NCPI/NYC Research Project — An Evaluation of Four Bedding Systems

The purpose of the National Clay Pipe Institute (NCPI) / New York City (NYC) Research Project was to evaluate alternate clay pipe installation systems to address the structural problems associated with construction practices in the City of New York. The standard installation method uses Vitrified Clay Pipe with high strength concrete cradles in an effort to provide a robust system and insure dependability and longevity. The type and location of the beam fractures indicated that the incorporation of a measure of longitudinal flexibility would result in the reduction and possible elimination of the structural concerns. A Research Protocol was developed and agreed upon by NCPI and the City of New York.