FIELD: cable penetrations.
SUBSTANCE: cable penetration is a mineral wool filler, with which, at least to the embedding depth, a hole with a depth of at least 150 mm in the building structure is filled, wherein the filler is pre-impregnated with a fire-retardant coating; and refractory fibre, which covers at least two cables outside the opening for the length of the refractory fibre placement section, 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 cable between the cables; wherein the hole is also filled with a fire-retardant sealant at least to the embedding depth; fire-retardant coating is applied at least over the length of the section of application of the fire-retardant coating on the cable outside the hole.
EFFECT: increasing the fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
