Silberman, EdwardDahlin, Warren2011-07-062011-07-061971-04https://hdl.handle.net/11299/108487The St. Anthony Falls Hydraulic Laboratory was engaged by Chamlin and Associates, Inc., of Peru, Illinois, to determine the friction factors for fully developed flow in several sizes of annular and helical corrugated pipes flowing full and to make qualitative observations of the pipe joint characteristics.en-USReport