FIELD: cable penetrations.
SUBSTANCE: cable penetration, which is a mineral wool filler, with which a sleeve placed in a hole with a depth of at least 150 mm in a building structure is filled at least to the embedding depth, 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 around the sleeve outside the hole, wherein the refractory fibre is also at least partially placed on the outer surface of the building structure; wherein: sleeve is also filled with fire-retardant sealant at least to 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 sleeve.
EFFECT: increased fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
