United States Adaptation of European Yield Model to Large-Diameter Dowel Fastener Specification

Abstract

In the United States, the 1986 National Design Specifications for laterally loaded bolted connections are based on empirical descriptions of proportional limit load. The 1991 specifications for such connections will be based on the European Yield Model (EYM). This paper summarizes how the United States has adapted and calibrated the EYM in developing the NDS code. Subtle differences between the NDS code and the codes of other countries are described. Definition of yield point, relationship of specific gravity and dowel diameter to dowel bearing strength, standard test procedures for dowel bearing strength, verification data, and conversion factors are discussed.