TermVariableUnitsDescription Gs2.65Specific gravity of particle ρsρs 165.07lb/ft 3 Density of particle ρwρw 62.29lb/ft 3 Density of water g32.20ft/s 2 Acceleration due to gravity T20.00C°Temperature of water T68F°Temperature of water μ2.09E-05lb*s/ft 2 Dynamic viscosity of water at given temp.