The equivalent load factors which can consider the concentrated load effects due to the moving vehicles for each structural member are proposed in this study. A standard design vehicle with total weight of 2.4 tons is designed through the investigation of small to medium vehicles produced in Korea and the review of numerous foreign design codes. By applying the designed vehicle, various structural behaviours under wheel load in accordance with the change of geometries of connected structural members, i.e., thickness of slab, length of span, and sectional dimension of beams, etc., are numerically calculated using the finite element method. After calculating the ratio of the design moments by wheel load to those by distributed load, the relationship between the equivalent load factor and the span length considered is established by regression analysis and used to correct the design member forces at a typical section obtained by applying the distributed design load. The calculation of design member forces for the concentrated load can be easily accomplished through the multiplication of the obtained equivalent load factor without taking sophiscated numerical analysis for the moving wheel load.
