A model of a concrete element: BETOATLAS. This dry-assembled concrete element allows for the construction of retaining walls up to 10 m high. The element, with its trapezoidal front shape, is designed to hold soil that cannot be removed externally, thus creating a gravity wall. Each element is equipped with a locking system at the front and rear, securing the upper elements to the lower courses and preventing any horizontal or lateral slippage. 83