Collapsible soils must be stabilized to increase their strength and reduce compressibility. Only after preliminary works on the basis of a stable foundation can be built. This article focuses on the analysis of behavior, interaction of geosynthetics and collapsible soils on the example. Also from the geonet you can make a drainage layer filled with small rock. A layer of geogrid will prevent mixing of layers, impacts the drainage layer of crushed stone in collapsible soils.