This study was verified consistency of the equation for punching shear load-carrying and S-N curve formula using the replacement RC slabs with two type of interstitial parts carried out running load experiment and wheel running fatigue test. As a result, the fracture modes of two kind of experiments resulted in the punching shear fracture with the precast slab. On the basis of the experiment results, the punching shear load-carrying capacity (Psx) proposed by Abe et al was evaluated as above 0.93 times compared with the experiment value. In the verification of the consistency with the S-N curve formula from the relationship with number of equivalent cycle using Psx were plotted within ±5% of confidence limit.
