8.1 Delay Classification, Criticality, and Contract Questions

AACE Planning and Scheduling Professional PSP

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1 Chapter 0: Introduction & AACE PSP Exam Structure

0.1 Current AACE PSP Exam, Eligibility, and Certification Facts 0.2 Planning and Scheduling Professional Roles and Competencies 0.3 Cost Engineering and Scheduling Terminology per RP 10S-90

2 Chapter 1: Scope Definition & Planning Fundamentals

1.1 Work Breakdown Structure (WBS) Architecture & RP 33R-15 1.2 Organization & Resource Breakdown Structures (OBS, RBS, RAM) 1.3 Project Planning and Activity-Logic Development 1.4 Contract Requirements and Delivery Constraints 1.5 Stakeholder Identification, Needs, and Plan Review 1.6 Constructability Methods and Value Engineering 1.7 Resource Identification and Project Variables 1.8 Scope, Goals, Project Plan, and Phase Definition 1.9 Cost Breakdown Structure and Cost Estimate Development 1.10 Phase Relationships, Baseline Plan, Forecasts, and Risk/Recovery Planning

3 Chapter 2: Critical Path Method Mechanics & Network Logic

2.1 Activity Definition and Logic Relationships 2.2 Activity Durations, Productivity, and Work Calendars 2.3 Forward and Backward Pass Mathematical Mechanics 2.4 Float Calculations and Critical-Path Identification

4 Chapter 3: Advanced Network Techniques & Schedule Constraints

3.1 Schedule Constraints and Their Impact on Dates and Float 3.2 Advanced Logic Modeling: Ladders and Fragnets 3.3 Schedule Levels of Detail and Schedule Basis Documentation 3.4 Schedule Scope and Schedule Specification 3.5 Breakdown-Structure Relationships and the Cost Estimate Model 3.6 Stakeholder Feedback and Types of Schedules 3.7 Activities, Milestones, Schedule Quality, and Basis Documentation

5 Chapter 4: Resource Management & Leveling

4.1 Resource Planning, Allocation, and Histograms 4.2 Resource Leveling vs. Resource Smoothing 4.3 Cumulative Resource S-Curves & Productivity Tracking

6 Chapter 5: Baseline Management & Schedule Updating

5.1 Baseline Establishment, Forecasts, and Controlled Revision 5.2 Progress Measurement and Data Date Mechanics 5.3 Out-of-Sequence Logic: Progress Override vs. Retained Logic 5.4 Schedule Update Review and Quality Verification per RP 53R-06 5.5 Cost/Resource Management, Schedule Change, and Feedback 5.6 Acceleration and Recovery Scheduling per RP 54R-07 5.7 Control Schedules, Variance Analysis, Forecasts, and Management Summaries

7 Chapter 6: Schedule Risk Analysis & Monte Carlo Simulation

6.1 Schedule Risk Principles, Risk Drivers, and Three-Point Estimates 6.2 Monte Carlo Simulation, Criticality, Correlation, and Merge Effects 6.3 Risk Outputs, Confidence Dates, Sensitivity, and Contingency

8 Chapter 7: Earned Value & Earned Schedule Management

7.1 Earned Value Foundations: PV, EV, AC, and Variances 7.2 Traditional EV Performance Indices & Late-Project Quirks 7.3 Earned Schedule (ES) Theory, SV(t), and SPI(t) 7.4 Independent Schedule Forecasting & IEAC(t)

9 Chapter 8: Forensic Schedule Analysis & Delay Claims

8.1 Delay Classification, Criticality, and Contract Questions 8.2 RP 29R-03 Taxonomy, Data Validation, and Method Selection 8.3 TIA, Windowed Analysis, and Subtractive Models 8.4 Concurrency, Pacing, and Float: Technical Analysis Before Entitlement

10 Chapter 9: Executive Communication & Practical Scenario Applications

9.1 Official PSP Memo Writing Framework 9.2 Structured Technical Problem-Solving for PSP Scenarios 9.3 Current Exam Strategy and Core Calculation Review

Free exam prep AACE Planning and Scheduling Professional Practice Questions 100 questions Study Guide 48 topics

8.1 Delay Classification, Criticality, and Contract Questions

Key Takeaways Explain This Topic AI

Schedule analysis determines timing and criticality; contractual entitlement also depends on contract language, notice, causation, proof, and applicable law.

Excusable, compensable, and non-excusable are useful analytical labels but should not be assigned from the event name alone.

An event must affect the controlling path or another protected milestone before it supports a project time-extension calculation.

A noncritical event can consume float without moving completion, but disruption or direct-cost issues may require separate analysis.

