The development of accurate modeling methods for shoring and reshoring systems during the construction phase is crucial to ensuring structural stability and safety. Traditional evaluation methods of load distribution during construction assume infinite stiffness of the shoring system. However, more recent studies have demonstrated that the stiffness of the shoring system significantly influences load distribution. This paper presents a refined modeling approach that incorporates Finite Element Method (FEM) to better capture the effects of shoring system stiffness on the load transmission during construction of multi-story reinforced concrete buildings. The developed method integrates crucial factors such as time-dependent properties of concrete, creep, and construction stages to better reflect the real conditions experienced during the construction phase. The proposed model is applied to a real seven story case study building at the Building Research Establishment, Cardington UK. The FEM numerical results with finite stiffness of shoring system showed consistency with field measurements. This consistency highlights the effectiveness of the proposed method in enhancing the accuracy of evaluating the load transmission between the slab and the shoring system and, ultimately contributes to ensuring human and structural safety during the construction phase.