FIELD: building.
SUBSTANCE: from at least two opposite sides, floor plane is fitted with connecting details made in the form of a tenon, on one side, and a groove, on the other. These parts are fitted with complex mechanical clutching facilities in the form of a ledge formed on the tenon and the edge limiting the groove. The edge bearing surface in longer groove ledge is caved-in in the form of an arch with the first radius r1, which contact point of which is located on the upper plane edge, while the tenon ledge in its transverse section has the form of a circular sector with the third radius r3, which is shorter than the first radius, where the lower edge part and the lower plane part, from the circular ledge side, have the second bearing surfaces inclined with respect to the vertical plane in the same direction to form the first acute angle.
EFFECT: improved floor hardness.
20 cl, 14 dwg, 4 ex
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