Good question. Expanded Polystyrene(EPS) is a is a material that is commonly used as protective packaging material for new electronic(s), used for soundproofing of studios, making of shock absorption materials, surfboards, food packages et al.
The panel completed with shotcrete becomes the structural element of the construction.
The profile of the polystyrene panel and the vertical wires of the mesh mats form micro-piles of reinforced concrete, distributing the weight of the structure around the entire perimeter.
