Why Fire Alarm Zoning Matters for the Safe Evacuation of Commercial Properties
Heard of fire alarm zoning? In a commercial or public building, zoning is the way that a building is divided into sections so that when a fire alarm sounds, it’s easy to see where exactly the alarm has been set off.
Fire alarm zones are a key part of a fire alarm system design, especially when it comes to large, multi-storey properties with complex layouts. When an alarm is activated, having clear zones in place means that the control panel can indicate whereabouts in the building a fire has broken out, meaning that responders can reach the fire quicker and people can be evacuated safely.
In this blog, we’ll talk more about what fire alarm zones are, outline the guidance on zoning according to BS 5839-1, and highlight why correct zoning matters so much in commercial buildings.
What Are Fire Alarm Zones?
Each fire alarm zone is a defined area of a building used to identify where an alarm has been activated. The devices assigned to a zone, such as fire detectors and manual call points, allow the fire alarm control panel to indicate the affected area.
With a conventional fire alarm system, devices within a zone are typically connected to a common circuit, and the control panel identifies the affected zone as a whole. With an addressable system, individual devices can be identified, allowing the control panel to indicate the specific detector or call point that has activated.
How Fire Alarm Zones Are Designed
Zoning is designed according to the requirements of the building, taking into account things such as building size, number of floors, occupancy and escape routes. A small, single-storey building may only need one zone, while in multi-storey buildings each floor will typically have its own zone. Larger floors may need to be divided into two or more zones.
At Midland Fire, we are well versed in BS 5839-1, which sets specific limits on zone size and boundaries. These guidelines ensure that zones are small enough to be easily searched in the event of a fire, and that zone plans are designed with the building’s layout and structure in mind. It’s crucial that you hire a competent fire alarm professional to plan your fire alarm zoning to ensure these guidelines are adhered to.
Fire Alarm Zone Plans and Charts
To make sure everyone’s clear on your fire alarm zones, each zone should be clearly identified on the control panel and on a corresponding zone plan. This is a physical piece of signage displaying the zone map of your property. A fire alarm zone plan should:
- Be clear and easy to read.
- Normally be located near the fire alarm control panel.
- Help show which areas of the building correspond to each zone.
- Be updated if the building layout changes.
- Always be visible and accurate to avoid delayed response during an emergency.
The Benefits of Fire Alarm Zoning
Fire alarm zoning is a key element in designing a safe and compliant fire alarm system. Below are some of the benefits of an effective zoning strategy:
- Helps identify the affected area.
- Supports staged or phased evacuation strategies where relevant.
- Reduces confusion in larger buildings.
- Helps staff investigate alarms safely and efficiently.
- Supports emergency services on arrival.
- Can help identify faults or repeated false alarm areas.
Signs of Poor Fire Alarm Zoning
The main problem with poorly designed fire alarm zoning is that it becomes harder to respond quickly and effectively to an incident. If a zone is too large, for example, it can be difficult to locate a fire quickly, and sometimes zones can become outdated if they aren’t altered following changes to the building.
Sometimes the problem isn’t the zone design itself, but rather the fire alarm zone plan. If plans aren’t displayed correctly or in the right place, or if staff aren’t correctly trained on how to read them and respond to alarms, you’ll find your zoning is much less useful. For these reasons, it’s key to choose an accredited professional to map out your fire alarm zones and regularly review them.
When Should Fire Alarm Zoning Be Reviewed?
As with all your fire safety systems and equipment, fire alarm zoning should be regularly reviewed to ensure your current setup is still effective for your property. Any building changes or system upgrades should also trigger a review, such as:
- Refurbishments.
- New partitions or room layouts.
- Extensions.
- Change of building use.
- New tenants or departments.
- Repeated false alarms.
- Panel upgrades or system alterations.
Choose Midland Fire as Your Expert Fire Safety Partner
Midland Fire is a BAFE-accredited fire safety contractor offering a range of fire safety, security and electrical contracting services.
We provide a free consultation, in which our fully qualified engineers will assess your commercial property and advise you on the best solutions for your business. We will then go on to design and install your systems, planning fire alarm zones where necessary, and we can provide you with ongoing maintenance and support once your systems are in place.
At Midland Fire WE PROTECT. Contact us today for your free consultation.
Frequently Asked Questions
What are fire alarm zones?
Fire alarm zones are defined areas of a building that help locate where a fire alarm has been activated. They are usually displayed on the fire alarm control panel and mapped out on a zone plan.
Why are fire alarm zones important?
They help staff, responsible persons and emergency services quickly identify where a fire has broken out, supporting safer evacuation and faster response.
Do all commercial fire alarm systems need zones?
Most commercial fire alarm systems use zoning in some form, especially in larger or more complex buildings. The exact zoning design depends on the building layout and fire alarm system.
What is a fire alarm zone plan?
A fire alarm zone plan or chart shows how the building is divided into fire alarm zones. It should be clear, accurate and usually displayed near the fire alarm control panel.
When should a fire alarm zone plan be updated?
It should be reviewed and updated if the building layout, use, fire alarm system or escape strategy changes.
Can Midland Fire review existing fire alarm zones?
We can! Our team can review commercial fire alarm systems, zoning, zone plans, panel information and maintenance requirements to help ensure your building remains appropriately protected.
