SaskTel HomeNet Manual de usuario Pagina 17

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17
SaskTel servicing guidelines
for
existing Multi-Dwelling
Units
3.2.3 Fire-stopping
It is imperative that, in addition to the material presented here, the owner consult local
authorities and follow federal, provincial and local codes concerning fire stopping.
The function of a fire-stop is to prevent fire, smoke, or water from passing through a barrier or
penetration. In many cases, fire-stop seals are required to perform secondary functions, in
acting as environmental protection seals as well as sealing around penetrations which may
reach high temperatures or may move axially or laterally. These requirements must be taken
into consideration in the application of fire stops.
Commercial buildings are divided into fire zones by firerated barriers which are architectural
structures (e.g., walls, floors, and ceilings). The perimeters of the fire zones are established in
accordance with the building codes and construction requirements.
Any disruption in the continuity or integrity of the surface of a firerated barrier nullifies the
performance rating of the barrier. All penetrations shall be protected by approved fire-stops.
Penetrations are openings made in firerated barriers.
There are two kinds of penetrations:
"Membrane Penetrations" which pierce or interrupt the outside surface of only one side
of a firerated barrier; and
"Through Penetrations" which completely transit a firerated barrier, piercing both outside
surfaces of the barrier.
Penetrations are made to install building elements (e.g., conduits, cables, piping, fixtures,
boxes, ducts, etc.) and must be fire-stopped to return the barrier to its intended fire rating.
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