Evacuation Plans: From a Posted Drawing to a Real Drill

Most buildings have an "evacuation plan": a sheet beside the lift with a green arrow and a small drawing. At the first real alarm it turns out nobody knows who is in charge, where people go once they are outside, or who confirms that no one is still inside. A real plan is an operational document; the posted drawing is a small part of it.

This article separates three documents that are often confused, sets out what the plan should contain, and shows how a drill turns from a formality into a measurement.

Three different documents

• Fire safety drawings: engineering drawings submitted to the authority, showing exits, compartmentation and system layouts. Their audience is the reviewer and the contractor.
• Evacuation floor plans: simplified notices posted on each floor to orient occupants. Their audience is the visitor who does not know the building.
• The emergency and evacuation plan: a procedural document setting out who does what, when and how. Its audience is the operations and management team.

Having the first does not replace the third, and the absence of the third is what shows up during an incident.

What the evacuation plan contains

• Response scenarios: what happens on a first-stage alarm, on a general alarm, and on a report from a person rather than the system.
• Roles and responsibilities: the evacuation coordinator, floor wardens, who meets the fire service at the entrance, who runs the control room, and who covers those roles on night shifts and weekends.
• Evacuation sequence: total or phased, which floors leave first, and when the rest follow.
• Routes and alternatives: and what an occupant does when the nearest route is lost to smoke.
• Occupants with reduced mobility: an individual plan for each known case, refuge areas, who stays with them, and how the fire service is told where they are.
• Visitors and contractors: who accounts for them, especially on sites with construction works under way.
• Assembly and roll call: how it is known that everyone is out, and what happens when someone is missing.
• Re-entry: who authorises it, because that decision is not the building manager's alone.

Floor plans people can actually read

A good notice is understood in seconds: the reader's position is clearly marked, the plan is oriented the way they are facing rather than to north, and the information is minimal (the two nearest exits, the route, the assembly point, firefighting equipment). It is posted at decision points: lifts, corridor junctions and wing entrances. Most importantly, it is updated after any change to the internal layout — which is what gets forgotten after fit-out and tenant changes.

Assembly points: the detail chosen carelessly

• Far enough from the building and clear of falling glass and debris.
• Outside the fire service access route and approach area, so the crowd does not obstruct operations.
• With an alternative depending on wind direction, smoke and the location of the fire.
• Large enough for the actual numbers, shaded where possible in a hot climate, and safe from vehicle movement.
• Known to everyone and written on the notices, not "the back car park" by word of mouth.

Drills: from formality to measurement

The codes include a chapter on emergency planning and preparedness, with a table setting how often evacuation drills are held for each occupancy and who takes part; they usually require drills at unexpected times and records to be kept. The frequency that applies to your project comes from the adopted edition and the authority's requirements.

But the value of a drill comes from measuring it, not from holding it:

• Pre-movement time after the alarm, which is usually longer than assumed.
• Clearance time per floor, not only the total.
• Where the queue formed, which stair people ignored, who used the lift despite the instructions.
• Whether everyone heard the alarm and understood it, and whether the voice message was intelligible.
• What the floor wardens actually did, and how long the roll call took.

Those numbers are then compared with the assumptions in the egress study: if reality is slower than assumed, either the procedures and training change, or the assumptions and what they imply for the design are revisited.

Common mistakes

• A plan copied from another building, with names and locations that do not belong to this one.
• An assembly point sitting in the fire service approach route.
• No defined roles for night shifts and weekends.
• No procedures for occupants with reduced mobility, or refuge areas used as storage.
• Outdated notices that no longer match the layout after fit-out or a tenant change.
• An annual drill with no measurement, no report and no corrective actions.

How Three Edges can help

We produce fire safety drawings and evacuation notices in the form required for approval and for operation, and tie them to the procedural side:

• Building the operational assumptions into the fire and life safety strategy.
• Verifying evacuation times through egress modeling and comparing them with drill results.
• Submitting the documents to the authorities and handling their comments.

Frequently asked questions

How often should evacuation drills be held?

It depends on the occupancy: schools, hospitals, hotels and educational facilities have different frequencies from offices, set by the tables in the adopted code and by the authority. The practical rule is never below the legal minimum, and more often after any significant change to the building or the team.

Who writes the evacuation plan?

The consultant sets the engineering basis: exits, capacities, the sequence and the assumptions. The operations team builds the procedures, names and roles on top of it. A plan written by one side alone usually does not work.

What about multi-tenant buildings?

They need a building-wide plan covering management and the common areas, tenant plans aligned with it, and at least one joint drill. Without that, an evacuation becomes a set of conflicting decisions.

Are lifts used for evacuation?

As a rule they are not, except in systems designed and approved for it in some tall buildings, with specific procedures and training. The notices have to be unambiguous on this point.

Do you have a building that needs updated fire safety drawings and evacuation notices, or do you want to check that your plan actually works? Request the service and we will start at the drawings and finish at what the drill measures.

References

• Saudi Fire Code SBC 801 — emergency planning and preparedness — Saudi Building Code portal
• International Fire Code — Chapter 4: Emergency Planning and Preparedness
• NFPA 101: Life Safety Code — emergency plans and evacuation drill requirements