It is important to design a safe retaining system to facilitate the excavation works while imparting minimum impact to the surrounding. Hence, the prediction of the excavation behaviour is very crucial in determining the type of retaining system to be adopted. Nowadays this can be accomplished quite accurately by numerical modelling that is able to take into consideration the nature of the soil type, geometry of the excavation and the possibility of ground water seepage. Further understanding can be attained by comparing the analysed results with field readings from field instruments.