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, wherein the filler is pre-impregnated with a fire-retardant coating; 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 at least over the length of the section of application of the fire-retardant coating on the cable outside each sleeve.
EFFECT: increasing the fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
