FIELD: cable penetrations.
SUBSTANCE: cable penetration, which is a mineral wool filler, with which, at least to a depth of embedding, a hole with a depth of at least 150 mm in a building structure is filled, wherein: the filler has density of 35-70 kg/m3 and is pre-impregnated with a fire-retardant coating; and refractory fibre, with which at least two cables outside the hole are wrapped over the length of the section of the refractory fibre placement on the cable, wherein the refractory fibre is also at least partially arranged on the outer surface of the building structure, wherein the impregnated mineral wool filler is placed over the length of the section for placing the refractory fibre on the cable between the cables; wherein: the hole 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 the hole.
EFFECT: increased fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
