AABC TAB Talk: Mastering Stairwell Pressurization A Tab Centered Approach

Originally Aired: 12/10/25 Stairwell pressurization systems are a critical life safety feature designed to maintain smoke-free egress paths during fire emergencies. This session explores the testing and balancing (TAB) process for these systems in accordance with NFPA 92 and NFPA 101. Attendees will examine procedures for evaluating fan performance, verifying relief damper operation, and conducting differential pressure testing across multiple floors, including smoke evacuation under alarm conditions. Through detailed discussion of fan curve analysis, airflow measurement, door force testing, and integrated alarm sequence verification, participants will learn practical steps for ensuring code-compliant operation. Real-world project examples will illustrate coordination challenges, system readiness checks, and diagnostic methods to resolve field issues efficiently. By the end of the session, attendees will be equipped with the tools to validate system performance, enhance communication with design teams, and deliver safe, functional results under real-world conditions. Learning Objectives 1. Identify the relevant NFPA 92 and NFPA 101 requirements governing stairwell pressurization system design, testing, and documentation. 2. Plan and execute a systematic TAB procedure for stairwell pressurization, including airflow verification, pressure measurements, and door force testing. 3. Diagnose and resolve common performance and coordination issues encountered during field testing, such as improper fan sizing or relief damper malfunction. 4. Apply lessons learned from real-world projects to improve commissioning outcomes, communication among stakeholders, and long-term system reliability. Sponsored by: Integra Testing At Integra, we are building national reach with a commitment to local roots and high-touch experiences. Leveraging our extensive national testing network of trained professionals, we ensure facilities are operating with safety, compliance, efficiency and performance in mind. We are proud of our: Over 500 trained industry professional Industry-related certifications and accreditations from the most respected certifying bodies in the built environment State-of-the art equipment Proven testing procedures Results backed by warranty guarantee We collaborate with design professionals, building owners, and facility engineers with a goal to both identify issues but also bring future-proof solutions to maintain operational integrity and regulatory compliance.