cannot install panel boxes until the framing is complete. This is an example of what type of dependency?
Correct Answer
B) Finish-to-Start
This is a Finish-to-Start dependency because the framing must be finished before the electrical panel installation can start. This is the most common type of dependency in construction scheduling.
Why This Is the Correct Answer
This is a Finish-to-Start dependency because the framing work must be completely finished before the electrical panel installation can begin. The electrical subcontractor cannot start their work until the framing subcontractor has finished creating the structural framework. This represents the most common sequential relationship in construction where one task must be completed before the next can commence. The dependency clearly shows that the predecessor activity (framing) must finish before the successor activity (electrical panel installation) can start.
Why the Other Options Are Wrong
Option A: Start-to-Start
Start-to-Start dependency means both activities can begin at the same time, but one may need to start slightly after the other. This doesn't apply here since electrical panels cannot be installed while framing is still in progress.
Option C: Start-to-Finish
Start-to-Finish dependency is rarely used in construction and means the start of one activity controls when another activity can finish. This doesn't describe the relationship between framing completion and electrical panel installation.
Option D: Finish-to-Finish
Finish-to-Finish dependency means both activities must finish at the same time or one must finish before the other finishes. This doesn't apply since the electrical work starts after framing is complete, not finishing simultaneously.
Memory Technique
Use 'F-S = First-Second' - the first activity must finish before the second activity can start. Think of it like a relay race where one runner must finish before handing the baton to start the next runner.
Reference Hint
Project Management chapter in the Florida General Contractor Reference Manual, specifically the section on Critical Path Method (CPM) scheduling and activity dependencies
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