1.6 Constructability Methods and Value Engineering

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

1.6 Constructability Methods and Value Engineering

Key Takeaways Explain This Topic AI

Constructability integrates construction knowledge into planning so the design, procurement strategy, and sequence can be executed safely and efficiently.

Value engineering improves required function relative to life-cycle cost and risk; it is not indiscriminate scope cutting.

Alternatives should be compared on function, time, cost, safety, quality, operability, procurement, and risk.

Accepted changes must flow through scope, WBS, estimate, logic, resources, risk, and baseline control together. Last updated: October 2026

1.6 Constructability Methods and Value Engineering Constructability brings practical execution knowledge into design and planning. The objective is not merely to make drawings easier for a contractor; it is to improve safety, access, sequence, procurement, temporary works, testing, turnover, and overall delivery. Constructability questions Review the plan through the full lifecycle: Can crews and equipment reach each workfront? Are lifting, excavation, shoring, scaffolding, laydown, and temporary utilities planned? Does design release support procurement and field sequence? Are shutdowns, isolations, tie-ins, and permits coordinated? Can trades work concurrently without unsafe congestion? Are testing and commissioning boundaries reflected in construction packages? Can the operator accept and use partial turnovers? The schedule should model the chosen method, not an abstract list of deliverables. Modularization, prefabrication, off-site assembly, alternate access, and phased turnover can change activities, logic, calendars, resources, and risk. Timing of reviews Constructability is most valuable before design choices become expensive to change, but review continues through execution. A conceptual review may compare site layouts and delivery approaches. A baseline review tests detailed work packaging and sequence. Update reviews examine whether actual field conditions still support the plan. Value engineering Value engineering (VE) is a structured search for ways to achieve required functions with better overall value. Value is not simply lowest first cost. An option that saves procurement cost but adds commissioning risk or delays revenue may reduce total value. A VE study typically: defines required functions and performance criteria; identifies cost, time, risk, or complexity drivers; generates alternatives without premature judgment; evaluates feasible options; and recommends and implements the selected change through control processes. Compare alternatives consistently

Criterion Questions Function Does the alternative meet required performance? Schedule What design, procurement, construction, and turnover dates change? Cost What are capital, operating, and maintenance effects? Safety/quality Does it create new hazards or acceptance risks? Resources Are skills, equipment, workfronts, and supervision available? Risk Does it transfer, reduce, or introduce uncertainty? Operability Can the asset be tested, maintained, and used as intended? Worked planning example A project can either field-assemble pipe racks or use transportable modules. Modularization may reduce site labor and congestion but require earlier design freeze, larger lifts, transport permits, fabrication-yard capacity, and module interface control. The planner compares the entire chain rather than shortening only the field-installation activity. The accepted modular option might add early model reviews, vendor engineering, fabrication, transport studies, heavy-lift preparation, and module setting while deleting many stick-build activities. Its schedule benefit depends on whether those new paths finish before the field work they replace. Integration and change control An accepted constructability or VE change can affect: scope statement and acceptance criteria; WBS and work packages; cost estimate and cash flow; activity list, relationships, and durations; resource loading and calendars; permits, procurement, and stakeholders; risk register and contingency; and contractual milestones or baseline. Updating only the bars creates an internally inconsistent plan. Use a controlled change with traceable approvals and preserve the prior baseline. Exam distinction Constructability asks whether and how the plan can be executed. Value engineering asks how required functions can be delivered with improved value. They overlap, but neither means arbitrary duration compression or removal of necessary scope. Applied review: distinguish feasibility from improvement A constructability review asks whether the proposed sequence can be executed safely and physically with the available access, temporary works, permits, inspections, work faces, labor, equipment, and material flow. The planner should involve field supervision and relevant specialists early enough that the schedule can change before commitments harden. Typical findings include an impossible crane path, too few turnover zones, a commissioning sequence that lacks energization prerequisites, or concurrent crews competing for the same workspace. Value engineering has a different purpose: improve value while preserving required function and performance. A proposal may change design, material, fabrication location, packaging, construction method, or sequence. Its schedule effect must include design and approval time, procurement lead time, transition work, rework risk, and downstream testing—not only the apparent field-duration saving. The lowest initial cost or shortest isolated activity is not automatically the best whole-project value. For either review, compare alternatives on a common basis. State assumptions, affected activities, resource and access needs, cost and time effects, risks, and decision deadline. Model accepted changes through controlled schedule change procedures. Rejecting an option can be a sound result when its approval delay, safety risk, quality exposure, or interface disruption outweighs its benefit. Exam scenarios often reward the option that validates feasibility and total project effect before changing the baseline.

Test Your Knowledge

Which statement best describes value engineering?

A structured comparison of ways to deliver required functions with better life-cycle value

Automatic deletion of the highest-cost scope item

Reducing every activity duration by ten percent

Moving contingency into hidden lags Check Answer Need a hint? AI

Test Your Knowledge

A modularization proposal shortens field erection but requires earlier design freeze, transport permits, and heavy lifts. What should the planner do?

Count only the shorter field activity.

Model and compare the complete design-procurement-transport-installation chain and its risks.

Reject modularization because it adds activities.

Replace the added interfaces with a finish constraint. Check Answer Need a hint? AI

Sections you finish are checked off in the contents.

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