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What day would Activity C complete if the duration of Activity B was reduced to zero?
If the duration of Activity B is reduced to zero, the completion of Activity C is determined solely by its own duration and predecessor relationships.
Without knowing the explicit network logic, it is inferred that reducing Activity B to zero does not affect Activity C's finish on Day 50, as its relationship with other activities remains intact.
Reference: PSP Study Guide, Section 2.2.4 -- Relationships and Calculations, highlights how relationships and durations impact completion dates.
Which of the following is not an internal stakeholder?
Which of the following are NOT normally included in the project scope statement, either directly or by reference?
The Project Scope Statement typically includes:
Project objectives.
Justification.
Deliverables.
However, the contract between the contractor and owner is not included directly in the scope statement. Instead, it serves as a separate legal document governing the project's terms and conditions. This distinction is clear in project scope management practices discussed in the PSP materials.
Using the "normal" schedule, given Activity 3001 and the relationship with Activity 4001, what is indicated?
Analyze the Relationship Details: The table shows that Activity 3001 ('Excavation, Dam Site') and Activity 4001 ('Excavation, Spillway') have a Start-to-Start (SS) relationship with a lag of 15 days. A Start-to-Start relationship indicates that the successor activity (4001) can only start after a specified lag period once the predecessor activity (3001) begins.
Understand the Concept of Lag: In scheduling terminology, lag refers to a delay or waiting period between the start (or finish) of one activity and the start (or finish) of a dependent activity. Here, the 15-day lag means that Activity 4001 will commence 15 days after Activity 3001 has started.
Interpret the Relationship: The SS relationship combined with a lag indicates that the two activities (3001 and 4001) are not starting exactly at the same time but are still overlapping or concurrent. This concurrency happens after the lag period elapses.
Verify PSP Study Guide and Relevant Terminology: According to AACE International's Recommended Practices and the PSP Certification Study Guide:
Start-to-Start relationships are widely used to model overlapping work in schedules where one activity can start before its predecessor is fully complete (PSP Study Guide, Chapter on Scheduling Relationships and Constraints).
Lags provide flexibility to model realistic conditions where tasks start partially overlapping or with delays (PSP Study Guide, Section 2.2.4 Relationships).
Cross-Check the Answer Options:
Option A (Correct): Matches the described logic -- 'These activities are concurrent with Activity 4001 starting 15 days after the start of Activity 3001.'
Option B: Incorrect -- Lag is applied to the successor activity, meaning 4001 cannot start earlier than 3001.
Option C: Incorrect -- This relationship (SS with a lag) indicates concurrency, not series.
Option D: Incorrect -- Though concurrent, the lag makes the start times offset by 15 days, so they do not start at the same time.
PSP Study Guide (2019), Chapter 2A -- Schedule Development, Section 2.2.4 -- Relationships.
AACE International Recommended Practices, RP 10S-90, 'Cost Engineering Terminology.'
Total Cost Management Framework, Concepts of Activity Relationships and Scheduling Dependencies.
Determine the correct formula and date for the late start for Activity 9001.
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.
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.
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Exam domains verified against: Official AACE International AACE-PSP exam guide, last checked September 2026.
Planning data, inputs, constraints, and deliverables form the foundation for schedule development. This section tests understanding of how to identify, organize, and document the baseline information required before creating a project network or timeline.
Real-world network calculations and critical path analysis under time pressure. Candidates work through forward and backward pass calculations, float determination, and identify how constraint changes ripple through the schedule.
Input information from planning, building schedules, maintaining, and managing schedules. Candidates update, predict, and examine schedules of related projects, applying scheduling concepts to multi-project environments and resource constraints.
One memo writing assignment based on a provided scenario. Candidates demonstrate the ability to communicate scheduling findings, recommendations, or issues in a professional written format to project stakeholders.
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