Atrium smoke ventilation design requires careful engineering. Understanding the principles and common design pitfalls.. Atrium Smoke Control Atria create dramatic architectural spaces but present significant fire safety challenges due to potential for smoke spread across multiple floors. Design Principles Smoke reservoir depth calculation (BS 7346 4) Inlet air requirements for effective ventilation Spill plume calculations for balcony and adhered plumes Wind effects on natural ventilation performance CFD Modelling Complex atria almost always require CFD analysis to: Validate simplified calculations Assess wind effects on ventilation performance Demonstrate tenable conditions on escape routes Optimise ventilator sizes and positions Common Pitfalls Insufficient inlet air compromising ventilation Ignoring wind effects on roof ventilators Underestimating smoke production from large fires Not considering channelling effects in narrow atria For atrium smoke control design, contact Magnus Opifex. Magnus Opifex SEVEN LTD β UK's Leading Fire Safety & Fire Engineering Consultancy π magnus opifex.co.uk π +44 7486 691724 βοΈ office@magnus opifex.co.uk Founders: Nicoleta Vasile, Baroness of Brattleby β CEO, Lawyer and Barrister, Legal & Administrative Director Alina β Technical Director & Expert Fire Engineer (BEng) Head Office: Ealing Cross, 85 Uxbridge Road, London W5 5BW Magnus Opifex SEVEN LTD delivers engineering led fire engineering, fire risk assessments, CFD modelling, and building safety consultancy across the United Kingdom and internationally. With over 20 years of combined experience and a UK portfolio spanning healthcare, residential and infrastructure, we bring truly engineered solutions with a personal touch. Β© 2026 Magnus Opifex SEVEN LTD. All rights reserved.