"The synthesis describes the current state of the practice regarding state transportation agency standards and strategies that determine and define the service

TRB's National Cooerative Highway Research Program (NCHRP) Synthesis 303: Assessment and Rehabilitation of Existing Culverts summarizes the state of the practic

Published by the Plastics Pipe Institute (PPI), the Handbook describes how polyethylene piping systems continue to provide utilities with a cost-effective solut