Аннотация:The study of the relationship of local ground conditions with the parametersof seismic vibrations carried out by the section of engineering seismology calledseismic microzonation. In this branch of applied science radical changes havetaken place at the end of the last century. The Commission on Seismic Safetyof the National Institute of Building Sciences of the United States has developednew recommendations, which are significantly different from all thatused in the world practice of anti-seismic construction. The main provisionsof this NEHRP (National Earthquake Hazards Reduction Program) classificationadopted in many national building codes, including Eurocode 8. At thesame time, a number of papers appeared in subsequent years criticizing theuse of the NEHRP soil classification. This article examines in detail and, mostimportantly, comprehensively the shortcomings of the NEHRP classification.