Consider Fire-Resistant Barriers in Open Layouts

01/13/2020 | By Pete Hall

Offering users flexibility and freedom to alter a space as necessary, it’s no wonder that the popularity of open plan layouts has increased. There are multiple benefits to the creation of large open spaces, including more natural light and a more social, collaborative environment for offices due to the lack of dividing walls.

There are numerous reasons for creating an open plan building design. Those involved in the events industry, for example, will use a range of open spaces, whether it be for exhibitions or networking. In offices, a shift to flexible working patterns and a growing preference for the ability to rearrange office desks and other furniture have contributed to more open plan office environments.

Unfortunately, should a fire break out in an open plan environment, smoke and flames can spread more than in a smaller or compartmented area. The most severe risk to occupants in a fire is excessive inhalation of gas, smoke or toxic fumes, which can be reduced by containing the spread of fire and protecting evacuation routes with implementation of fire-resistant barriers into a building’s design.

Active protection — such as smoke alarms and sprinkler systems — should be used in conjunction with passive protection — like fire doors and fire curtain systems — to ensure compliance to fire regulations and offer maximum levels of safety in the event of a fire.

The issues highlighted with open plan layouts need to be addressed for a building to adhere to ICC IFC 2018 and ICC IBC 2018.

Consider Fire Curtains in Open Spaces

To prevent the spread of fire, a building must be divided into compartments, which are marked by the implementation of fire-resistant barriers, such as fire doors and curtains. Open plan spaces pose specific challenges because it’s impossible to utilise fire doors, due to the absence of walls. Where fire doors cannot be implemented, fire curtains may be installed.

The main purpose of a fire-resistant barrier, such as curtains, is to suppress the growth and development of flames and smoke within a building, to protect escape routes and help minimize the risk to human life. Open spaces and critical escape routes such as lift openings and lobbies, can utilise fire curtains to control the spread of fire, which could spread more rapidly, for example through the lift shaft.

A fire curtain is a highly robust piece of fire-resistant material which is stored discretely in a steel headbox within the ceiling. In the event of a fire, the curtain is released by a trigger from a fire alarm or local detector, causing it to fall vertically via gravity. Once deployed, it obscures the space, acting as a crucial physical barrier between the fire and the escape routes.

Unlike fire doors, curtains can be installed in several different locations where there is a lack of walls, and can be used to replace a non-load bearing wall and fire rated glazing. In open plan layouts, the installation of a fire curtain enables a building to still meet the relevant regulations.

[Related: Ways Your Fire Protection System Could Fail You]

There is a growing global demand for the ability to see through a fire barrier. Therefore, where a fire curtain is installed in place of a door, a vision panel could be extremely beneficial. In an emergency, first responders are required to evacuate individuals from a building, therefore, fire curtains with a vision panel are likely to be a huge aid to first responders.

Adding a windowlike panel into the curtain means that once a fire curtain is deployed, first responders are able to identify flames and smoke, and the associated risks, on the other side, which could potentially save time in an evacuation.

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Fire Curtain Certification and Integrity

With the help of certification and testing, a fire barrier is designed to withstand the heat and effects of a fire for a specific length of time. The required duration of resistance is specified to enable an effective evacuation with enough time to make the necessary checks of the building, in order to minimise the risk to human life.

NFPA 80 is an important standard, providing comprehensive guidance on specification and installation. Aimed at specifiers, manufacturers, installers and facilities managers, the standard covers key aspects, such as a proficient installation and ongoing maintenance of the fire barrier, which must be achieved to illustrate competence and quality.

For the fire curtain industry UL10D is the key testing certification to look for in terms of compliance and product integrity. The level of integrity used to describe a product illustrates its fire resistance level. With fire resistance and integrity of components used in building construction facing increased scrutiny, there is a higher degree of focus on the integrity of every product when exposed to fire.

This certification provides assurance to end users and building occupiers that the product has been subject to and passed through third-party testing against a set of rigorous criteria.

The benefits of having a vision panel in fire-resistant barriers are clear. However, where they appear in curtains there must be no compromise on compliance, quality and the product’s resistance level.

Choosing products that are certified and have undergone thorough testing, provides assurance to specifiers and facilities managers that the fire protection measures in place are of the highest standard to preserve human life.

About the author:
Pete Hall is head of sales at BLE.

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