User:Tdstong

Civil Engineering. PhD, Licensed Professional Engineeer in USA, 46 yrs experience. Latest 15 years as a volunteer for infrastructure in the Developing World. Focus is primarily water supply and wastewater treatment in rural areas. My specialty is design that aims to use natural physical forces (e.g. gravity), biological processes rather than chemicals, use of native skill sets and materials found in the area of a proposed project, and such robustness of design that the function of the project may operate for weeks or months with neglect.