In this reference, the customer had the problem that the water was standing on the riding arena and could not drain off, making the arena muddy. By installing the floor grid BG30 the water can run off. Nice before/after comparison to see. Before is a riding arena to see which is virtually in the water and accordingly muddy.
After the replacement of the ground and the laying of the Ground Grid BG30 made of plastic, the riding arena is dry and free of mud. Rainwater / precipitation can run off unhindered through the Ground Grid. After this step, the Ground Grid can be filled with sand or riding sand or overfilled as a tread layer.