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Answer : A

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 Reference:

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.

Answer : A

Hammock Cost for Activities 2001--2004:

Activity 2001: Cost = $150,000.

Activity 2002: Cost = $25,000.

Activity 2003: Cost = $20,000.

Activity 2004: Cost = $96,000.

Calculate Total Cost:

Total cost = $150,000 + $25,000 + $20,000 + $96,000 = $271,000.

Cross-Verification with Answer Options:

Option B: Incorrect. Overstates cost.

Option C: Incorrect. Understates cost.

Option D: Incorrect. Overstates cost.

Option A: Correct. Matches the calculated cost.

PSP Study Guide (2019), Section on Summary and Hammock Activities.

AACE Recommended Practices, RP 10S-90.

Answer : D

Activity Overview and Dependencies:

From the provided schedule data, Activity 3001 (Excavation, Dam Site) starts with multiple logical relationships:

Successor activities include SS (Start-to-Start) and FS (Finish-to-Start) dependencies with other tasks.

Specifically, these relationships link 3001 to 4001 (Excavation, Spillway) and 5001 (Drill and Grout, Dam Site).

Normal Schedule Context:

Excluding Activity 1000, we focus on Activity 3001's logical relationships to determine which activities are concurrent.

In the 'Normal Schedule', Activity 3001 has a duration of 152 days and overlaps with Activities 4001 (152 days) and 5001 (102 days). Both activities share similar dependencies and durations with Activity 3001, making them concurrent.

Schedule Dependency Analysis:

Concurrent activities are identified by overlapping durations and logical relationships that align their schedules.

Activity 4001 is linked via SS and FF dependencies, ensuring simultaneous start and finish points.

Activity 5001 starts as 3001 progresses (SS and FS dependencies).

Final Answer Validation:

Other listed activities, such as 2003 and 7001 (Answer A) or 2004 (Answer B), are not logically or temporally concurrent based on their dependencies and durations.

Only 4001 and 5001 have concurrent schedules aligning with Activity 3001.

Study Guide Reference:

Planning and Scheduling Professional Certification Study Guide, Chapter 2 -- Scheduling, sections on 'Dependencies and Constraints' (p. 157) and 'Sequencing Activities' (p. 151).

For further insights into identifying concurrency using logical relationships, refer to AACE's Recommended Practice 10S-90: Cost Engineering Terminology.

This structured approach ensures alignment with PSP standards and principles in evaluating concurrent activities in complex schedules.

Answer : C

Answer : C

Activities not on the critical path are those with positive float, meaning they can be delayed without affecting the overall project completion time. The determination of such activities requires performing a forward and backward pass calculation as per CPM (Critical Path Method) analysis principles (PSP Study Guide, Section 2.2.4, 'Relationships').

For example:

Identify the critical path by analyzing total float values (typically, critical path activities have zero total float).

Exclude activities that do not fall on the critical path.