Study guide
11.2 Commissioning: Verifying the Building Meets EBD Intent Before Occupancy
Evidence-Based Design Accreditation EDAC
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1 Chapter 1: Foundations of Evidence-Based Design
1.1 Definition, History & Core Principles of Evidence-Based Design 1.2 Comparing Evidence-Based Design (EBD) and Evidence-Based Medicine (EBM) 1.3 The Eight-Step EBD Process Framework 1.4 Who Benefits from EBD & Which Outcomes It Can Influence
2 Chapter 2: Healthcare Context, Systems Thinking & Leadership
2.1 Macro Healthcare Trends, Demographics & Economic Drivers 2.2 The Healthcare Delivery System: Care Settings, Hospital Types & Networks 2.3 The Systems-Based Approach (Formerly the Environment of Care) 2.4 Organizational Culture, Culture Change & Cross-Cultural Design 2.5 Healthcare Stakeholders, Facility Users & Governance Roles 2.6 Executive Leadership, Project Lifecycle Changes & Succession Planning
3 Chapter 3: Healing Environments, Theory & the EDAC Credential
3.1 Healing Environments, Psycho-Neuro-Immunology & Stress Reduction 3.2 Positive Distractions, Biophilia & Roger Ulrich Landmark Research 3.3 Integrative Medicine & Designing Healing and Therapeutic Environments 3.4 Healthcare Workplace Design, Staff Retention & Fatigue Reduction 3.5 Professional Responsibility, Healthcare Outcomes & the EDAC Credential
4 Chapter 4: Research Fundamentals & Evidence Sources
4.1 The Role of Research in Healthcare Architecture & Design 4.2 Types of Evidence: Internal vs. External Evidence 4.3 Literature Searches, Academic Databases & Search Strategies 4.4 Screening, Extracting & Synthesizing Healthcare Design Literature
5 Chapter 5: Evidence Hierarchies & Critical Appraisal
5.1 The Hierarchy of Evidence: Systematic Reviews to Expert Opinion 5.2 Internal Validity, External Validity & Reliability in EBD 5.3 Research Bias, Confounding Factors & Threat Mitigation 5.4 Step 3: The Critical Interpretation & Appraisal Process
6 Chapter 6: Research Methodologies, Data Analysis & the Research Plan
6.1 Quantitative Research Designs, Metrics & Statistical Significance 6.2 Qualitative Methods, Behavioral Observation & Spatial Mapping 6.3 Mixed Methods, Data Triangulation & Research-to-Design Translation 6.4 The Research Process: Research Questions, Research Plans, Ethics & Reporting
7 Chapter 7: Project Setup & Predesign
7.1 Project Setup: Early Capital Planning, Context & Culture, and the EBD Budget 7.2 Step 1: Defining Evidence-Based Vision, Goals & Objectives 7.3 Participative Design, Charrettes & Advisory Councils 7.4 Functional Programming, Adjacencies & Flow Analysis
8 Chapter 8: Hypotheses, Baselines & the Business Case
8.1 Step 5: Formulating Rigorous, Testable EBD Hypotheses 8.2 Step 6: Planning & Collecting Baseline Performance Measures 8.3 The Business Case for EBD: Capital Costs vs. Operational Life-Cycle 8.4 Prioritizing Design Interventions Under Budget Constraints
9 Chapter 9: Designing for Safety: Risk Assessment, Infection, Falls & Medication Safety
9.1 Attributes of a Safe Environment & the Safety Risk Assessment 9.2 Infection Control, Single-Bed Rooms & Hand-Hygiene Design 9.3 Fall Prevention, Same-Handed Rooms & Bathroom Adjacencies 9.4 Medication Safety, Decentralized Nursing Stations & Workflow
10 Chapter 10: Design Phase: Environmental Factors, Concepts & Mock-Ups
10.1 Healthcare Acoustics, Noise Reduction & Sound Absorption 10.2 Circadian Lighting, Natural Daylight & Visual Performance 10.3 Step 4: Creating and Innovating Evidence-Based Design Concepts 10.4 Step 4 Prototyping: Mock-Ups, Simulation & Iterative Evaluation
11 Chapter 11: Construction, Commissioning & Activation
11.1 Step 7: Monitoring Implementation Fidelity & Guarding EBD Intent 11.2 Commissioning: Verifying the Building Meets EBD Intent Before Occupancy 11.3 Activation Readiness, Transition Planning & Finalizing the POE Research Plan
12 Chapter 12: Post-Occupancy Evaluation & Knowledge Sharing
12.1 Step 8: Post-Occupancy Evaluation Methodology & Timing 12.2 Executing the POE Research Plan, Independent Evaluation & Finalizing the Business Case 12.3 Analyzing POE Data, Isolating Environmental Effects & Mixed Outcomes 12.4 Knowledge Dissemination, Peer Review & Continuous Improvement
11.2 Commissioning: Verifying the Building Meets EBD Intent Before Occupancy
Key Takeaways Explain This Topic AI
CHD's exam content outline says the commissioned building should be verified against EBD intent before activation or occupancy, not only against code and contract checklists.
