**5. Summary and conclusions**

The Combined Pile-Raft Foundation (CPRF) is a hybrid foundation system that combines the bearing capacity of a foundation raft and of piles or barrettes. The experiences made during the construction of several high-rise buildings show, that compared to a raft foundation a CPRF reduces the settlements by more than 50%. In addition, a CPRF reduces the necessary construction material including concrete and steel. This leads to a significant reduction of CO2 emissions. To sum up the positive effects of a CPRF are:


*New Approaches in Foundation Engineering*
