FIELD: cable penetrations.
SUBSTANCE: cable penetration is a mineral wool filler, with which, at least to the embedding depth, is filled at least two sleeves placed in a hole with a depth of at least 150 mm in a building structure, each of which is longer than the depth of the hole, and refractory fibre, which is wrapped over the length of the refractory fibre placement on the sleeve the sleeves outside the hole, wherein the refractory fibre is also at least partially placed on the outer surface of the building structure, wherein the impregnated mineral wool filler is placed over the length of the section of the refractory fibre on the sleeve between the sleeves; wherein each sleeve is also filled with a fire-retardant sealant at least to a depth of embedding; fire-retardant coating is applied over at least the length of the area of application of the fire-retardant coating on the cable outside each sleeve; and/or surface of building structure in places of refractory fibre adjoining to them.
EFFECT: increasing the fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
