FIELD: construction engineering; pavement for roads and pedestrian ways. SUBSTANCE: novelty of invention consists in shape of lower part of slab made in form of rectangle whose contour is reduced relative to central axis parallel to faces with grooves by magnitude of depth of trapezoidal groove of upper part; opposite sides of slab have grooves in form of isosceles trapezium. Transition between shifted side faces of upper and lower parts is made by means of inclined planes. EFFECT: increased supporting power of pavement; reduced vertical shift between slabs. 4 dwg
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