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Promat constructions / applications > Walls
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In Dutch immersed tunnels the ceiling is protected against fire using PROMATECT® -H boards. Also > 1m of the wall is protected with the same material. The heat of a fire rises to the ceiling and top side of the wall; that is where the damage will occur if no sufficient protection is foreseen.
 Caland tunnel in the Netherlands, PROMATECT® -H ceiling and wall protection |
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In case of fire the exhaust duct of the Toulon tunnel will evacuate the smoke and hot gasses of the fire. These gasses will damage the surrounding concrete structure. In order to prevent this 30 mm of PROMATECT® -T is applied to both the floor and wall structure.
On the other side of the wall is an escape route. To safeguard the escape route the temperature on the non-exposed side should be limited. The PROMATECT® -T creates sufficient insulation to obtain this.
 The Toulon tunnel in France,
wall protection in smoke exhaust duct
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During the full-scale fire tests in the Runehamar tunnel in Norway, one of the
investigated items was the fire load on the wall. The conclusion was that the thermal
exposure on the wall, measured at 1 meter above road level, was representative of a
Hydrocarbon type temperature development. This means that the walls are exposed
to temperatures in the range of 1000 - 1200ºC, in case of a fully developed tunnel fire
(RWS type). As a result, the conclusion was drawn that the test results clearly show
the necessity of a fire protective lining for wall applications. |
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