FIELD: cable penetrations.
SUBSTANCE: cable penetration 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 is pre-impregnated with a fire-retardant coating; and a 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 the sleeve is also filled with a fire-retardant sealant at least to the embedding depth; fire-retardant coating is applied on at least: length of the area where the fire-retardant coating is applied to the cable outside the sleeve, and/or surface of building structure in places of refractory fibre adjoining to them.
EFFECT: increasing the fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
