14 February 2022
Are Fire Design Guidelines Similar in Australia & the UK?
Both part of the British Commonwealth and also the spirited Ashes cricket series, does the commonality between Australia and the UK extend to fire design guidelines for buildings as well? Both countries have had their share of building fire disasters, and thus, there is an urgent need for effective firefighting systems design. In Australia, it is the Warren Centre report that details the required regulations for fire safety engineering. The UK has a well-established tradition of detailed and precise fire design regulations. It is imperative that fire design service providers for both nations acquire a proper understanding of firefighting systems design to ensure safety for all inhabitants.
Looking at Australian regulations first, we can see they are practical and ensure safety at all times.
The Warren Centre’s guidelines for firefighting systems design were developed according to the International Fire Engineering Guidelines and fire safety verification methods (FSVM). It is crucial that engineers adhere to detailed fire safety specifications and understand the need for any modifications of the design, if required.
Some of the safety requirements from the building code for Australia (BCA) are:
- All buildings taller than 3 storeys must have non-combustible external materials.
- Architects and engineers must consult with fire protection and fire safety consultants during concept design, rather than wait for the schematic or detailed stages.
- All fire safety equipment must be carefully and thoroughly checked before and after installation to ensure that they are operating in optimum condition.
Building owners are responsible for the following:
- Buildings must comply with all fire regulations and standards.
- Conducting risk assessments to determine the right level of fire safety measures
- Identifying high-risk areas in case of fire
- Providing training for fire prevention, emergence evacuation and the use of firefighting equipment for employees
- Ensuring the detailing of suitable fire safety measures
- Ensuring that building modifications maintain the building’s fire safety
Building designers and building contractors must ensure the following:
- Building fire integrity
- Provision of suitable fire escape routes
- Planning for adequate evacuation time and distances to safe places
- Installation and fitting of fire doors and other relevant fire barriers
- Inclusion of fire separation chambers or compartments, when possible
- Provision of safe places, refuges, where employees will be protected from fire
The UK has extensive legislation and building laws for fire safety design. The Regulatory Reform (Fire Safety) Order 2005 is applied in England and Wales. The Fire Safety (Scotland) Regulations 2006 governs Scotland, and in Northern Ireland, it is the Fire and Rescue Services (Northern Ireland) Order 2006 that is followed. For the management and use of residential buildings, BS 9991:2015 details a Code of Practice for fire safety design.
For building owners and designers, these are some of the guidelines for the design layout:
- The building fabric must have fire-resistant material.
- Layouts must impede the spread of fire.
- Building construction should be stable for a ‘reasonable period’.
- The spread of fire and smoke in ducts, ceiling voids or floor voids must be inhibited.
- Large buildings must have compartments with fire-resistant materials, to inhibit the spread of fire and help evacuation.
- Walls shared by 2 buildings must be designed to stop the spread of fire.
- Roofs and outside walls should not include thatch, wood shingles and certain plastics.
The capability of a wall, floor or door to endure heat and fire is referred to as fire resistance. A building with a fire resistance of 30 minutes can help people find escape routes. Fire resistance can be enabled by:
- Constructing an internal, non-load bearing, framed wall, with 72mm x 37mm timber studs at 600mm centres and faced with a 12.5mm plasterboard with joints that are taped and filled.
- Erecting a masonry cavity wall made of solid clay bricks, brick pieces, shale, concrete or calcium silicate, with a minimum thickness of 90mm on each leaf.
Fire compartmentalisation involves the subdivisions of a large space with fire-resistant walls, floors and doors that will restrict the spread of smoke and fire between floors. Each subdivision must have its own escape routes.
Smoke can fill adjoining spaces quickly if fire doors and their gaps are not sealed effectively, making it difficult to negotiate escape routes and routes to protected areas, or refuge points. Refuge points are spaces where people gather to wait for evacuation. Refuge points must also be enclosed in fire-resistant material. These spaces must have:
- Sufficient space for the occupants expected to wait there
- Sufficient space for expected occupants and occupants from any adjacent refuge points
- An escape route via the stairs
- An area that can ideally be evacuated in 2.5 minutes, according to the National Association for Safety and Health in Care Services (NASHiCS) published in 2016
- Arrangements with fire and rescue services as part of the evacuation procedure
Additional precautions must be taken for the protection of people from smoke and fire between floors, through the lift shaft, such as:
- Using fire-resisting building materials and a fire-door access to separate the lift from the rest of the floor
- Positioning the lift shaft and stairs in a protected enclosure
- Providing ventilation of .1m2 at the top of the lift for smoke to escape
- Designing an escape route of minimum 1050mm width
- Clearing corridors, foyers and stairwells of combustible items and any other obstacles.
- Providing corridors that serve bedrooms with self-closing devices of 30-minute fire-resisting standard
Construction (Design and Management) Regulations say that clients, designers and contractors must meet, discuss and agree on fire safety measures. According to the regulations, the principal designer is responsible for the coordination of the pre-construction phase, including fire safety, while the main contractor is responsible for daily on-site fire safety.
So, it can be concluded that firefighting systems design for both Australia and the UK will need knowledgeable fire design service providers that can provide accurate fire alarm drafting and design services and thoroughly understand the rules and regulations of Australia and the UK. Cost-effective and trusted mechanical and electrical design services providers can be sourced overseas by both Australian and UK firms, as long as they are updated on the relevant fire safety regulations.
XS CAD has valuable experience providing value engineering services and drafting and design services for building services design consultants, mechanical contractors, utility contractors and general contractors. Our range of services as fire design service providers for global consultants and contractors include firefighting systems design, fire alarm drafting and design services, electrical design services, MEP coordination drawings and modelling services. We create these models and drawings using Revit, AutoCAD, MEP BIM processes and BIM Collaborate Pro for cloud collaboration.