The Working Group for Excavations of the German Society for Geotechnics
publishes its Recommendations for Computations on Excavations in the
'EAB'. These recommendations are applied by the program. Buildings and
structures in the cities and new constructions in high density areas
place large requirements against the safety of deep excavations. New
construction methods have been developed and known sheeting methods have
been improved. Extensive statics computations of the excavation walls
will be necessary, in order to calculate the existing safety level. The
exploration of several structural variants makes an optimal utilization
of the bearing reserves possible. Grout anchors in one or in several
layers are increasingly used for the anchorage of the excavation walls.