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The document discusses stairwell pressurization systems in high-rise buildings. It explains that stairwells need to be kept free of smoke during a building fire to enable safe evacuation. This can be achieved by pressurizing stairwells using mechanical fans and outdoor air to create positive pressure relative to other spaces, preventing smoke from entering. The document covers preliminary design considerations for stairwell pressurization including factors that cause smoke movement, basic principles of smok
- Author
- ofitecnicajg
- Language
- EN