PressureCast Steel Pipe Combined Load Test Set-Up and Execution

PressureCast Steel Pipe (PCSP) utilizes a patented manufacturing process to pre-compress the concrete or mortar lining in steel pipe. The combined steel-concrete wall stiffness of PCSP makes the pipe much stiffer and potentially easier to install, due to the use of native materials and lower compaction requirements, than ordinary steel pipe. This paper presents the set-up and execution of three combined load tests on 60" PCSP. New methods of observing the performance and recording the data for combined load testing were developed, which provided a basis for revision of the pipe design criteria. The results confirmed the efficacy of these tests in confirming the design procedure and criteria.