This webinar is presented by Scott Blackmon from RM Manifold Group and discusses the importance of stairwell pressurization systems in high-rise buildings to ensure safety during emergencies, particularly in the event of a fire. The session covers both the historical context that led to the development of these systems and the different methods available for achieving effective pressurization.
Scott begins by referencing major fire incidents, such as the 1980 MGM Grand fire and the more recent 2022 Bronx apartment fire, both of which resulted in numerous fatalities due to smoke inhalation rather than the fire itself. These tragedies underscore the critical role of stairwell pressurization in creating a safe environment for building occupants to escape during emergencies.
The webinar explains two primary methods of pressurization: passive and active systems. Passive systems are typically used in smaller buildings and rely on the stairwell doors to remain closed, preventing smoke from entering. However, active pressurization systems, which use fans, dampers, and controls to supply air and pressurize the stairwell, are required for larger buildings and high-rises.
NFPA (National Fire Protection Association) standards define two types of active pressurization systems: single-point and multi-point injection systems. Single-point systems, suitable for buildings up to 100 feet, introduce air into the stairwell from a single location. Multi-point injection systems, recommended by NFPA, supply air at multiple levels, ensuring even distribution of air pressure throughout the stairwell. This method is more effective for taller buildings, providing a safer, smoke-free escape route for occupants.
The presentation delves into the control systems for managing pressurization. Non-compensated systems use a single-speed fan that operates continuously, relying on the opening and closing of doors to regulate pressure. Compensated systems, which are more advanced, use variable-speed fans and sensors to adjust the airflow based on real-time conditions. RM Manifold’s active compensated stairwell pressurization (ACSP) system offers a plug-and-play solution, featuring fast-acting relief dampers and a UL 864-listed controller. The system is easy to install and integrates with fans that are rated for smoke control, ensuring compliance with the 2018 IBC standards.
For taller buildings, Scott introduces the advanced system option, which includes additional pressure transducers and controllers, allowing for precise air pressure management across multiple floors. The system can be customized for buildings over 100 feet, ensuring that pressure is maintained throughout the entire stairwell during a fire emergency.
In conclusion, the webinar highlights the importance of choosing the right stairwell pressurization system to prevent smoke from entering evacuation routes during fires. RM Manifold’s plug-and-play systems simplify installation and operation, ensuring compliance with modern safety standards and providing reliable protection for building occupants in high-rise structures.