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