Page 222 - THE FIRE STATION

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SMOKE AND HEAT EVACUATION
Basement parking deck
The total surface area of the basement parking deck exceeds the
2,500m² limit set forth in the base norm on fire protection in me-
dium-sized buildings, necessitating the installation of mechanical
system for evacuating smoke and heat. In the case of an incident,
this will enable occupants to leave the parking deck in complete
safety, while also helping the fire brigade to deal with the incident. systems” defines the design guidelines allowing a comfortable and healthy
The principle involves letting in air through openings on the south
side of the building, and extracting it on the north side (via an out- 5 – BEP is the abbreviation for Building Energy Performance, and the Wal-
let under the road and ending in a ground grate on the grounds),
thereby “sweeping” the four zones (the surfaces of which are
each less than 1,000m²) at a lateral speed sufficient to remove the
smoke produced by a fire.
These zones are formed by reinforced concrete walls with open-
ings allowing air and vehicles to circulate. Eight fire curtains are
fitted to these openings, allowing them to be sealed in the case
of a fire.
All smoke and heat evacuation systems run on normal or emer-
gency electric current, and alarms indicating possible defects of
the system components are reported to the central control system.
The emergency vehicle garage
The emergency vehicle garage is treated the same way as the
parking deck, as it presents similar fire risks.The simultaneous
opening of 12 folding exit doors is however enough to ensure
the evacuation of smoke via natural ventilation.
The control and power supply of the doors concerned and the
doors in the partition walls separating the garage’s various zones
(ambulances, work-shop, car-wash) are controlled from the third-
floor control room via fire-resistant cables. Alarms indicating pos-
sible defects of the system components are reported to the central
control system.
1 – The ATEX (the abbreviation for ATmospheres EXplosibles) regulation
is based on European directives.
2 – UPS (Uninterruptible Power Supply): A system with its own battery and
providing electricity in the case of a power cut, independent of the grid.
3 – ppm (or ppmv) is the abbreviation for “parts per million” (in volume)
of a gas in the air.
4 – The norm NBN EN 13779(2010): “Ventilation for non-residential build-
ings. Performance requirements for ventilation and room-conditioning
indoor environment to be provided throughout the year at acceptable
installation and operational costs.
loon Region’s regulation applies to all buildings (apart from explicit excep-
tions set forth therein) for all construction, reconstruction and conversion
work requiring planning permission.
6 – The envelopes of the “office” and “miscellaneous” zones are 44.44%
better insulated than BEP requirements, while that of the “production”
zone is 32.73% better insulated:
– “Office” and “miscellaneous” BEP zones: overall thermal insulation
coefficient of 25 (against the required 45);
– “Production” PEB zone: overall thermal insulation coefficient of 37
(against the required 55).
7 – A machine for producing coolant through the principle of vapour
compression on the basis of the condensation of a refrigerant following
compression, and its subsequent evaporation.
8 – Light-Emitting Diode.