The Plastics Pipe Institute Inc. (PPI) provides technical expertise, design guidance, and educational support for public works agencies, contractors, and engineers. PPI publishes data for the design, manufacturing, and installation of pipe systems in virtually every underground infrastructure application. PPI also publishes details about the life-cycle of pipe materials and collaborates with organizations to set standards for manufacturing practices and installation methods. Plastics Pipe Institute. www.plasticpipe.org
