The course will provide Engineers, and Specifiers with an introduction and basic understanding of the shotcrete process for placing concrete in a wide variety of underground applications. Using the ACI Guide for Specifying Underground Shotcrete (ACI 506.5R-09) as a guidance document, the course touches the process itself, typical underground applications, materials, anchorage and reinforcement, mixture proportioning, performance requirements, QAQC, submittals, preconstruction trials and testing, construction acceptance inspection, batching/mixing and supply, placing equipment, preparation, curing and protection, repair and rehabilitation, safety, and measurement & payment.