Arena Design & Construction, from the bottom up ...
The Arena Separating Layer preserves the integrity of the arena base and subsoil, prevents horizontal migration of the arena base or the arena footing layer, while preventing the intermingling of the footing layer and the subsoil or the arena base.
This permanent separation layer is the critical portion of the design, as it renders the entire arena design + construction a permanency of both structural integrity and durability.
Without a permanent separation layer, any arena's subsoil and/or base mediums will inevitably become intermingled with the sand footing layer.
When that happens - the corruption of your footing layer - the entire arena must again be completely reconstructed - from the dirt, up.
For a high-performance, long-lasting arena, this separation layer must also be water-permeable in order to allow all-weather riding year round.
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