Fire-rated ventilation duct and a method of manufacturing and/or installing such ventilation duct in a fire-rated ventilation duct structure penetration arrangement
AssigneeRockwool A/S
InventorsKurt Munk Pedersen, Jürg Dieter Stefan Rödenberger, Markus Thoma
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Abstract
A fire-rated ventilation duct structure penetration arrangement includes a ventilation duct and a building structure, such as a wall, ceiling or floor, through which the ventilation duct extends. The ventilation duct has one or more metal sheets forming the duct. The metal sheet duct is covered on the outside by a fire protection material, and the duct includes elongated stiffening members located on the outside of the duct and attached to the metal sheets. The stiffening members are arranged substantially within the opening of the building structure.
Claims14
A fire-rated ventilation duct structure penetration arrangement comprising:
- a ventilation duct;
- and
- a building structure comprising an opening extending in a longitudinal direction through the building structure, through which the ventilation duct extends;
- wherein the ventilation duct is covered on an outside by a fire protection material, and the ventilation duct includes at least one elongated stiffening member attached to the outside of the ventilation duct;
- and
- wherein the stiffening member is arranged substantially within the opening of the building structure.
A method of manufacturing and/or installing a ventilation duct in a fire-rated ventilation duct structure penetration arrangement, said method comprising the steps of:
- providing a ventilation duct section;
- mounting at least one elongated stiffening member located on the outside of the ventilation duct section and attached to the ventilation duct section;
- positioning the ventilation duct section with stiffening member through an opening extending longitudinally through a building structure, such that the stiffening member is arranged substantially within the opening of the building structure;
- covering the ventilation duct section and the stiffening member with a fire protection material;
- and
- sealing a gap between the outer surface of the fire protection material and the opening in the building structure.
Dependencies are inferred from the claim text.