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Effect of Welding on a High-Density Polyethylene Liner
Publisher: American Society of Civil Engineers
Abstract: This paper describes part of an ongoing research project concerning high-density polyethylene (HDPE) liners used for pipeline rehabilitation. Tests were conducted in the laboratory, where a steel sleeve was welded on the ...
Impacts of Climate Change on Regional Hydrological Regimes in the Spokane River Watershed
Publisher: American Society of Civil Engineers
Abstract: This study develops and implements a methodology to estimate the impacts of global climate change on regional hydrological regimes using ArcGIS Geostatistical Analyst. The model is easily used and can be expanded to different ...
Aerial Assessment of Ephemeral Gully Erosion from Agricultural Regions in the Pacific Northwest
Publisher: American Society of Civil Engineers
Abstract: Soil erosion from agricultural areas continues to be problematic in terms of both financial and environmental measures. Ephemeral gullies contribute to the soil loss both by the volume of sediment eroded from the gullies ...
Buckling Behavior of Polyethylene Liner System
Publisher: American Society of Civil Engineers
Abstract: A lining system for pipeline rehabilitation uses the method of deforming then reforming a conventional polyethylene pipe to allow installation inside an existing pipe. The liner pipe can be structurally designed as a ...
Hydraulic Engineering Education: Evolving to Meet Needs
Publisher: American Society of Civil Engineers
Abstract: Washington State University, by virtue of the presence of the Albrook Hydraulics Laboratory, maintains several courses devoted to hydraulic engineering. The evolution of hydraulics offerings reflects the needs of the day. ...
Buckling of HDPE Liners under External Uniform Pressure
Publisher: American Society of Civil Engineers
Abstract: Lining of underground pipeline networks with deformed/reformed high-density polyethylene (HDPE) liners is a trenchless technique frequently specified for rehabilitation. According to the current design practice, a liner ...
Modeling Flow and Pollutant Removal of Wet Detention Pond Treating Stormwater Runoff
Publisher: American Society of Civil Engineers
Abstract: A mathematical model of pollutant removal by wet ponds was developed based on the mass balance principle and the release–storage equation. The release–storage equation can be linear or nonlinear depending on the wet pond ...
Long-Term Buckling Performance of HDPE Liners
Publisher: American Society of Civil Engineers
Abstract: This research examines the long-term performance of high-density polyethylene liners frequently used in rehabilitating pipeline networks. Buckling of two groups of samples—each consisting of 20 steel pipes lined with HDPE ...
Ecology Ditch: A Best Management Practice for Storm Water Runoff Mitigation
Publisher: American Society of Civil Engineers
Abstract: A full-scale physical model of a modified infiltration trench was constructed to test a new storm water best management practice called an ecology ditch. The ditch was constructed using compost, sand, and gravel, and a ...
Determining Primary Productivity of Lake Roosevelt with <sup>14</sup>C
Publisher: American Society of Civil Engineers
Abstract: During two sampling trips in 1997, primary productivity was measured at 11 stations in Lake Roosevelt using a radioactive carbon tracer capable of determining subtle changes in water quality. Both spatial and temporal ...
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