Building with the already used materials is not a novelty lately. Making the project that would include people’s waste as a construction material is what would increase the eco awareness and keep the environment more clean. 3D drawings, descriptions, and learning the nitty gritty for a construction of an earth bag walls are great projects!
These images will show you many details of the construction and will help you better understand that this is a solid construction that is best cheap solution in several areas of the world. More, in the link bellow.