Durability and service life: Introduction. Durability and service life. Strategies and cost. Durable concrete. Practical durability approach. More advanced durability design. References. Inappropriate design: Introduction. Inappropriate dimensions and detailing. Wrong estimation of loading. Inappropriate estimation of creep effects. Inappropriate mix design. References. Errors during casting: Introduction. Errors during proportioning. Inappropriate mixing. Aggressive substances within the mix. Wrong placement of reinforcement. Bad compaction and other problems during casting. Problems with formworks. Damage in plastic stage. References. Actions during hardening: Introduction. Autogenous shrinkage. Drying shrinkage. Thermal shrinkage. References. Actions during service: Mechanical actions. Physical actions. Chemical actions. Reinforcement corrosion. References. Index.