* 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.