Purpose

Hydraulic characteristics for flow at various normal depths

Four cross-sections

  1. Circular

    2. Provide diameter, bottom slope or hyd gradient, manning's n

  2. Rectangular Closed Top

    3. Provide width, height, longitudinal bottom slope or hydraulic gradient, manning's n

  3. Triangular Open Top

    4. Provide height at maximum depth, side slopes, longitudinal bottom slope or hyd gradient, manning's n

  4. Trapezoidal Open Top

    5. Provide height at maximum depth, side slopes, longitudinal bottom slope or hyd gradient, manning's n, bottom width

Results

  1. Froude Number
  2. Flowrate
  3. Velocity
  4. Shear Stress
  5. Top Width

References

  1. Chow, V. T., Applied Hydrology
  2. Hager, W. H., Wastewater Hydraulics, Theory and Practice, 2 ed
  3. Ricketts, et. al, Standard Handbook for Civil Engineers, 5 ed
BS 2017
BS 2020
BS 2022