The outline's verification list covers the safety risk assessment, patient, staff, and user safety, mechanical, plumbing, and fire protection systems, lighting systems and controls, acoustical design, operational and logistics mapping, process mapping, and technology integration.
Commissioning confirms that the design features named in EBD hypotheses were actually delivered, so post-occupancy results can be interpreted.
ASHRAE Standard 170 airborne infection isolation rooms require negative pressure and all air exhausted outdoors, while protective environment rooms require positive pressure and HEPA-filtered supply air.
Process, logistics, and technology checks confirm that supply, waste, transport, nurse call, and alarm workflows work together as the design intended.
Last updated: September 2026
Commissioning: Verifying the Building Meets EBD Intent Before Occupancy
EDAC Core Concept: Domain 5 of CHD's current Detailed Content Outline asks candidates to describe why it is important to verify that the commissioned building complies with the evidence-based design intent prior to building activation or occupancy . Commissioning in an EBD project is not only a technical closeout step—it is how the team confirms that the design variables in its hypotheses were actually built and work as intended.
Why Verify EBD Intent Before Occupancy
Building commissioning (Cx) is a quality-assurance process, typically led by a commissioning authority working for the owner, that verifies building systems are installed and perform according to the Owner's Project Requirements (OPR) and the Basis of Design (BOD) . In an EBD project, the OPR should include the evidence-based goals and the performance criteria behind each hypothesis.
Verification before occupancy matters for three reasons:
Safety — defects in pressure relationships, alarms, or lighting controls can harm patients and staff on opening day.
Validity of the research — if a hypothesized feature (for example, sound-absorbing ceilings or tunable lighting) was not delivered or does not perform, the post-occupancy evaluation cannot fairly test the hypothesis.
Cost — correcting problems before patients arrive is far cheaper and less disruptive than retrofitting occupied rooms. Owner's Project Requirements (EBD goals & performance criteria)
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- Basis of Design ──► Construction ──► Commissioning verifies performance
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- Hypotheses name the design variables ──► POE can test outcomes with confidence
- The Outline's Verification Checklist
Outline Item What to Verify Before Occupancy
Safety risk assessment Mitigations identified in the SRA (infection control, patient handling, falls, medication safety, behavioral health, security) were built as designed
Patient, staff, and user safety Handrails, grab bars, clearances, ligature-resistant details, door hardware, and emergency access work in real use
Mechanical, plumbing, and fire protection systems Air changes, pressure relationships, filtration, water temperatures and flushing, sprinklers and alarms
Lighting systems and controls Illuminance levels, tunable-lighting schedules, patient controls, night lighting
Acoustical design Sound isolation, background noise, reverberation, and any sound masking meet project criteria
Operational and logistics mapping Supply, pharmacy, linen, food, waste, and patient transport routes function as planned
Process mapping Future-state clinical workflows can be carried out in the finished spaces
Technology integration Nurse call, alarm routing to staff devices, location systems, and point-of-care computing work together
Ventilation and Isolation Performance
ANSI/ASHRAE/ASHE Standard 170 sets ventilation requirements for healthcare spaces; the applicable edition is set by the jurisdiction and project. Key relationships to verify:
Metric Airborne Infection Isolation (AII) Room Protective Environment (PE) Room Operating Room
Pressure Negative to adjacent spaces (at least 0.01 in. w.g., about 2.5 Pa) Positive (at least 0.01 in. w.g.) Positive (at least 0.01 in. w.g.)
