Displays a series of recommendations for the pre - dimensioning of the walls; from which shall be calculated (using excel formulas); recommended minimum dimensions of the wall elements: base; toe; heel; crown; contrapantalla screen; and their respective thicknesses of concrete and steel frame level; taking into account the load conditions (active and passive soil thrust; earthquake and vehicle load); the mechanical properties of the soil foundation and filling; and other site conditions; all based on the specifications given by the book (analysis and design of retaining walls reinforced concrete, eng belandria rafael ángel torres