if a new $10 hydraulic-flow calculator for the iPhone is any indicator, smart-phone apps are fast becoming the new disrupters of traditional software technology.Flo Hydraulic from Appadana, Baltimore, Md., is powerful, flexible and easy to use. Early adopters say it does just about every kind of hydraulic calculation they can think of, potentially overthrowing other widely used tools in the process.According to the App Store, which gave it a “new and noteworthy” billing, the software does 42 different calculations over 10 structure types. Entry screens are backed up by context-sensitive documentation, including formulae and tables, available at the tap of
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.