Patent ID: 8852009
Filing Date: 2014-10-07
Classification: E01C

Abstract:
1. An area suitable for sporting activities, comprising an upper synthetic surface layer, and a sub-surface support layer which includes a load bearing structural module, wherein the structural module comprises a top wall and a bottom wall spaced therefrom by one or more supporting elements so as to define a volume between the top and bottom walls, the top wall being provided with a plurality of apertures to permit the flow of liquid into and out of the volume, and the size and shape of the apertures being such that the apertures cause substantially no variation in the flatness of the synthetic surface layer, and the bottom wall is provided with a plurality of apertures which are relatively large compared to the apertures of the top wall, the size and shape of the apertures in the bottom wall being such that a sphere with a diameter which exceeds a maximum diameter allowable for spheres to be able to pass through the apertures in the top wall will be able to pass through the apertures in the bottom wall.