To create a straw house requires the presence of breaking (flax, large sawdust), as well as clay and large sand.
It is wonderful if sand and clay are on the construction site.
For the process, 3 liters of water and salt 50 g are needed.
To determine it is required to take a sample of the soil and grind thoroughly. Then put it, filling it with three -liter banks previously filled with water by 1/3 or half. After that, it is necessary to add salt that accelerates the washing of clay from the soil. The next step lies in a strong and long shaking cans. Clay hard pieces must be softened in water for an hour, and then also shaking.
This process crushes the soil into small particles. The necessary sand falls to the bottom during the first 3-5 seconds, its level on the bank should be noted. The next 10 minutes fall silt and small sand. We note on the bank. Then clay settles.
If the soil is suitable for construction, then rough sand should lie at the bottom with a thick layer, slightly less – a layer of clay, small sand and silt should be very small.
There are different soil composition in different parts of the site. To determine it, you need to dig a large number of pits. Also, the composition of the soil can be different relative to the depth.