Terms of Reference - Summary FE 05.0185 / 2014 / CRB "Numerical modeling of the lysimeter BASt" The use of "replacement materials" such as recycled building materials and industrial by-products, as well as anthropogenic contaminated soils according Recycling Act mandatory and meaningful from an economic perspective. These materials are obtained in large quantities and are well suited for use in earthworks, where large quantities of building materials are needed. Soil and groundwater protection are to ensure this. To minimize a possible discharge of pollutants from the materials mentioned above, it is necessary to keep the entry of water into a building of such materials is minimal. These are technical safeguards in the building, which are described in the "Notice concerning structures for technical safeguards in the use of soils and building materials with environmental substances in earthworks (M TS E)". In order to optimally use and improve the technical safety measure in road construction can of water and solute transport must be described realistic and adapted to the specific conditions in the building in replacement construction materials. To determine realistic data large scale lysimeter be carried out by the BASt itself and in cooperation with the University of Augsburg. This should be ready by numerical modeling in the context of this project. When creating the model the known characteristics of the building materials used are to be transferred into the model. Procedure: see tender specifications - Long version (tender documents No 1.b..).