If you think that five breaths are all it takes to lose consciousness, you won’t be surprised to learn that as many as 70% of victims in a fire suffocate. Thick smoke can lead to disorientation and make it difficult to breathe, while the heat can cause parts of the building to collapse and start secondary fires. All this makes it difficult for people to find their way out of the building and for emergency services to make their way in to fight the fire.

1. © 2013 Colt International Licensing Ltd.
Fire safety through compartmentation with smoke and fire curtains
If you think that five breaths are all it takes
to lose consciousness, you won’t be
surprised to learn that as many as 70% of
victims in a fire suffocate. Thick smoke can
lead to disorientation and make it difficult to
breathe, while the heat can cause parts of
the building to collapse and start secondary
fires. All this makes it difficult for people to
find their way out of the building and for
emergency services to make their way in to
fight the fire.
Stopping the movement of smoke and
heat
Building codes have identified the need for effective escape routes as well as fire and smoke
compartments in order to prevent the movement of smoke and heat. However, the
architectural trend is for buildings with large open spaces, hence no compartmentation. Fire
and smoke curtains can provide a solution. They can be perfectly integrated into the
building’s design so that they are virtually invisible when rolled up. They can also be
connected to fire detection systems that will trigger them so that, in the case of a fire, they
roll down creating compartments to prevent the movement of fire, heat and smoke.
Compartments help smoke ventilation
Creating compartments also helps ventilators extract the smoke efficiently. Hot smoke is
more buoyant and tends to go up, so that natural ventilators will find it easier to extract it
quickly. If the smoke is allowed to cool by moving around the building, it will tend to return to
ground level.
Fire and smoke curtains: the options
 Fire curtains designed to achieve an integrity rating for 30, 60 or 120 minutes,
resistant either to flame (e), radiation (w) or ensuring complete insulation (i) to the EN
1634/1 standard.
 Smoke curtains designed to withstand hot air and smoke at temperatures from 600o
C
(to the EN 12101-1 standard) up to 1050o
C (under a standard fire curve according to
EN1363/1) for 60 to 120 minutes.
When designing the smoke control system using fire or smoke curtains, you will need to
consider whether they require side guides.
Fire and smoke curtains can provide excellent building compartmentation where permanent
compartments are not desirable owing to design considerations. In future articles we will look
in more detail at the characteristics of these various systems and how they can benefit your
design and provide fire safety in your building.

2. © 2013 Colt International Licensing Ltd.