FIELD: cable penetrations.
SUBSTANCE: cable penetration is a fragment of a mineral wool plate with a density of not less than 100 kg/m3 with a hole for a cable, with which, at least to the depth of embedding, is filled at least two sleeves placed in a hole with a depth of at least 150 mm in a building structure; and refractory fibre, which wraps at least two sleeves outside the hole for the length of the section for placing 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 mineral wool filler with density of not more than 70 kg/m3 impregnated with the fire-retardant coating is placed over the length of the section for placing the refractory fibre on the sleeve between the sleeves; wherein every sleeve is also filled with fire-retardant sealant at least to the depth of embedment; wherein the impregnated mineral wool filler is placed over the length of the section of the refractory fibre on the sleeve between the sleeves.
EFFECT: increasing the fire resistance of cable penetration.
1 cl, 6 dwg, 8 tbl
