Life Safety Is Not the Whole Story

Fire engineering has enabled a generation of innovative buildings. It allows designers to move beyond prescriptive rules and develop solutions tailored to the specific needs of a project.

But it also raises a fundamental question.

What are we actually designing for?

In practice, fire strategies are still overwhelmingly driven by life safety objectives. This reflects the structure of regulation and approval processes. If occupants can escape safely, the design is often considered acceptable.

That may be compliant. It is not necessarily sufficient.

This is not a new observation. Concerns about the narrow framing of fire engineering objectives were being raised well before recent events brought wider scrutiny to the industry. The question now is whether the underlying issue has been fully addressed.

A building designed solely around life safety can still suffer extensive damage, prolonged disruption, and, in some cases, total loss. Where compartmentation is reduced, suppression is absent, or structural resilience is not fully considered, the consequences can extend far beyond the initial fire event.

In the years since Grenfell, there has been a necessary and welcome refocusing on competence, accountability, and the robustness of fire safety strategies. However, there remains a tendency to equate compliance with adequacy.

That is a low bar.

Fire engineering has always had the capability to address a broader set of objectives, including property protection, business continuity, and operational resilience. These are now more clearly recognised within the wider framework of BS 7974:2019, but recognition alone does not guarantee delivery.

The critical issue is objective setting.

If the only question asked at the outset is whether occupants can escape, then the design will optimise for that outcome. Other consequences, such as loss of critical infrastructure, interruption of services, or long-term business impact, may not be fully explored.

Real buildings do not operate on a single objective.

Hospitals must continue to function. Commercial operations depend on continuity. Infrastructure must remain available. In these contexts, resilience is not optional. It is integral.

The role of the fire engineer is therefore not simply to demonstrate compliance, but to help define what success looks like in the event of a fire.

That requires engagement with the client, an understanding of how the building will be used, and a willingness to challenge assumptions about what is “acceptable”.

Life safety is essential. It is the starting point.

It should not be the end point.

This article is informed by long-standing industry research and evolving practice. The views expressed are those of the author and are intended to support learning and good practice.