PSP Exam Dumps - Planning & Scheduling Professional (PSP) Exam

ï‚· Impact of Overrun:

Drafting (Activity C) and manufacturing (Activity D) are critical path activities.

A 5-day overrun in drafting consumes all available time for manufacturing.

Therefore, manufacturing cannot be delayed without affecting the release of the product.

ï‚· Verification with PSP Guidelines:

The PSP Study Guide specifies that critical path activities have zero float, so delays propagate directly to the project finish (Ref: PSP Study Guide, Chapter 2A: Critical Path and Float).

The number of workdays between two milestones, such as Product Testing and Product Available, is calculated by considering the activity durations, dependencies, and any calendar constraints (PSP Study Guide, Subchapter 2.2.3, "Durations"). If the activities are continuous and there are no interruptions such as holidays, the total duration would sum to 100 days based on the provided schedule.

ï‚· Understanding the Problem:

The question asks which risk cannot be estimated using only a resource-loaded schedule.

A resource-loaded schedule contains detailed information about activities, resources (labor, materials, equipment), and their associated costs but does not provide external information unrelated to project resources.

ï‚· Analysis of Each Option:

A. Delay due to SDOT's other projects:

This risk depends on external factors beyond the control or visibility of the resource-loaded schedule, such as project interactions, priorities, or resource allocation managed by SDOT (the State Department of Transportation).

A resource-loaded schedule cannot estimate this delay, as it does not account for external dependencies or priorities outside the project's scope.

This is the correct answer.

B. Delay due to labor shortage:

A resource-loaded schedule tracks labor availability and allocation. By analyzing resource constraints, it can estimate potential delays due to labor shortages.

This risk can be estimated using the schedule.

C. Liquidated damages on the SDOT contract:

Liquidated damages are linked to project delays. A resource-loaded schedule can estimate the delay impact and calculate potential damages based on contract terms.

This risk can be estimated.

D. Cost overruns due to cement shortage:

Cement shortages directly affect the material resource allocations in the schedule. A resource-loaded schedule can estimate cost overruns by analyzing material usage and constraints.

This risk can be estimated.

ï‚· Final Answer and Justification:

Option A is correct because a resource-loaded schedule cannot consider or predict delays caused by external projects managed by other entities like SDOT.

All other risks relate to project resources or scheduling, which can be analyzed using a resource-loaded schedule.

ï‚· Study Guide Reference:

Refer to the PSP Certification Study Guide, Chapter 2 – Scheduling, sections on Schedule Maintenance and Risk Analysis (p. 209), and Resource-Constrained Scheduling (p. 163).

AACE Recommended Practice 57R-09: "Integrated Cost and Schedule Risk Analysis" provides additional insights into risks measurable through schedules.

ï‚· Late Finish Analysis for Activity C (Develop Plans and Specs):

Activity C duration is 5 months, starting after Activity A (3 months).

Late finish = Early start of successor (Activity E) = 10 months.

ï‚· Cross-Verification:

Based on backward pass calculations, Activity C must end by month 10 to not delay its successor.

ï‚· Verification with PSP Guidelines:

Late finish values are calculated during backward pass (Ref: PSP Study Guide, Chapter 2A: Backward Pass and Float Calculations).