An attempt was made to create a numerical model to describe the cracking of a reinforced concrete element due to imposed strains. The model takes into account the theory of bond-slip between reinforcement and concrete. At the initial stage of cracking, the strains are redistributed from the whole opposite transfer lengths to the crack width. As cracking progresses and the crack spacing decreases, these transfer lengths become shorter and in fact are equal to half the length between the cracks. The model was verified against experimental results available in the literature. This concerns elements in axial tension reinforced with a single reinforcing bar and with a cross-section area of concrete no larger than the effective cross-section area of the concrete in tension. Also, calculations based on standard models were performed to demonstrate the limited scope of their usefulness. Due to the very limited number and type of studies used, this model requires further verification in the future. The results and capabilities of the presented model indicate its great potential for further analyses of more extensive computational cases.