In be in charge of technical economy to compare, water supply should take what
From;    Author:Stand originally
Summary: Application is amounted to on the west, Wei Si Bach (Darcy-Weisbach) is formulary, manning (Manning) formula and Xie Cai (Chezy) is formulary, it is its plinth with the frictional resistance coefficient of conduit, with plastic with key muscle concrete two kinds of conduit are exemple, right " dynamic analysis law " when cost of lowest of plumbing of computational water supply run cost all the year round (** year during whole life, damage value is 0) spread out quantify an analysis. Keyword: Technical economy carries all the year round quite...