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Table 6. id. Formulas for Maximum Permissible Velociey Eor Canals <br />• Construceed in Alluvium. <br />1. Mavis, et al. (1937) <br />p <br />(Vb) 2 Dd/9 ps _ 1 <br />D ~ size of particle in millimeters <br />(Vb) ~ Maximum permissible velocity at the bottom, fe/sec <br />pe ~ density oP particle in lb-sect /f t4 <br />p ~ density of water in Lb-sect /f t° <br />2. Carstens 11966) <br />V2 <br />b ~ 3.61 (tang coca - sins) <br />v <br />(p9 - 1) QD <br />a ~ slope of plane bed, English units. <br />~ ~ natural angle of repose <br />3. tteill (1967) <br />2 -0.20 <br />• Vpe1 ~ 2.5 (a) <br />v <br />(oa - t) gD <br />d ~ flow depth, ft <br />Bnglish units. <br />4. Mirtskhulava, T. S. <br />V ~ (l04 8-~) ~_ (7 - 7) D <br />per D O.dd~n a <br />Metric units era required, <br />D> 2mm <br />D <br />n r 0.00005 + O.3D <br />and <br />per ~ Maximum permissible mean velocity in mps <br />• <br />