Staircase Pressurisation in UK Buildings: Design and Commissioning

Staircase pressurisation keeps escape stairs smoke-free. We explain when it's required and how to design it correctly.. Staircase Pressurisation When Required Deep basements where natural ventilation impossible Internal staircases with no external wall Firefighting shafts in tall buildings (optional enhancement) When CFD shows natural ventilation insufficient Design Parameters Minimum 50 Pa pressure differential Maximum 100 N door opening force Air velocity minimum 0.75 m/s through open doors BS EN 12101 6 — Design standard Commissioning Pressure measurements at all floors Door opening force measurements Air velocity measurements at open doors System response time verification Integration with fire alarm system testing For smoke control engineering, contact us.