EngineeringExcelTemplates.com specializes in providing low cost, easy to use spreadsheets for calculations that are tedious to perform by hand, but are not so complicated as to justify the purchase of an entire stand-alone, general-purpose program or to justify the time needed to learn how to use such a program.  With our spreadsheets, if you can type data into a spreadsheet cell, you can quickly get the answer you seek - no need to study tutorials, examples, or Help screens.  There are Excel templates available on the Download page in the following categories: pipe flow calculations, pipe flow measurement, partially full pipe flow, Manning equation/open channel flow, hydrographs/hydrology, activated sludge wastewater treatment, clarifier design, DO sag calculations, storm water management, structural analysis of beams, engineering economics, and convection heat transfer coefficients.  More are being added regularly.