SEDIMENT TRANSPORT OVER DEPOSITED BEDS IN SEWERS

This paper is based on an extensive experimental investigation of bedl oad transport of noncohesive sediments at ''limit deposition'' in chan nels of circular and rectangular cross-section. The effect of permanen t deposits on the invert of pipe channels on sediment carrying capacit y and hydraulic resistance to flow is investigated. The sediment trans port data from rectangular and pipe channels led to the development of empirical equations with high correlation coefficients. These equatio ns showed the possibilities of their validity for either channel shape with the incorporation of appropriate shape parameters.