FIELD: cable penetrations.
SUBSTANCE: cable penetration, which is a mineral wool filler, with which, at least to the embedding depth, filled at least two sleeves are placed in a hole with a depth of at least 150 mm in a building structure, each of sleeves is longer than the depth of the hole, wherein the filler has density of 35-70 kg/m3 and is pre-impregnated with a fire-retardant coating; and refractory fibre, which is wrapped for the length of the refractory fibre placement on the sleeve of sleeve outside the hole, 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 portion 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: increased fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
