Therefore, the system engineer rang everything necessary to understand the properties and behavior of materials and geotechnical engineering technique to bring the decision to select the materials that applied work .
The rail system engineers need to understand the properties and behavior of materials, geotechnical engineering in order to decide on the choice of materials used.
So engineers rail system it is necessary to have an understanding of the properties and behavior of materials in geotechnical engineering to be decided in the selection of materials used .