(57) The present invention relates to a ground grid for supporting and retaining ground
coverings, comprising a base plate and an open-cell structure, wherein the sides of
the cell structure comprise a coupling system to connect adjacent ground grids to
each other, wherein the coupling system comprises a male coupling element and a female
coupling element, wherein each side comprises one or more male coupling elements and/or
one or more female coupling elements, wherein the male coupling element of the ground
grid can be connected to the female coupling element of an adjacent ground grid, and
wherein the female coupling element of the ground grid can be connected to the male
coupling element of an adjacent ground grid, wherein the female coupling element is
formed by a T-shaped recess in the side of the cell structure, which recess extends
through the base plate and the cell structure. The invention also relates to a method
for connecting two or more ground grids.
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