FIELD: cable penetrations.
SUBSTANCE: cable penetration is a fragment of mineral wool plate with density of not less than 100 kg/m3 with a hole for a cable, with which, at least to the embedding depth, the sleeve placed in the hole with a depth of not less than 150 mm in the building structure is filled, the length exceeding the hole depth; and refractory fibre with density of not less than 96 kg/m3which is wrapped around the sleeve outside the hole by the length of the refractory fibre on the sleeve, 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 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
