Even Michael answered, you may find interesting to see some examples in the book "Introduction to Structural Dynamics, J. M. Biggs, McGraw-Hill Book Co., 1964", which is referred by Figure II-3.5.1.3-2 Dynamic Load Factors for Open Discharge System, Appendix II of B31.1 (search the book on internet).

As a rule, in case a structure is subject to a short duration load whose duration is much lower than the natural period of the structure, then the dynamic response will be lower than a static response using the same load. See the figures 2.6 and 2.7 in the book, for td/T<0.1.