When prescriptive codes don't fit, BS 7974 provides the framework for engineered fire safety solutions. Understanding the methodology.. Beyond Prescriptive Compliance Performance based fire engineering allows designers to demonstrate equivalent or superior fire safety through analysis rather than rigid code compliance. BS 7974 Framework The standard provides a systematic approach through Published Documents (PDs): PD 7974 0 — Guide to design framework PD 7974 1 — Fire initiation and development PD 7974 2 — Spread of smoke and toxic gases PD 7974 3 — Structural response PD 7974 4 — Detection and activation PD 7974 5 — Fire service intervention PD 7974 6 — Evacuation PD 7974 7 — Probabilistic risk assessment When to Use Fire Engineering Complex or unusual building geometries Travel distances exceeding prescriptive limits Open plan or atrium designs Heritage buildings where prescriptive solutions are impractical Mixed use developments with conflicting code requirements For performance based fire engineering, contact Magnus Opifex. Magnus Opifex SEVEN LTD — UK's Leading Fire Safety & Fire Engineering Consultancy 🌐 magnus opifex.co.uk 📞 +44 7486 691724 ✉️ office@magnus opifex.co.uk Founders: Nicoleta Vasile, Baroness of Brattleby — CEO, Lawyer and Barrister, Legal & Administrative Director Alina — 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. © 2026 Magnus Opifex SEVEN LTD. All rights reserved.