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American formula ashlar asymptotes axis of abscissae axis of ordinates Bewegung des Wassers Canal Canal de Bourgogne Canälen Cast Iron Pipe Channels Lined Coefficient of Rough Creeks cross-section cubic Current meter curves Darcy and Bazin decrease degree of roughness Depth in Feet Descriftion of Channel detritus diagram Dubuat English measure equation Formula Coefficient gravel Greatest Depth Grebenau Humphreys and Abbot Hungary Hydraulic Gradient hyperbola increase of slope intersection irregular Lake Thun Location and Descriftion masonry Mean Hydraulic Radius mean radius Mean Velocity Meiringen Method of Gauging metric measure Mill Race Mississippi River ness observed obtained Open Channels Quoted by Kutter Radius in Feet Rectangular Rhine rivers roughness of wetted Second in Feet Slope of Water small channels straight line Surface per Thousand Surface Width Table Trans Trapezoidal values varies Velocity per Second Water Surface wet perimeter Width in Feet
Page 5 - indicated that the resistance offered by the perimeter of a channel is represented by two values, the first of which is proportional to the velocity and the second to the square of the same. Upon this principle de Prony based his
Page xi - A number of authors have endeavored to establish laws for its variation, and among them Ganguillet and Kutter appear so far to have been the most successful.
Page 4 - that the resistance is independent of the weight or pressure of the water, so that its friction upon the walls of pipes and channels is entirely different in its nature from that existing between solid bodies.
Page 110 - The coefficient of resistance or roughness (») can be found only by consulting cases where analogous physical conditions prevail, and for which its value has already been ascertained.
Page 54 - not only the mere roughness of the surface, but also the irregularities and imperfections (Schadhaftigkeit) in the bed of the channel or river.
Page 4 - summed up in these two laws: 1. The force which sets the water in motion is derived solely from the inclination of the
Page 4 - 2. When the motion is uniform the resistance which the water meets, or the retarding force, is equal to the accelerating force.
Page x - limited to cases where the slope of the water-surface can be ascertained with a degree of accuracy sufficient for the given case.