In order to investigate the impact resistant behavior of an arch-type structure, static and falling-weight impact tests for a small scale RC arch-type model were conducted taking arch width as variable. Total eight specimens were used for this study, in which four specimens are for 200 mm width and the other four specimens are for 800 mm width. Here, impact load was surcharged using a 300 kg falling heavy weight. The results obtained from this study are as follows: 1) in spite of loading way, specimens with a 200 mm width were failed with a flexural failure mode and specimens with a 800 mm width were failed with a punching shear failure mode; 2) it was confirmed that arch effects were not remarkable in case accompanying with punching shear failure.
