Schedule Variance & Delay Analysis Flashcards
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Read the first 7 Schedule Variance & Delay Analysis flashcards as text
Which recovery schedule technique adds resources to critical activities to compress the schedule while minimizing additional cost?
Answer: Crashing
Crashing adds resources (overtime, additional crew) to critical path activities to reduce duration, with a focus on the lowest cost-slope activities first.
A contractor submits a Time Impact Analysis (TIA) for an owner-caused delay. The TIA must demonstrate that the delay event:
Answer: Impacted the critical path and extended the contract completion date
A valid TIA must show that the delay event pushed activities onto or further along the critical path, resulting in a later project completion date.
Schedule Variance at Completion (SV at completion) is zero when:
Answer: The project finishes exactly on its planned completion date
Schedule Variance at completion is zero only when the project actually completes on the planned finish date, meaning all planned work was completed as scheduled.
The 'critical path collapse' (Collapsed As-Built) method in delay analysis works by:
Answer: Removing all delay events from the as-built schedule to calculate the theoretical shortest completion
The Collapsed As-Built method removes delays from the as-built schedule to reveal what the completion date would have been without those delays.
If the SPI = 1.15 and the project is 60% complete by schedule, what does this suggest?
Answer: The project is performing 15% more efficiently than planned and is likely ahead of schedule
An SPI of 1.15 means the team is earning $1.15 of planned value for every $1.00 worth of scheduled time, indicating ahead-of-schedule performance.
In delay analysis, what distinguishes a 'compensable delay' from a 'non-excusable delay'?
Answer: Compensable delays are caused by the owner and entitle the contractor to both time and money; non-excusable delays are the contractor's fault
Compensable delays are caused by the owner (or their agents), entitling the contractor to a time extension plus additional costs; non-excusable delays are the contractor's responsibility with no relief.
During a schedule review, you find that Activity G has a Late Start of Day 20 and an Early Start of Day 12. What is the Total Float for Activity G?
Answer: 8 days
Total Float = Late Start − Early Start = 20 − 12 = 8 days.