Disclosed is a structural wall with a frame made of wood, metal, plastic, polycarbonate or other resistant material, which does not have stiffening diagonal braces or noggings in the longitudinal axisthereof or, alternatively, has a reticulated and/or articulated structure. This wall is provided with the necessary rigidity by means of a structure external to the longitudinal axis thereof by meansof different diagonal elements secured to the studs or pillars and plates, so as to allow the inside of the wall to be filled with materials that enable same to provide features of habitability, suchas thermal inertia, thermal insulation, acoustic insulation, and fire resistance, by using very economical fillings such as soil from the site or simple mixtures such as mud and straw, mud with expanded polystyrene, lightweight concrete, earth with would shavings, earth and volcanic ash, or even using industrial waste such as punctured tyres or other elements, some difficult to recycle. In summary, a wide range of fillings can be used, according to the specific need. This manner of structuring, by enabling on-site filling of the inside of the wall, allows the features of habitability providedby the walls to be ostensibly improved, in a simple, fast and economical manner, the structure being easy to prefabricate and industrialisable, and with a large variety of applications in dwellings and various types of buildings.