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Articles 1 - 2 of 2
Full-Text Articles in Civil Engineering
A Comparison Of Risk Assessment Models For Pipe Replacement And Rehabilitation In A Water Distribution System, Lyle John Nemeth
A Comparison Of Risk Assessment Models For Pipe Replacement And Rehabilitation In A Water Distribution System, Lyle John Nemeth
Master's Theses
A water distribution system is composed of thousands of pipes of varying materials, sizes, and ages. These pipes experience physical, environmental, and operational factors that cause deterioration and ultimately lead to their failure. Pipe deterioration results in increased break rates, decreased hydraulic capacity, and adverse effects on water quality. Pipe failures result in economic losses to the governing municipality due to loss of service, cost of pipe repair/replacement, damage incurred due to flooding, and disruptions to normal business operations. Inspecting the entire water distribution system for deterioration is difficult and economically unfeasible; therefore, it benefits municipalities to utilize a risk …
Ncma Groundwater Model Using Usgs Modflow-2005/Pest, Brian Matthew Wallace
Ncma Groundwater Model Using Usgs Modflow-2005/Pest, Brian Matthew Wallace
Master's Theses
A numerical model for the NCMA aquifer complex is presented. The objective of the study is to develop a numerical groundwater model for the NCMA aquifer system to enhance the understanding of subsurface groundwater flow. Infiltration, streamflow, pumping, and return flows are implemented to characterize the aquifer complex over time. The numerical model is calibrated to municipal and monitoring well data, average monthly water balances, and hydraulic contours. Transient aquifer inflows and outflows are assessed in the results of the study and are compared to balance terms from previous studies. The 2007 Todd Engineers Study subsurface inflows and outflows generate …