Recommended Practices provide technical guidance and do not replace legal advice or the governing contract. Last updated: October 2026

8.1 Delay Classification, Criticality, and Contract Questions Delay analysis has two connected but distinct layers. The technical layer asks what happened to the schedule: when the event occurred, which activities it affected, whether it reached a controlling path, and how much milestone movement resulted. The contract layer asks who accepted the risk, what notice and proof are required, and what remedy is available. AACE RP 29R-03 focuses on technical forensic schedule analysis. It expressly says the selected method and implementation depend on the contract, facts, applicable law, and quality of contemporaneous documentation. It is not a legal rulebook and is not intended to establish a mandatory standard of practice. Classification framework

Analytical label General scheduling meaning Questions still requiring contract review Excusable, potentially compensable Event may support time and money Was the risk allocated to the other party? Was notice timely? Are claimed costs proven? Excusable, non-compensable Event may support time but not money Does the clause grant time? Is the event within the clause? Non-excusable Event may remain the performing party’s risk Are cure, acceleration, or damages provisions enforceable and satisfied? Concurrent Independent delays overlap and affect controlling work How does the contract and applicable law treat concurrency? The word potentially matters. An unknown subsurface condition may qualify under a differing-site-condition clause, but only after checking the clause’s type, the information represented in the contract, actual conditions, reliance, notice, and causal impact. The event name alone does not create an automatic entitlement. Event-to-impact workflow Define the event. Use dates and records rather than labels such as “owner delay.” Validate status. Confirm the data date, actual starts and finishes, remaining durations, calendars, and logic in the contemporaneous schedule. Identify affected activities. Tie the event to real work through records, not assumption. Test criticality. Determine whether the event delayed the controlling path, a contractual interim milestone, or only consumed float. Measure impact. Apply a method suited to the timing and available records. Check concurrency and mitigation. Identify independent delays and reasonable response actions. Apply the contract. Review risk allocation, notice, substantiation, change, and remedy clauses. Separate cost proof. A time impact does not by itself prove the amount or recoverability of cost. Float consumption Suppose an approval activity has 22 days of total float and an event delays it 12 days, with no separate protected milestone and no change to the controlling path. The straightforward schedule result is ten days of float remaining and no project-completion movement from that event at that update. That finding generally does not support twelve days of project time extension. It also does not prove that every possible cost claim is zero. A party might allege disruption, resequencing, or direct cost under a separate contract provision. Those allegations require their own causation and damage proof. Keep the schedule conclusion narrower than the legal conclusion. Cost formulas versus entitlement The Eichleay formula is associated with federal-contract claims for unabsorbed home-office overhead. Arithmetic can compute a formula amount from supplied figures, but entitlement depends on legal prerequisites and the governing forum. A PSP study problem may ask for the arithmetic; a professional report should label the result as a calculated amount before contractual and legal eligibility is determined. For billings of 9 million on the affected contract, 45 million total firm billings, 3 million home-office overhead, 600 performance days, and 30 assumed compensable days: allocable overhead = 9/45 × 3 million = 600,000; daily rate = 600,000 / 600 = 1,000; and formula amount = 1,000 × 30 = 30,000. The calculation is correct; calling 30,000 an automatic entitlement is not. Professional reporting Use language such as “the modeled event moved the forecast milestone by 12 days” and “potential entitlement is subject to Clause X, notice compliance, cost substantiation, and counsel’s review.” Avoid “the contractor is legally entitled” unless the decision-maker with authority has actually resolved those questions. That discipline is not evasive. It preserves the boundary between a scheduler’s technical opinion and a legal or contractual determination. Applied review: keep technical classification separate from entitlement A schedule analyst may classify an event by timing, affected work, apparent responsibility, and whether it influenced a controlling path. Entitlement is a broader conclusion that depends on contract language, notice, causation, mitigation, applicable law, and the complete factual record. Therefore a technically excusable event is not automatically compensable, and observed critical delay is not by itself a legal award. Build an event chronology from contemporaneous records, establish the accepted schedule and update history, test the relevant paths, and state limitations. Consider whether other events affected the same period and whether reasonable mitigation was available. Use neutral language such as “the analysis indicates” rather than claiming that a software result proves liability. AACE RP 29R-03 explicitly presents forensic schedule analysis as non-prescriptive guidance whose application depends on the facts, contract, law, and records. On the exam, favor answers that preserve that boundary, disclose assumptions, and route entitlement determinations to the authorized contractual or legal process.

Test Your Knowledge

A critical-path event involves an unexpected subsurface condition. What is the most defensible first conclusion?

It is automatically compensable under every construction contract.

It is automatically an act of God and never compensable.

Its time impact can be analyzed, while entitlement requires review of the contract, notice, facts, proof, and applicable law.

It cannot be analyzed until a court assigns liability. Check Answer Need a hint? AI

Test Your Knowledge

Using the stated Eichleay inputs, the formula produces 30,000. What does that arithmetic establish by itself?

Only the calculated formula amount; legal and contractual prerequisites still must be established.

Automatic recovery in every jurisdiction.

A mandatory 30-day extension of time.

Proof that no concurrent delay existed. Check Answer Need a hint? AI

Test Your Knowledge

An event consumes 12 days from an activity’s 22 days of float and does not move any protected milestone. What is the narrow schedule conclusion?

The project is delayed 22 days.

The activity has about 10 days of float remaining and the event did not move the tested milestone.

The affected party automatically recovers twelve days of overhead.

The baseline must be revised immediately. Check Answer Need a hint? AI

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