In order to build common houses they used to use raw earth, that has extraordinary thermal insulation capacity; raw land, in fact, is a material that works well in various climatic contexts, especially in countries with a humid hot climate, besides lowering the internal temperature by limiting the passage of heat from the outside to the inside, absorbs the humidity of the air, greatly improving the perception of well-being. Light-weighted straw-soil technique is considered a mixed technique for the presence of a bearing structure of material other than earth. With this technique, high energy performance walls can be made from biocompatible materials such as earth and straw. The different ratio between soil and straw in the dough gives place a massive masonry (between 400 and 1220 kg / mc), which will have thermal conductivity values ranging between 0.12 W/mK and 0.9 W/mK. It is possible to define this type of construction as a first example of passive house.
1.2 - Jetavanaramay