The reliability analysis for reinforced concrete (RC) structures will be discussed in this chapter. There are many research studies covering the reliability of different concrete structure elements. For example, Frangopol et al. (2001) discussed the performance of the slender reinforced concrete columns under random loads because, in designing the column, it is usually considered that the axial load and pending moments are perfectly correlated. However, in real life, the axial load and bending moment is a result of dead load and live load. In some cases, though, the maximum bending moment is a result of the wind load, because the wind load effect is not correlated with the dead load or live load.