Construction Productivity Advancement Research Cpar Program Guidelines For Trenchless Technology Cured In Place Pipe Cipp Fold And Formed Pipe Ffp Mini Horizontal Directional Drilling Mini Hdd And Microtunneling

These guidelines mark the completion of the Construction Productivity Advancement Research (CPAR) project 'Trenchless Construction: Evaluation of Methods and Materials to Install and Rehabilitate Underground Utilities.' CPAR is a cost-shared U.S. Army Corps of Engineers and construction industry research program. This 3-year project was conducted by the U.S. Army Engineer Waterways Experiment Station and the Trenchless Technology Center at Louisiana Tech University. The overall objective of this study was to develop guidelines that owners, engineers, and contractors could use to evaluate and select appropriate trenchless methods and equipment for their project requirements and site conditions. The guidelines focus on the three major elements of trenchless technology investigated in this study: rehabilitation of existing pipelines using cured-in-place (CIPP) and fold-and-formed pipe (FFP) methods, installation of small-diameter (2- to 10-in.) pipe lines using mini-horizontal directional drilling (mini-HDD) and installation of larger diameter pipelines using microtunneling. The guidelines are based primarily on the results of extensive laboratory and field investigations. (MM).