Structures can be exposed to unpredictable events such as physical threats, planning and/or design errors in the manufacturing process, which can significantly affect their structural condition and functionality. Existing buildings are particularly at risk, as damage to the load-bearing structure can also be caused by ageing processes. Recent structural failures have once again highlighted the fact that robustness, as an integral part of design, is indispensable. In addition, the reliability of structures has become increasingly important in recent decades. However, current standards and directives offer only qualitative robustness measures, and they have so far had little practical significance. Redundancy as a decisive factor influencing robustness plays an important role in the design of a structural system. Redundant systems allow alternative load paths and the loads due to redistribution can still be absorbed in the event of loss or weakening of individual structural components. In the context of this work, truss constructions are treated, which have a considerable area of application in the building industry. The effects of failure of members and nodes on system functionality are investigated based on state-of-the-art robustness assessment concepts.