Marking up a floor plan for a fire risk assessment

A fire risk assessment that lives entirely in prose has a quiet weakness: it describes problems without showing where they are. A line that reads "the cross-corridor door on the third floor is not closing fully" is accurate, but the contractor sent to fix it still has to work out which door, on a floor that may have a dozen. Marking the finding onto a plan closes that gap. The plan becomes the index to the report, and the report becomes something a person can act on without a guided tour of the building.

Why the drawing carries the load

The fire risk assessment is required under the Regulatory Reform (Fire Safety) Order 2005 for the responsible person, and the Fire Safety Act 2021 confirmed that it must cover the structure, the external walls including any cladding and balconies, and flat entrance doors. That is a lot of ground, much of it spread across the building rather than concentrated in one room. A plan is the natural way to hold spatial findings, because the eye reads a location far faster than it reads a paragraph describing one.

There is a second reason. The Fire Safety (England) Regulations 2022, in force 23 January 2023, already require responsible persons of high-rise residential buildings to keep hard-copy floor plans and a single-page orientation plan in a secure information box for firefighters, and to share floor and building plans electronically with the local fire and rescue service. The building already has plans that matter for fire. Marking the assessment onto the same family of drawings keeps everything pointing at one shared picture of the building, rather than two pictures that have to be reconciled later.

What belongs on the marked-up plan

The aim is a drawing someone can read under pressure, not a decorated one. A useful fire plan tends to carry a consistent set of marks:

• Compartment lines and the fire-resisting walls and floors that form them.
• Fire doors, with their rating and which way they protect.
• Escape routes, final exits and the direction of travel.
• Alarm panels, call points, detectors and any suppression.
• Dry or wet risers, hydrants and firefighting shafts.
• Smoke control and the location of any controls.
• Findings from the assessment itself, each pinned to its place and numbered to the report.

The discipline that makes this work is numbering. Each marked finding carries a reference that matches an entry in the written assessment. The plan tells you where, the report tells you what and how serious, and the two are tied by a number that does not change. Without that link the plan becomes a pretty diagram nobody trusts.

Keep the symbols boring and consistent

A plan is only useful if a stranger can read it, which means the symbols have to mean the same thing every time. A red line should always be the same kind of compartment line. A door symbol should always carry its rating in the same place. If every assessor invents their own notation, the value of marking up the plan leaks away, because the next person has to learn a new language before they can use the drawing. Agree a small symbol set, write it into a legend that sits on the drawing, and resist the urge to add cleverness. Boring is fine. Boring is readable at two in the morning.

From paper to a layer you can update

The traditional version of this is a printed plan with hand annotations, and it works right up to the moment something changes. Then the marks are wrong, the print is filed, and nobody photographs the new one. The better arrangement treats the marks as a layer over the plan rather than ink on a single sheet. When a door is upgraded or a wall is moved, the layer is updated and the history of what it said before is kept, so the assessment and the drawing move together.

This is where keeping plans inside the compliance system, rather than in a drawer, starts to pay off. A finding marked on the plan can link straight to the assessment entry, to a photograph of the defect and to the remedial action raised against it. The same approach helps when an assessor reviews the building and needs to see what was found last time and whether it was closed. We have written more about that in why floor plans belong in your compliance system, not a drawer, and the mechanics of holding plans this way sit on the building plans page.

A plan that survives the next assessment

The real test of a marked-up plan is the next fire risk assessment. If the assessor can open the previous drawing, see what was found, see what was fixed and start from there, the document is doing its job. If they have to start from a blank plan because last year's marks were on a sheet that has gone missing, the building has lost a year of memory. Marking up the plan is not extra work for its own sake. It is the thing that lets each assessment build on the last instead of repeating it.

When you next commission or carry out a fire risk assessment, ask for the findings to be pinned to a plan and numbered to the report. It costs little at the time and saves the contractor, the next assessor and the fire and rescue service from guessing where the problem actually is. The whole point of the assessment is to be acted on, and an action needs a location.