- Minimum total air changes 12 per hour 12 per hour 20 per hour
- Minimum outdoor air changes 2 per hour 2 per hour 4 per hour
Exhaust / filtration All room air exhausted directly outdoors HEPA-filtered supply air MERV 16 final filters in the 2021 edition; terminal HEPA for ORs designated for orthopedic, transplant, neurosurgery, or burn procedures
Commissioning agents measure supply, return, and exhaust airflow; verify pressure relationships with doors closed and during normal operation; test room pressure monitors and alarms; and, where HEPA filters are installed at the terminal, perform leak testing. Standard patient-room air-change requirements vary by edition, so verify against the edition adopted for the project.
- Acoustics, Lighting, and Water Systems
- Acoustical Design
Acoustic commissioning checks the finished building against the project's acoustic criteria, which are often based on the FGI Guidelines' acoustic design tables:
Sound isolation — field tests of partitions between patient rooms and between rooms and corridors confirm that walls, doors, and ceiling details deliver the specified isolation and support speech privacy.
Background noise — with equipment off, HVAC noise is measured; patient rooms are commonly designed for low background levels (for example, around NC 30–35).
Reverberation — rooms with sound-absorbing ceilings are checked against the short reverberation-time targets set by the acoustic consultant.
Sound masking — where used in open or public areas, the system is tuned to a uniform, unobtrusive level (commonly in the low-to-mid 40s dBA).
Lighting Systems and Controls
Task and ambient lighting — measured against the project's illuminance criteria, typically based on Illuminating Engineering Society recommendations.
Circadian schedules — for tunable systems, confirm that the programmed daytime and evening settings deliver the intended vertical light at the eye; expert recommendations (Brown et al., 2022) call for at least 250 lux melanopic EDI by day and no more than 10 lux in the evening.
Controls and night lighting — patients can operate their controls, and low-level path lighting works without glare.
Water Systems
Healthcare facilities are expected to maintain a water management program to control Legionella and other waterborne pathogens (ASHRAE Standard 188 sets the framework, and CMS expects programs in healthcare facilities). Before occupancy, commissioning and infection prevention confirm that the program's control limits can be met—for example, hot-water storage temperatures around 140°F (60°C) , adequate return temperatures, disinfection and flushing of the new system, and point-of-use thermostatic mixing valves set to prevent scalding.
Process, Logistics, and Technology Integration
Physical systems can pass every test while workflows still fail. The outline therefore includes operational and logistics mapping , process mapping , and technology integration :
Logistics walk-throughs follow a cart of supplies, a bag of linen, a meal tray, and a waste container from dock to room and back, confirming clean and soiled routes stay separate and elevators, corridors, and doors fit the carts.
Process maps of future-state workflows (admission, medication administration, patient transport, room turnover) are tested in the real spaces, not only on drawings.
Technology integration tests confirm that nurse call, alarm notifications to staff phones, location systems, and point-of-care devices work together in the rooms where they will be used.
Problems found here feed directly into activation planning and training (Section 11.3).
Exam Watch: High-Yield Traps & Pitfalls
Warning
Trap 1: Commissioning is only for HVAC. The outline's list includes safety, acoustics, lighting controls, logistics, processes, and technology.
Warning
Trap 2: Reversing isolation pressures. AII rooms are negative with air exhausted outdoors; PE rooms are positive with HEPA-filtered supply.
Warning
Trap 3: Skipping verification before POE. If EBD features were not delivered as designed, post-occupancy results cannot fairly test the hypotheses.