This Master Thesis is about the comparison of the effective concrete tension zone height determined with either finite element models using DIANA or Eurocode 2 and Jones method. The effective reinforcement ratio is an important parameter for the determination of the crack width and is depending on the effective concrete tension zone height. Therefore a better understanding of the effective concrete tension zone height can be beneficial for the determination of the crack width. Especially for structures with multiple layers of reinforcement. The finite element models have been used to check whether the assumptions made in Eurocode 2 and Jones method are correct for the determination of the effective concrete tension zone height.