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The boards are used as residual formwork for concrete andreinforced concrete walls in the construction of residential,administrative, public and agricultural buildings. By them evenwall surfaces are produced permitting the usage of thin-layerplastering, rendering, mounting of prefabricated chipboard,Plaster of Paris chipboards and Plaster of Paris and cardboardtiles and direct laying of sanitaryware tiles, terracota and otherfacing and lining materials. The wood (chipboard)-and-cement tilesare in the form of a rectangular parallelepiped (1) on one of thesides of which, laterally along their entire lengths every 250 mm,continuous grooves (2) or ones with a fixed size (3) are fitted.1 claim