CCM Cost and Time Management Questions and Answers — Questions and Answers
Question 1: A construction project's performance is being tracked using Earned Value Management (EVM). At the end of a reporting period, the following data is available: Budget at Completion (BAC) = $1,500,000, Planned Value (PV) = $700,000, Earned Value (EV) = $650,000, and Actual Cost (AC) = $680,000. Based on this data, what is the status of the project?
- Behind schedule and over budget (Correct answer)
- Ahead of schedule and under budget
- Behind schedule and under budget
- Ahead of schedule and over budget
Correct answer: Behind schedule and over budget
To determine the project's status, we calculate the Schedule Performance Index (SPI) and the Cost Performance Index (CPI). The formulas are SPI = EV / PV and CPI = EV / AC. In this case, SPI = $650,000 / $700,000 = 0.93, and CPI = $650,000 / $680,000 = 0.96. Since both the SPI and CPI are less than 1, the project is behind schedule and over budget.
Question 2: A CCM is managing a complex high-rise project where the delivery of a custom curtain wall system is a critical activity. The project schedule is extremely tight, and the owner has emphasized that the completion date cannot be extended. To manage the workforce for the interior fit-out, which of the following schedule optimization techniques would be most appropriate if resource conflicts arise?
- Crashing the schedule
- Fast-tracking
- Resource smoothing (Correct answer)
- Resource leveling
Correct answer: Resource smoothing
Resource smoothing is the ideal technique when the project completion date is a fixed constraint. It adjusts activities within their available float to optimize resource usage and avoid peaks and troughs, without affecting the critical path or the project's end date. Resource leveling, conversely, resolves resource over-allocations by delaying tasks, which can extend the project duration. Crashing and fast-tracking are techniques to shorten the schedule, not primarily for managing resource allocation within a fixed timeline.
Question 3: During the pre-construction phase, a Construction Manager is preparing a budget for a new elementary school. The design is approximately 30% complete, providing a good basis for a detailed estimate. According to the AACE International Recommended Practice, which class of cost estimate is most appropriate to develop at this stage for budget authorization?
- Class 5 (Order of Magnitude)
- Class 1 (Definitive)
- Class 4 (Feasibility)
- Class 3 (Budgetary/Control) (Correct answer)
Correct answer: Class 3 (Budgetary/Control)
A Class 3 estimate is developed when the project design is between 10% and 40% complete. It is used for budget authorization and establishing a baseline for control. Class 5 and 4 estimates are prepared earlier with less design detail, while a Class 1 estimate is prepared with fully developed construction documents.
Question 4: In Critical Path Method (CPM) scheduling, what does 'total float' (or 'total slack') for an activity represent?
- The amount of time an activity can be delayed without affecting the early start of its immediate successor.
- The total duration of the project's longest path.
- The amount of time an activity can be delayed without delaying the entire project's completion date. (Correct answer)
- The amount of time an activity was actually delayed compared to its planned start date.
Correct answer: The amount of time an activity can be delayed without delaying the entire project's completion date.
Total float is the maximum amount of time that an activity can be delayed from its early start date without delaying the entire project's finish date. Activities on the critical path have zero total float. Free float, on the other hand, is the time an activity can be delayed without impacting the early start of the next activity.
Question 5: A Construction Manager has included a line item in the project budget for potential price increases in structural steel, a risk that has been identified in the project's risk register. This budgeted amount falls under the control of the project manager to address this specific, foreseeable risk. This amount is best described as:
- Management Reserve
- Contingency Reserve (Correct answer)
- Escalation Clause
- Profit Margin
Correct answer: Contingency Reserve
A contingency reserve is a budget allocation for identified risks, or 'known unknowns,' that may or may not occur. Since the potential for steel price increases is an identified risk, the funds set aside for it are a contingency reserve, which is typically managed by the project manager. A management reserve is for 'unknown unknowns' and is controlled by senior management, not the project manager.
Question 6: A contractor submits a formal request to the Construction Manager for additional payment and a time extension due to owner-directed changes to the HVAC system design. Which of the following documents is the formal mechanism for authorizing these adjustments to the contract value and schedule?
- Request for Information (RFI)
- Submittal
- Change Order (Correct answer)
- Punch List
Correct answer: Change Order
A change order is a formal document that modifies the original construction contract by altering the scope of work, cost, and/or schedule. It serves as the official agreement between the owner and contractor for the requested changes. An RFI is used to clarify information, a submittal provides specific material or equipment data for approval, and a punch list identifies items for completion near the end of the project.
CCM Cost and Time Management Questions and Answers
A construction project's performance is being tracked using Earned Value Management (EVM).
At the end of a reporting period, the following data is available: Budget at Completion (BAC) = $1,500,000, Planned Value (PV) = $700,000, Earned Value (EV) = $650,000, and Actual Cost (AC) = $680,000.
Based on this data, what is the status of the project?