Pass the AACE International Professional Level Certifications PSP Questions and answers with ValidTests

To calculate the completion day for Activity C:

Reduce Activity A's duration by five days.

Recalculate dependent activities' start and finish times using forward pass logic (PSP Study Guide, Subchapter 2.2.4, "Relationships").

Sum up the adjusted durations to determine the completion day for Activity C.

This aligns with the logic of schedule adjustments and dependencies as outlined in the PSP Study Guide.

Understand the Relationship Between G and H:

The time-scaled diagram shows that Activity H starts immediately after the finish of Activity G.

This is indicative of a Finish-to-Start (FS) relationship.

Cross-Verification:

Option A: Incorrect. The relationship is visible in the diagram.

Option B: Incorrect. There is no evidence of a Start-to-Start (SS) relationship.

Option D: Incorrect. Finish-to-Finish (FF) is not applicable here.

Option C: Correct. FS relationship matches the network logic.

 Understanding the Cycle Time:

A cycle time includes all the operations needed for one complete lift:

Sling Up: 5 minutes

Hoist Up: 4 minutes

Discharge: 3 minutes

Clear Unload Area: 3 minutes

Hoist Down: 2 minutes

 Calculate Total Cycle Time:

Cycle Time = 5 + 4 + 3 + 3 + 2 = 17 minutes.

 Cross-Verification:

Option A (5 minutes): Incorrect. Excludes operations.

Option C (14 minutes): Incorrect. Underestimates.

Option D (6 minutes): Incorrect. Miscalculation.

Option B (17 minutes): Correct.

Scheduling Professional Study Guide and Documents References:The Budgeted Cost of Work Scheduled (BCWS) is the planned value of all tasks scheduled during a specific period. It is a measure used in earned value management to assess schedule adherence.

Option A defines Budgeted Cost of Work Performed (BCWP).

Option B defines the total project budget (BAC).

Option C defines the expected total cost, which is Estimate at Completion (EAC).

This answer is consistent with earned value methodologies and their application in project controls​​.

 Resource Leveling:

Resource leveling adjusts start and finish dates of activities to resolve resource conflicts or constraints, balancing availability and demand.

In construction projects, breaks in continuity of work for subcontractors can result in increased costs due to remobilization and demobilization.

 PSP Study Guide References:

The PSP guide explains that resource leveling must be carefully analyzed to avoid disruptions in work continuity​.

 Conclusion: The correct answer is A, as the scheduler must account for potential cost implications of resource leveling on subcontractors.

Activity Details (9001 - "Spillway - Concrete"):

Duration: 175 days in the Normal schedule.

To calculate Late Start (LS), the Late Finish (LF) is required. LS is calculated by subtracting the activity's duration from the LF.

Formula for Late Start (LS):LS = LF.9001 - Dur.9001.

Date Calculation:

Late Finish (LF.9001) = 11-20-02 (given or derived).

Apply the formula:LS.9001 = LF.9001 - Dur.9001= 11-20-02 - 175 days.

Cross-Verification of Dates:

After subtracting 175 days, LS.9001 = 11-20-02.

Cross-Verification with Answer Options:

Option A: Incorrect. EF (Early Finish) is not needed for this calculation.

Option B: Incorrect. Uses LS and Dur incorrectly without connecting to LF.

Option C: Incorrect. Data provided is sufficient.

Option D: Correct. Matches both the formula and the date calculation.

References:

PSP Study Guide (2019), Section 2A – Schedule Development, Subsection on Backward Pass Calculations.

AACE Recommended Practices, RP 10S-90, discussing Late Start and Late Finish calculations.

 Hammock Activities (2001–2004):

Activity 2001 ("River Diversion Stage 1"): Duration = 92 days.

Activity 2002: Starts immediately after 2001, duration = 38 days.

Activity 2003: Starts immediately after 2002, duration = 15 days.

Activity 2004: Starts immediately after 2003, duration = 38 days.

 Calculate the Duration:

Total duration = 92 + 38 + 15 + 38 = 183 days.

 Cross-Verification with Answer Options:

Option A: Incorrect. Underestimates.

Option C: Incorrect. Overestimates.

Option D: Incorrect. Overestimates.

Option B: Correct. Matches the calculated duration.

 Late Finish (LF) is calculated by adjusting the Late Start (LS) of the subsequent activity (2003) by the lag value.

 The formula, LS of 2003 - 1 day, aligns with CPM principles where the predecessor's LF must occur before the successor starts.

 The date calculation, considering lags and dependencies, results in 06 Oct 2021.

 References: PSP Study Guide, Section 2.2.4 – Relationships and Calculations, Appendix A – Sample Calculations for LF and LS relationships.

 The column volume is 2,000 cubic feet (56.64 cubic meters), and each lift using a 1.75 cubic yard bucket corresponds to: Lifts required=Column volume (cubic yards)Bucket capacity (cubic yards)\text{Lifts required} = \frac{\text{Column volume (cubic yards)}}{\text{Bucket capacity (cubic yards)}} Lifts required=Bucket capacity (cubic yards)Column volume (cubic yards)​ Convert 56.64 cubic meters to cubic yards: 56.64×1.308=74.1456.64 \times 1.308 = 74.1456.64×1.308=74.14. Lifts required=74.141.75≈133 lifts.\text{Lifts required} = \frac{74.14}{1.75} \approx 133 \text{ lifts}.Lifts required=1.7574.14​≈133 lifts.

 References: PSP Study Guide, Section 1.3.7 – Resource Calculations and Allocation, which emphasizes unit conversions and resource management.