| 摘要 |
The invention relates to a slab of polygonal, in particular rectangular shape, comprising projections provided on the periphery to constitute spacers which serve, when laid, to create gaps through which grass can pass. Slab, characterised in that the projections (2) extend outwards at the four corners of the slab (1) diagonally or in the direction of the bisector (W) of the corner of the slab, depending on the desired width of the gap, in view of the fact that the flat outer edges (3, 4) of the projections extend at a right angle in the direction of the diagonal or of the bisector (W). <IMAGE>
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