Pipeline is a system of pipes designed to carry fluids such as oil, natural gas, or other petroleum-based products over long distances, often underground. It is a very important part of the modern civilization that has now been used for millennia for the movement of water. Pipelines typically cost more than roads or open channels. It takes years and requires many surveys and studies and plans to be completed to develop a comprehensive plan that addresses the societal, developmental, environmental and safety considerations necessary to build the pipeline. However, they can offer reductions in cost based on shorter and more direct routes than roads or open channels. Construction of pipelines, especially for large scale water-supply or petroleum projects, are large multi-disciplinary activities which involve the investment of large amounts of cash and other resources. This Database was designed to perform Pipeline Cost Estimates, based on generic cost curves for several Activity families types generated using benchmarking techniques. The benchmarked curves give Pipeline Cost as a function of a capacity variable or combination of variables. The cost curves and other information contained in this application can be used to develop the overall process plant capital cost.