FIELD: construction.
SUBSTANCE: invention relates to construction and represents made of plastic thin membrane of spike type with high resistance to buckling and effect of avoiding damage at interface. Technical result is achieved by the fact that the protective-drain membrane is made with a certain arrangement of spikes, wherein said spikes have a support surface corresponding to said upper part, area of which is more than 40 mm2 without taking into account said rounding edges, so that ratio between common support surface of upper parts and total surface of membrane, on which they are located, is more than 1/14, providing effect of avoiding damage to said waterproofing layer and providing resistance to warpage higher than 60,000 N/m2 according to ISO EN 25619-2; wherein said resistance value corresponds to minimum density of said plastic sheet, specifically 250 g/m2, wherein density of plastic sheet is from 250 to 1,000 g/m2, wherein said values correspond to thickness of about 330 mcm and 1,100 mcm, respectively.
EFFECT: creation of thin protective-drain membrane of honeycomb or single-layer type for protection of underground walls, which could be laid so, that upper parts of spikes rested directly in bitumen layer, shape and distribution of spikes of which would be optimal for simultaneous provision of required drain capacity of the membrane.
9 cl, 6 dwg
