WATER DRAINAGE SYSTEM Russian patent published in 2004 - IPC

FIELD: building industry, particularly building engineering equipment. SUBSTANCE: water drainage system comprises a number of sections joined to each other having water-receiving funnel located in upper part thereof and drain means arranged in lover part thereof. Plastic sleeve formed of polymeric material is located into section such that plastic sleeve extends along the full section length. Plastic sleeve is fixed by flaring. Flaring narrow end is put on plastic sleeve, flaring wide end is supported by funnel which is covered with waterproofing substance. EFFECT: prevention of ice deposition into drainage pipe in winter. 1 dwg